Optic fibres and fibre optic sensing

Fibre optic cables with improved performance for use in distributed sensing, for instance in distributed acoustic sensors, are disclosed. In one embodiment a fibre optic cable ( 210 ) comprises a core ( 208 ) and cladding ( 206 ) disposed within a buffer material ( 202 ) and surrounded by a jacket ( 204 ) and arranged so that the core is offset from the centre of the cable. By offsetting the core from the centre of the jacket any bending effects on the core can be maximised compared with the core being located at the centre of the cable.

Optofluidic apparatus, method, and application

A reconfigurable optofluidic apparatus includes a microfluidic chip including a microfluidic channel further including an inlet for a liquid core waveguide fluid; a channel pathway for the liquid core waveguide fluid; a plurality of non-core waveguide fluid inlets; a switching chamber having a larger cross sectional area than the channel pathway; and an outlet for the liquid core waveguide fluid and non-core waveguide fluid, further including a plurality of non-liquid core waveguides disposed in the switching chamber. Light input to the apparatus propagates in the liquid core/liquid cladding (liquid) waveguide. The path of the liquid waveguide can be steered in a region of the apparatus over one of the non-liquid core waveguides such that the light is end-fire- or evanescently-coupled into the non-liquid core waveguide and output therefrom or between two of the non-liquid core waveguides and not coupled or output. Associated optofluidic switching methods are disclosed.

SYSTEMS AND METHODS OF MICROBIAL STERILIZATION USING POLYCHROMATIC LIGHT

The present invention is a device for sterilizing microorganisms on a liquid or solid substrate. The device includes a light source for producing a light and an optical device positioned proximate the light source. The optical device is configured to focus the light generated by the light source to provide a high intensity light output. The optical device also includes a dichroic reflector. The dichroic reflector is configured to pass thermal energy generated by the light source and reflect the light produced by the light source. The device also includes a power supply, where the power supply is coupled to the light source and the optical device. The device thereby killing microbial organisms presented within the range of the high intensity light output. 2. The device according to claim 1 , wherein the light source is polychromatic.3. The device according to claim 1 , wherein the light source includes a high intensity lamp.4. The device according to claim 3 , wherein the light source includes a high intensity HgXe lamp.5. The device according to wherein the light source is a high UV output light source.6. The device according to claim 1 , wherein the light source is activated for a predetermined exposure period just sufficient to kill the microorganism.7. The device according to claim 6 , wherein the exposure period is greater than approximately 0.01 seconds.8. The device according to claim 7 , wherein the exposure period is between approximately 0.01 seconds and approximately 5 seconds.9. The device according to claim 6 , further comprising:a shutter mechanism, wherein the shutter mechanism is positioned and connected proximate to the optical device for controlling the exposure period by modulating the light source.10. The device according to claim 1 , further comprising a fluid-core light guide claim 1 , the fluid-core light guide comprising:a. a first end;b. a second end;c. a tubular body; andd. wherein the light guide is positioned and connected with the first ...

FLOW CELL AND LIQUID CHROMATOGRAPHIC UNIT HAVING SAME

A flow cell and a liquid chromatographic unit are provided. The flow cell includes a housing, a cell core, a liquid-core waveguide, an inlet connection assembly and an outlet connection assembly. The cell core is provided in the housing, and is provided with a liquid feed recess, a liquid channel and a liquid discharge recess therein. The liquid-core waveguide is provided in the liquid channel. The inlet connection assembly is provided at an end of the cell core, and includes an inlet press block, a liquid feed tube, and a light entering tube. The outlet connection assembly is arranged at another end of the cell core and is provided with a light exit hole. 1. A flow cell , comprising:a housing defining an installation cavity;a cell core arranged in the installation cavity and provided with a liquid channel, a liquid feed recess, and a liquid discharge recess therein, wherein the liquid feed recess and the liquid discharge recess are formed at opposite sides of the cell core, and two ends of the liquid channel are respectively connected to the liquid feed recess and the liquid discharge recess;a liquid-core waveguide fitted in the liquid channel and configured to circulate liquid and to propagate light; an inlet press block pressed against an end of the cell core provided with the liquid feed recess;', 'a liquid feed tube penetrating through the inlet press block and in communication with the liquid feed recess; and', 'a light entering tube penetrating through the inlet press block and in communication with the liquid feed recess; and, 'an inlet connection assembly, comprisingan outlet connection assembly pressed against an end of the cell core provided with the liquid discharge recess, wherein the outlet connection assembly is provided with a light exit hole facing towards the liquid discharge recess, in such a manner that light passes through the light entering tube, the liquid feed recess, the liquid-core waveguide, the liquid discharge recess, and the light exit ...

UV LIGHT DISINFECTION AND CLEANING OF NARROW TUBE LUMENS

Systems and methods for cleaning and disinfecting contaminated tube lumens are described herein. One system includes an ultraviolet light source and a sterile fluid reservoir fluidly coupled to a liquid light guide. The system is configured to allow simultaneous access and propagation of ultraviolet light and fluid in a tube having a lumen to be cleaned and disinfected. The light guide can be moved inside the tube and simultaneously emit ultraviolet light through its walls and at its distal end into the interior of the contaminated tube. A flush of sterile fluid from an open end of the liquid light guide removes debris and micro-organism detached from the inner surface during light exposure. The sterile fluid can be a high refractive index ionic solution promoting light propagation. 120-. (canceled)21. An assembly for disinfection of tube lumens , comprising:a first polymer tube with a narrow lumen to be disinfected in a material with a low coefficient of friction;{'sub': P', 'L', 'L', 'P, 'a second partly UV transparent polymer tube open in both ends and with a diameter smaller than the first polymer tube and a with a comparable low coefficient of friction as the first polymer tube which allows the second polymer tube to slide inside the narrow lumen of the first polymer tube and with a refractive index, N, the second polymer tube is filled with a ionic solution with refractive index, N, delivered from a fluid reservoir and where N>N, which allows fluid and light to propagate simultaneously in the second polymer tube and irradiate the lumen of first polymer tube;'}a UV light source in optical communication with the second polymer tube; anda fluid reservoir enabling fluid flow and light propagation comprising a first connector port joined to the light source, and a second connector port joined to the second polymer tube, the light source is in axial position to, and in optical communication with, the second polymer tube via the fluid chamber, the first connector ...

Systems and methods of microbial sterilization using polychromatic light

The present invention is a device for sterilizing microorganisms on a liquid or solid substrate. The device includes a light source for producing a continuous light and an optical device positioned proximate the light source. The optical device is configured to focus the light generated by the light source to provide a continuous high intensity light output. The optical device also includes a dichroic reflector. The dichroic reflector is configured to pass thermal energy generated by the light source and reflect the light produced by the light source. The device also includes a power supply, where the power supply is coupled to the light source and the optical device. The device thereby killing microbial organisms presented within the range of the continuous high intensity light output.

LIQUID CLADDING FOR MULTIPLE CLAD FIBER LASER

A laser system comprising a double clad or multiple clad fiber laser and methods of use are provided. The fiber laser may include a liquid cladding layer, which may be used to facilitate heat exchange. The liquid may be contained in a jacket and may be pumped out of the jacket as part of the heat exchange process. The liquid cladding layer may be used as a wave guide or an anti-wave guide. 1. A laser system comprising:an optical fiber comprising a rare earth doped core, at least one solid cladding layer, a liquid cladding layer which is formed of a liquid and which extends around and is in contact with the at least one solid cladding layer, and a jacket defining an interior chamber which contains the liquid cladding layer.2. The system of wherein the jacket has a jacket inlet and a jacket outlet each in fluid communication with the interior chamber; and the liquid is flowable into the interior chamber through the jacket inlet and flowable out of the interior chamber through the jacket outlet.3. The system of further comprising a feed line connected to the jacket inlet; and a discharge line connected to the jacket outlet.4. The system of further comprising a first closed circulation loop which comprises the interior chamber; and a heat exchanger which is outside the jacket and adjacent the first circulation loop so that heat is transferable from the liquid to the heat exchanger.5. The system of further comprising a second closed circulation loop which extends adjacent the heat exchanger.6. The system of further comprising a flow path which extends adjacent the heat exchanger; and a pump or blower in fluid communication with the flow path.7. The system of wherein the at least one solid cladding layer comprises (a) a first solid cladding layer having a first solid cladding layer internal segment extending inside the jacket and a first solid cladding layer external segment extending outside the jacket and (b) a second solid cladding layer having a second solid cladding ...

OPTICAL DEVICE HAVING LIQUID-CORE OPTICAL FIBRE AND METHOD FOR PRODUCING SUCH A DEVICE

The connection device for liquid-core optical fibre comprises a sleeve traversed by a channel comprising a plurality of communicating stacked conduits, a first conduit being formed from an end of the sleeve and being arranged to receive, in a sealed manner, at the corresponding end of the sleeve, one end of the optical fibre, and a second conduit being formed communicating with the first conduit, and closing means that hermetically seal the end of the second conduit opposite the end that communicates with the first conduit, the sleeve further having a third conduit for filling the internal volume of the second conduit when the latter is closed at one end by the closing device and the fibre is inserted into the first conduit, the third conduit transversely connecting the outside of the sleeve with the inside of the second conduit, and a sealing plug for hermetically sealing the port of the third conduit opening to the outside of the sleeve. 1. An optical device having liquid-core optical fiber , comprising: a sleeve of tubular structure through which a channel comprising a plurality of superposed and communicating ducts passes, a first duct being formed from one end of the sleeve and being arranged to receive hermetically at the corresponding end of the sleeve one end of the optical fiber, and a second duct being formed communicating with the first duct; and', 'closing means hermetically closing that end of the second duct which is opposite the end communicating with the first duct,', 'wherein the sleeve further contains a third duct intended for filling the interior volume of the second duct when the latter is closed at one end by the closing device and the fiber is inserted into the first duct, the third duct connecting transversely the exterior of the sleeve to the interior of the second duct;', 'a hermetic closing cap for hermetically closing the orifice of the third duct opening onto the exterior of the sleeve;', 'a liquid-core optical fiber a first end of which ...

Uv light disinfection and cleaning of narrow tube lumens

Systems and methods for cleaning and disinfecting contaminated tube lumens are described herein. One system includes an ultraviolet light source and a sterile fluid reservoir fluidly coupled to a liquid light guide. The system is configured to allow simultaneous access and propagation of ultraviolet light and fluid in a tube having a lumen to be cleaned and disinfected. The light guide can be moved inside the tube and simultaneously emit ultraviolet light through its walls and at its distal end into the interior of the contaminated tube. A flush of sterile fluid from an open end of the liquid light guide removes debris and micro-organism detached from the inner surface during light exposure. The sterile fluid can be a high refractive index ionic solution promoting light propagation.

Reconfigurable microvalve optical waveguide

An optical waveguide comprises multiple layers of solid-state material disposed on a substrate. One of the layers is a lifting-gate valve made of a high refractive index material. The device provides for better optical confinement in microfluidic channels, and has the capability to integrate both optical signals and fluid sample processing. The optical paths on the chip are reconfigurable because of the use of a movable microvalve that guides light in one of its positions.

DOWNHOLE CABLES WITH BOTH FIBER AND COPPER ELEMENTS

Provided is a method of manufacturing a downhole cable, the method including, forming a helical shape in an outer circumferential surface of a metal tube, the metal tube having a fiber element housed therein, and stranding a copper element in a helical space formed by the metallic tube. Also provided is a downhole cable including, a metallic tube having a helical space in an outer circumferential surface thereof, wherein the metallic tube has a fiber element housed therein, and a copper element disposed in a helical space formed by the steel tube. Double-tube and multi-tube configurations of the downhole cable are also provided. 1. A method of manufacturing a cable , the method comprising:stranding one or more copper elements in a helical space in an outer circumferential surface of a metal tube,wherein the stranding the one or more copper elements in the helical space of the metal tube comprises stranding the one or more copper elements such that respective outer surfaces of the one or more copper elements are in contact with the outer circumferential surface of the metal tube where the helical space is located.2. The method according to claim 1 , wherein the metal tube is a fiber gel filled stainless metal tube.3. The method according to claim 1 , wherein the cable does not have a central element.4. A cable comprising:a metal tube; andone or more copper elements stranded in a helical space in an outer circumferential surface of the metal tube,wherein the one or more copper elements are stranded in the helical space such that respective outer surfaces of the one or more copper elements are in contact with the outer circumferential surface of the metal tube where the helical space is located.5. The cable according to claim 4 , wherein the metal tube is a fiber gel filled stainless metal tube.6. The cable according to claim 4 , wherein the cable does not have a central element. This is a continuation of application Ser. No. 13/918,426, filed Jun. 14, 2013, which is a ...

Downhole Cables with Both Fiber and Copper Elements

Provided is a method of manufacturing a downhole cable, the method including, forming a helical shape in an outer circumferential surface of a metal tube, the metal tube having a fiber element housed therein, and stranding a copper element in a helical space formed by the metallic tube. Also provided is a downhole cable including, a metallic tube having a helical space in an outer circumferential surface thereof, wherein the metallic tube has a fiber element housed therein, and a copper element disposed in a helical space formed by the steel tube. Double-tube and multi-tube configurations of the downhole cable are also provided. 16-. (canceled)7. A downhole cable , comprising:an inner metal tube; anda copper element,wherein a twist diameter of the inner metal tube and copper element is equal to a diameter of the inner metal tube plus a diameter of the copper element.8. The downhole cable of claim 7 , further comprising an outer metal tube surrounding the inner metal tube and the copper element.9. The downhole cable of claim 7 , further comprising a jacket surrounding the inner metal tube and copper element.10. The downhole cable of claim 9 , wherein the jacket is formed from a plastic.11. The downhole cable of claim 8 , wherein the outer metal tube is formed from one of Incoloy 825 or 316 stainless steel.12. The downhole cable of claim 8 , wherein the outer metal tube has a thickness of 0.028 inches claim 8 , 0.035 inches claim 8 , or 0.049 inches.13. The downhole cable of claim 8 , wherein the outer metal tube has a diameter of one-quarter inch.14. The downhole cable of claim 7 , further comprising a fiber element disposed in the inner metal tube.15. The downhole cable of claim 7 , further comprising a gel disposed in the inner metal tube.16. The downhole cable of claim 7 , wherein the inner metal tube is formed from one of stainless steel claim 7 , Incoloy 825 claim 7 , or Inconel 625.17. The downhole cable of claim 7 , wherein the downhole cable does not have a ...

Micro Blood Vessels and Tissue Ducts

A fiber includes one or more layers of polymer surrounding a central lumen, and living animal cells disposed within the lumen and/or within at least one of the one or more layers, wherein the fiber has an outer diameter of between 5 and 8000 microns and wherein each individual layer of polymer has a thickness of between 0.1 and 250 microns. Also disclosed are model tissues including such fibers, and method of making such fibers. The fibers can serve as synthetic blood vessels, ducts, or nerves.

METHOD OF MANUFACTURING A RADIATION-RESISTANT OPTICAL FIBER, RADIATION-RESISTANT OPTICAL FIBER AND DEVICE INCLUDING SUCH A FIBER

A method of manufacturing a radiation-resistant optical fiber and a thus-obtained radiation-resistant optical fiber, the method includes the following steps:

Optic Fibres and Fibre Optic Sensing

Fiber optic cables with improved performance for use in distributed sensing, for instance in distributed acoustic sensors, are disclosed. In one embodiment a fiber optic cable () comprises a core () and cladding () disposed within a buffer material () surrounded by a jacket () and arranged so that the core is offset from the center of the cable. By offsetting the core from the center of the jacket any bending effects on the core can be maximized compared to the core being located at the center of the cable. 137-. (canceled)38. An optical fibre comprising a core , a cladding surrounding the core and a jacket surrounding the cladding further comprising at least one buffer material filling a space between the cladding and jacket wherein the core is offset from the centre of the optical fibre , and wherein the optical fibre is adapted such that it readily flexes in response to an incident acoustic wave.39. An optical fibre as claimed in wherein the core is located to one side of optical fibre.40. An optical fibre as claimed in wherein the centre of the optical fibre does not lie within the core.41. An optical fibre as claimed in wherein the centre of the optical fibre does not lie within the cladding.42. An optical fibre as claimed in comprising more than one buffer material.43. An optical fibre as claimed in wherein at least some of the buffer material is a gel.44. An optical fibre as claimed in comprising a gel buffer disposed in the centre of the optical fibre with the core and cladding to one side of the gel buffer.45. An optical fibre as claimed in wherein the core and cladding are disposed within a gel buffer material.46. An optical fibre as claimed in comprising a solid buffer material in the centre of the optical fibre claim 38 , surrounded by a gel buffer claim 38 , with the core and cladding being disposed in the gel buffer.47. An optical fibre as claimed in wherein the core is a helix along the length of the fibre.48. A fibre optic cable comprising an optical ...

Optically enhanced high resolution image guides

The present disclosure describes optically enhanced high resolution image guides having a high core to cladding area ratio with reduced spectral transmission loss and reduced cross talk while maintaining high resolution and high transmission.

Optically enhanced high resolution image guides

【課題】高解像度および高透過率を維持しながら、減じられた分光透過率損失および減じられたクロストークを伴う、高いコア対クラッディング面積比を有する、光学的に向上させられた高解像度イメージガイドを提供する。【解決手段】光ファイババンドルと、光ファイババンドルを包囲する保護シースと、を備えるイメージガイドであって、光ファイババンドルは、それぞれイメージ入力端部およびイメージ出力端部を有する複数の光ファイバであって、各光ファイバは、コア１およびコアを包囲するクラッディング２を有する複数の光ファイバと、光ファイバのうちの１つまたは複数を物理的に分離させるために光ファイバの間に分散させられた複数の粒子４と、光ファイバの間に配置されたクラッディング延長液体３と、を備える。【選択図】図３Ａ

Ultra-low refractive index high surface area nanoparticulate films and nanoparticles

Nanoparticles having a mean particle size of less than about 25 nanometers and a mean pore size of less than 10 nanometers, and a mean surface area of at least 500 m2/g; nanoporous films of such nanoparticles; and composites and devices containing such nanoparticles and nanoporous films.

Organosilica nanoparticles and method for making

Preparation of Free-Flowing Organosilica Nanoparticles by Forming a solution of an organosilica nanoparticle precursor in a mixed solvent system comprising a first solvent and a second solvent, wherein the first solvent is different from the second solvent, wherein the second solvent has a boiling point which is greater than a boiling point of the first solvent, and wherein the nanoparticle precursor has a greater solubility in the first solvent than in the second solvent; removing at least 50% of the first solvent to form nanoparticles having a mean particle size less than about 25 nanometers dispersed in the solution; adding a coupling agent to the solution to facilitate reacting of the coupling agent with the nanoparticles; and recovering the nanoparticles from the solution, wherein the recovered nanoparticles have the mean particle size of less than about 25 nanometers

Hollow-core fiber based broadband radiation generator with extended fiber lifetime

Disclosed is an optical component for a broadband light source device, the optical component being configured for generating a broadband output upon receiving pump radiation and comprising: a hollow-core photonic crystal fiber (HC-PCF); and a gas mixture filling said HC-PCF, wherein said gas mixture comprises a mixture of at least one first gas configured for the generation of the broadband radiation and at least one second gas comprising or consisting of Helium.

Hollow-core fiber based broadband radiation generator with extended fiber lifetime

Disclosed is an optical component for a broadband light source device, the optical component being configured for generating a broadband output upon receiving pump radiation and comprising: a hollow-core photonic crystal fiber (HC-PCF); and a gas mixture filling said HC-PCF, wherein said gas mixture comprises a mixture of at least one first gas configured for the generation of the broadband radiation and at least one second gas comprising or consisting of Helium.

Oxygen sensor for internal monitoring of tissue oxygen in vivo

The present invention provides a probe device for detecting and measuring CO 2 directly in tissue of a patient, the probe comprising: a sensor chamber enclosed within a biocompatible, gas-permeable layer; and contained therein a CO 2 sensor solution comprising a fluorescence emitting compound (fluorophor).

Gas sensor including a fibre optic connector

FIELD: testing. SUBSTANCE: area of application: gas analysis. The substance of the invention consists in the fact that the gas analyser sensor unit comprises a first sensor conductor constituting a fibre optic cable with a solid core, provided with a terminal end; a second sensor conductor constituting a fibre optic cable with a hollow core, provided with an end section, wherein the fibre optic cable with a hollow core has a hollow inner part; and a connecting element containing a weld joint connecting the terminal end of the first sensor conductor with the end section of the second sensor conductor, wherein the connecting element includes a hole fluidly connected with the hollow inner part, and is gas-permeable. EFFECT: provided possibility of creating a structurally simple gas sensor and using said sensor on large distances. 11 cl, 7 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 764 063 C1 (51) МПК G01N 21/84 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК G01N 21/84 (2021.08) (21)(22) Заявка: 2020136968, 30.04.2019 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): БЕЙКЕР ХЬЮЗ ХОЛДИНГЗ ЛЛК (US) Дата регистрации: 13.01.2022 01.05.2018 US 62/665,218 (45) Опубликовано: 13.01.2022 Бюл. № 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 11.11.2020 (86) Заявка PCT: 2 7 6 4 0 6 3 R U (87) Публикация заявки PCT: WO 2019/213081 (07.11.2019) Адрес для переписки: 105082, Москва, Спартаковский пер., 2, стр. 1, секция 1, этаж 3, "ЕВРОМАРКПАТ", Веселицкий Максим Борисович (54) ДАТЧИК ГАЗА, ВКЛЮЧАЮЩИЙ В СЕБЯ ОПТОВОЛОКОННЫЙ СОЕДИНИТЕЛЬ (57) Реферат: Использование: для анализа газа. Сущность соединение, соединяющее терминальный конец изобретения заключается в том, что узел датчика первого проводника датчика с концевой секцией газоанализатора содержит первый проводник второго проводника датчика, причем датчика, представляющий собой оптоволоконный соединительный элемент включает в ...

Sunlight simulator apparatus

Sunlight simulators that have optical homogenizer units that provide adjustably positionable beams of radiation, each within a selected portion of the spectrum of wave lengths of radiation emitted from a light source, that have uniform output intensity profiles measured across the ends of the optical homogenizer units. These sunlight simulators include either liquid light guides or fiber optic light guides that conduct the beams of radiation, developed from the light source, to the optical homogenizer units. Dosage regulating means control the doses of radiation provided by the optical homogenizer units.

Light irradiation device for fluorescent imaging device without speckle

본 발명은 형광 영상장치용 광조사장치에 관한 것으로서, 광원의 빛을 광섬유로 광조사장치에 전달하는 형광 영상장치용 광조사장치에 있어서, 액체 코어 광섬유를 광원전달용 광섬유로 사용하여, 광조사장치에 스펙클(speckle)이 없는 광원을 전달시키는 것을 특징으로 한다. 본 발명에 의하여, 형상영상장치의 획득 영상 품질에 영향을 끼치는 광원을 스펙클 현상없이 전달하는 '형광 영상장치용 광조사장치'가 제공되는 이점이 있다.

METHOD FOR CONNECTING OPTICAL FIBER AND CONNECTOR FOR OPTICAL FIBER

Le dispositif de connexion pour fibre optique à cœur liquide comporte un manchon traversé par un canal comprenant une pluralité de conduits superposés en communication, un premier conduit étant formé à partir d'une extrémité du manchon et étant agencé pour recevoir de façon hermétique à l'extrémité correspondante du manchon une extrémité de la fibre optique, et un deuxième conduit étant formé communicant avec le premier conduit, et des moyens de fermeture fermant hermétiquement l'extrémité du deuxième conduit opposée à celle communiquant avec le premier conduit, le manchon présentant en outre un troisième conduit destiné au remplissage du volume intérieur du deuxième conduit lorsque celui-ci est fermé à une extrémité par le dispositif de fermeture et que la fibre est insérée dans le premier conduit, le troisième conduit reliant transversalement l'extérieur du manchon à l'intérieur du deuxième conduit, et un bouchon de fermeture hermétique pour fermer hermétiquement l'orifice du troisième conduit débouchant sur l'extérieur du manchon. The liquid-core optical fiber connection device comprises a channel-through sleeve comprising a plurality of superposed conduits in communication, a first conduit being formed from one end of the sleeve and being arranged to hermetically receive the corresponding end of the sleeve one end of the optical fiber, and a second conduit being formed communicating with the first conduit, and closure means sealingly closing the end of the second conduit opposite to that communicating with the first conduit, the sleeve further having a third conduit for filling the inner volume of the second conduit when the latter is closed at one end by the closure device and the fiber is inserted into the first conduit, the third conduit connecting transversely the outside of the sleeve to the inside the second duct, and a sealing cap in. to hermetically close the orifice of the third conduit opening on the outside of the sleeve.

Ultra-low refractive index high surface area nanoparticulate films and nanoparticles

Nanoparticles having a mean particle size of less than about 25 nanometers and a mean pore size of less than 10 nanometers, and a mean surface area of at least 500 m2/g; nanoporous films of such nanoparticles; and composites and devices containing such nanoparticles and nanoporous films.

MATERIAL ABLATION DEVICE, PARTICULARLY FOR DENTISTRY.

Dispositif d'ablation de matière, notamment une pièce à main (1) pour la dentisterie, comprenant des moyens optiques (6, 16, 22, 32) pour la propagation et le guidage jusqu'à une surface de travail d'un faisceau de lumière cohérente (10), ainsi que des moyens de canalisation (24, 30) pour amener un fluide sous pression jusqu'à la tête de travail (5) du dispositif et une buse (20) située dans ladite tête de travail en aval desdits moyens de canalisation et communiquant avec ces derniers pour former un jet (32) de fluide liquide. Le dispositif est caractérisé en ce qu'il comprend une chambre (30) de détente en amont de ladite buse (20) et en ce que l'axe optique (18) du faisceau de lumière cohérente (10) est aligné sur l'axe central du canal de la buse (20), ledit jet (32) de fluide liquide servant de guide d'onde entre ladite tête de travail (5) et la surface de travail.

OPTICAL FIBER COUPLER WITH A MAIN FIBER WITH A LIQUID HEART, KIT AND COUPLING METHOD USING SUCH A COUPLER

Waveguide cell with enhanced numerical aperture

A waveguide cell (60) is described, the waveguide cell (60) comprising a capillary tubing (61) enclosing a cell volume of the waveguide cell (60), the capillary tubing (61) having a first end and a second end opposite to the first end, a fluid inlet located at the first end of the capillary tubing, a fluid outlet located at the second end of the capillary tubing, a first optical fiber (62) located at the first end of the capillary tubing, the first optical fiber being configured for coupling light into the cell volume of the waveguide cell, the first optical fiber being implemented as a first tapered optical fiber, and a second optical fiber (63) located at the second end of the capillary tubing, the second optical fiber being configured for uncoupling light from the cell volume of the waveguide cell, the second optical fiber being implemented as a second tapered optical fiber.

Micro blood vessels and tissue ducts

A fiber includes one or more layers of polymer surrounding a central lumen, and living animal cells disposed within the lumen and/or within at least one of the one or more layers, wherein the fiber has an outer diameter of between 5 and 8000 microns and wherein each individual layer of polymer has a thickness of between 0.1 and 250 microns. Also disclosed are model tissues including such fibers, and method of making such fibers. The fibers can serve as synthetic blood vessels, ducts, or nerves.

Gas sensor including optic fiber connector

Borehole cables with fibre-optic and copper elements

FIELD: physics. SUBSTANCE: outer peripheral surface of a metal tube housing a fibre-optic element is given a helical shape, and a copper element is twisted in the helical region formed by the metal tube. The borehole cable comprises a metal tube, the outer peripheral surface of which has a helical shape and in which there is a fibre-optic element, and a copper element twisted in the helical region formed by the metal tube. The invention also discloses a double-tube and a multiple-tube configuration of a borehole cable. EFFECT: smaller diameter of the cable and wider range of stress at which deformations occur. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 445 656 (13) C2 (51) МПК G02B 6/44 (2006.01) H01B 11/22 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2008146784/28, 29.08.2007 (24) Дата начала отсчета срока действия патента: 29.08.2007 (73) Патентообладатель(и): АФЛ ТЕЛЕКОМЬЮНИКЕЙШНС ЛЛС (US) R U Приоритет(ы): (30) Конвенционный приоритет: 30.08.2006 US 60/823,959 (72) Автор(ы): ХЕРБСТ Брайан Г. (US) (43) Дата публикации заявки: 10.06.2010 Бюл. № 16 2 4 4 5 6 5 6 (45) Опубликовано: 20.03.2012 Бюл. № 8 (56) Список документов, цитированных в отчете о поиске: JP 2001311859 А, 09.11.2001. JP 2244013 А, 28.09.1990. US 5493626 А, 20.02.1996. US 2002071644 A1, 13.06.2002. US 4575184 A, 11.03.1986. 2 4 4 5 6 5 6 R U (86) Заявка PCT: US 2007/018926 (29.08.2007) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 26.11.2008 (87) Публикация заявки РСТ: WO 2008/027387 (06.03.2008) Адрес для переписки: 190000, Санкт-Петербург, ООО "ПерфектАссистант", ВОХ-сервис 1125, пат. пов. М.И. Ниловой, рег. № 378 (54) СКВАЖИННЫЕ КАБЕЛИ С ОПТОВОЛОКОННЫМИ И МЕДНЫМИ ЭЛЕМЕНТАМИ (57) Реферат: Изобретение относится к комбинированным скважинным кабелям. Согласно способу изготовления скважинного кабеля придают спиралевидную форму внешней периферической поверхности металлической трубки, в которой расположен ...

Optic fibres and fibre optic sensing

Fibre optic cables with improved performance for use in distributed sensing, for instance in distributed acoustic sensors, are disclosed. In one embodiment a fibre optic cable (210) comprises a core (208) and cladding (206) disposed within a buffer material (202) and surrounded by a jacket (204) and arranged so that the core is offset from the centre of the cable. By offsetting the core from the centre of the jacket any bending effects on the core can be maximised compared with the core being located at the centre of the cable.

Light guiding fluid conduit having inner and outer capillaries

A fluid conduit is described, the fluid conduit comprising an inner capillary adapted for conducting a fluid, and an outer capillary circumferentially enclosing the inner capillary. The outer capillary's inner diameter is larger than the inner capillary's outer diameter, with an interspace being formed between the inner capillary's outer surface and the outer capillary's inner surface. The inner capillary is further adapted for guiding light coupled into the inner capillary. Dependent on the light's angle of incidence, total reflection occurs at a boundary between the inner capillary's outer surface and the interspace between the inner capillary and the outer capillary.

A method of connecting a solid-state optical fiber to another optical fiber and solid-state optical fiber to a jointing device

Verfahren zum Verbinden einer optischen Festkernfaser (2) mit einer weiteren optischen Faser (20), umfassend die Schritte: – Ausbilden einer Fügungsvorrichtung (10) auf einem axialen Ende der optischen Festkernfaser (2) mit Hilfe eines 3D-Druckers, wobei das Ausbilden der Fügungsvorrichtung (10) ein Ausbilden eines Basiselements (4) auf dem axialen Ende der optischen Festkernfaser und ein Ausbilden eines an das Basiselement (4) angeordneten Verbindungselements (6) zur Aufnahme eines axialen Endes der weiteren optischen Faser (20) und zur Ausrichtung der weiteren optischen Faser (20) an die optische Festkernfaser (2) umfasst; und – Verbinden der weiteren optischen Faser (20) mit der optischen Festkernfaser (2) durch Einführen des axialen Endes der weiteren optischen Faser (20) in die Fügungsvorrichtung (10). A method of joining a solid-state optical fiber (2) to another optical fiber (20), comprising the steps of: - forming a jointing device (10) on an axial end of the solid-core optical fiber (2) by means of a 3D printer, the forming of A joining device (10) forming a base member (4) on the axial end of the solid-core optical fiber and forming a connecting member (6) disposed on the base member (4) for receiving one axial end of the another optical fiber (20) and aligning the other optical fiber (20) to the solid-state optical fiber (2); and - connecting the further optical fiber (20) to the solid-core optical fiber (2) by inserting the axial end of the further optical fiber (20) into the jointing device (10).

Method and system for coupling light through challenging media

An optical path can be created through optically challenging media. Light can transmit over the optical path between an end of an optical waveguide and a point displaced from the end. A fluid that scatters or absorbs light, generates interference, or otherwise poses optical challenges can be disposed between the waveguide end and the point. The optically challenging fluid can comprise blood, turbid and/or opaque fluid, absorbing liquids, or other liquid or fluid presenting transmission issues, for example. An optical path can be formed between the end and the point to facilitate transmitting light through the optically challenging fluid. In certain examples, the optical path can comprise a waveguide formed of fluids emitted into the optically challenging fluid, a gas injected into the optically challenging fluid, or an expandable structure, such as a balloon filled with substantially transparent liquid or gas.

Hollow core fiber light source and method for manufacturing hollow core fiber

披露了一种处理中空芯部光纤的输出耦合端的方法，所述中空芯部光纤包括围绕中空芯部的多个反谐振元件，以及已经被如此处理的中空芯部光纤。所述方法包括：执行锥形化步骤，以在所述反谐振元件中形成锥形部；在所述锥形部处执行切开步骤，以形成所述中空芯部光纤的至少一个锥形化输出耦合端；以及执行端部处理步骤，所述端部处理步骤包括以受控方式进一步加热所述输出耦合端，以平滑所述输出耦合端。

fiber optic, fiber optic cable, and, distributed acoustic fiber optic sensor

fibra óptica , cabo de fibra óptica, sensor de fibra óptica acústica dsitribuído , uso de uma fibra óptica , sensor de fibra distribuído , e, de um cabo de fibra óptica. são revelados cabos ópticos de fibra com melhor desempenho para uso em detecção distribuída , por exemplo , em sensores acústicos distribuídos. em uma modalidade, um cabo de fibra óptica (210) compreende um núcleo (208) e revestimento (206) dispostos dentro de um material de amortecimento (202) e envoltos por uma camisa (204) e arranjados de forma que o núcleo fique deslocado do centro do cabo. pelo deslocamento do núcleo do centro da camisa , qualquer efeito de dobramento no núcleo pode ser maximizado, comparado com quando o núcleo é localizado no centro do cabo. fiber optics, fiber optic cable, distributed acoustic fiber optic sensor, use of an optical fiber, distributed fiber sensor, and a fiber optic cable. optical fiber cables with better performance are revealed for use in distributed detection, for example, in distributed acoustic sensors. in one embodiment, a fiber optic cable (210) comprises a core (208) and sheath (206) arranged within a cushioning material (202) and encased by a jacket (204) and arranged so that the core is displaced from the center of the cable. by displacing the core from the center of the jacket, any folding effect on the core can be maximized, compared to when the core is located in the center of the cable.

Optical waveguide and method for manufacturing optical waveguide

本発明は、１８０ｎｍより大きい波長を有する、誘導される光学的光ビーム１００を透過させる、光導波路１に関する。導波路１は、第１の屈折率ｎ１を有する第１の材料でできた、光１００を誘導するためのコア層１０と、熱可塑性エラストマーＴＰＥでできたクラッド層２０とを備える。本発明はまた、本発明の光導波路１を備える、医療デバイス及び導波路センサにも関する。本発明はさらに、光導波路１の製造方法にも関する。該方法は、プリフォーム２００を所定の長さ及び横方向寸法まで小さくし、伸長する前又は後に、液体ポリマー１１を導入するための、中央の長手方向の開口部を有する、熱可塑性エラストマーのプリフォーム２００を準備するステップを含む。該方法は、形成された光導波路１のコアを、重合するステップを含む。本発明はまた、外科用器具に関連する光導波路の使用法にも関する。

optical fiber, fiber optic cable, distributed acoustic fiber optic sensor, use of an optical fiber, distributed fiber sensor, and an optical fiber cable.

fibra óptica , cabo de fibra óptica, sensor de fibra óptica acústica dsitribuído , uso de uma fibra óptica , sensor de fibra distribuído , e, de um cabo de fibra óptica. são revelados cabos ópticos de fibra com melhor desempenho para uso em detecção distribuída , por exemplo , em sensores acústicos distribuídos. em uma modalidade, um cabo de fibra óptica (210) compreende um núcleo (208) e revestimento (206) dispostos dentro de um material de amortecimento (202) e envoltos por uma camisa (204) e arranjados de forma que o núcleo fique deslocado do centro do cabo. pelo deslocamento do núcleo do centro da camisa , qualquer efeito de dobramento no núcleo pode ser maximizado, comparado com quando o núcleo é localizado no centro do cabo. optical fiber, fiber optic cable, distributed acoustic fiber optic sensor, use of an optical fiber, distributed fiber sensor, and an optical fiber cable. better performing fiber optic cables are disclosed for use in distributed detection, for example in distributed acoustic sensors. In one embodiment, a fiber optic cable (210) comprises a core (208) and sheath (206) disposed within a damping material (202) and encased by a jacket (204) and arranged such that the core is displaced. from the center of the cable. By shifting the core from the center of the jacket, any bending effect on the core can be maximized compared to when the core is located at the center of the cable.

An optical detector device

Method for the optical analysis of a fluid

The invention concerns a method for the optical analysis of a fluid, in which the fluid that has a first refractive index, is surrounded by an auxiliary fluid with a second refractive index, the first refractive index being larger than the second refractive index and light being sent through the fluid. It is endeavoured to obtain an encapsulation of the fluid in the auxiliary fluid at low cost. For this purpose, firstly the auxiliary fluid is led into a measuring channel, until it is filled, and then lead the fluid into the auxiliary fluid within the cross section with a flow speed, which generates a parabolic flow profile.

Optical waveguide with enscapsulated liquid upper cladding

An optical device includes a planar substrate (10) on top of which is deposited a layer of waveguide material (13). A waveguide circuit (11, 12) is etched into the waveguide material (13). A cover (40) selectively encapsulates the substrate (10) around the waveguide circuit while leaving space to provide a gap above the waveguide circuit (404). A liquid material (30) having a lower index of refraction than the waveguide material is filled into the gap above the waveguide circuit such that the liquid acts as the upper cladding for the waveguide circuit. The cover may be in the form of a substrate on which are formed optical modifying elements (22) for modifying light signals propagating in the waveguide circuit.

Device for ablation of material, particularly used in dentistry

Device for ablation of material, particularly a handpiece (1) used in dentistry, comprising optical means (6, 16, 22, 32) for the propagation and guiding upto a working surface of a coherent light beam (10), as well as channelling means (24, 30) for conveying a pressurised fluid to the working head (5) of the device and a nozzle (20) situated in the said working head downstream of the said channelling means and connected to the latter in order to form a jet (32) of liquid fluid. The device is characterised in that it comprises a pressure-reduction chamber (30) upstream of the said nozzle (20) and in that the optical axis (18) of the coherent light beam (10) is aligned on the central axis of the channel of the nozzle (20), the said jet (32) of liquid fluid being used as a waveguide between the said working head (5) and the working surface. <IMAGE>

Optic fibres and fibre optic sensing

Fibre optic cables with improved performance for use in distributed sensing, for instance in distributed acoustic sensors, are disclosed. In one embodiment a fibre optic cable (210) comprises a core (208) and cladding (206) disposed within a buffer material (202) and surrounded by a jacket (204) and arranged so that the core is offset from the centre of the cable. By offsetting the core from the centre of the jacket any bending effects on the core can be maximised compared with the core being located at the centre of the cable.

Improvements in and relating to optical fibres

Method for manufacturing a radiation-resistant optical fibre, radiation-resistant optical fibre and device comprising such a fibre

Uv light disinfection and cleaning of narrow tube lumens

High efficiency optical detection of biomolecules in micro-capillaries

Disclosed herein are systems, methods, and techniques for optical detection of analytes (e.g., biomarkers or other objects) using a liquid-core waveguide in which the analytes are suspended in a high-index liquid inside a liquid channel of the waveguide. The term “high-index” may indicate a refractive core index of the carrier liquid that is higher than or equal to that of one or more surrounding cladding layer(s) (e.g., ethylene glycol liquid inside a glass channel). In some embodiments, a method includes illuminating, by a light-source, one or more particles in a liquid-core waveguide, wherein the liquid-core waveguide comprises a first cladding layer having a first index of a refraction, and a hollow core comprising a liquid inside the hollow core, wherein the liquid has a second index of refraction higher than the first index of refraction; and detecting, by a detector, light emitted from the one or more particles.

Micro blood vessels and tissue ducts

A fiber includes one or more layers of polymer surrounding a central lumen, and living animal cells disposed within the lumen and/or within at least one of the one or more layers, wherein the fiber has an outer diameter of between 5 and 8000 microns and wherein each individual layer of polymer has a thickness of between 0.1 and 250 microns. Also disclosed are model tissues including such fibers, and method of making such fibers. The fibers can serve as synthetic blood vessels, ducts, or nerves.

Uv light disinfection and cleaning of narrow tube lumens

Systems and methods for cleaning and disinfecting contaminated tube lumens are described herein. One system includes an ultraviolet light source and a sterile fluid reservoir fluidly coupled to a liquid light guide. The system is configured to allow simultaneous access and propagation of ultraviolet light and fluid in a tube having a lumen to be cleaned and disinfected. The light guide can be moved inside the tube and simultaneously emit ultraviolet light through its walls and at its distal end into the interior of the contaminated tube. A flush of sterile fluid from an open end of the liquid light guide removes debris and micro-organism detached from the inner surface during light exposure. The sterile fluid can be a high refractive index ionic solution promoting light propagation.

Downhole cables with both fiber and copper elements

Provided is a method of manufacturing a downhole cable, the method including, forming a helical shape in an outer circumferential surface of a metal tube, the metal tube having a fiber element housed therein, and stranding a copper element in a helical space formed by the metallic tube. Also provided is a downhole cable including, a metallic tube having a helical space in an outer circumferential surface thereof, wherein the metallic tube has a fiber element housed therein, and a copper element disposed in a helical space formed by the steel tube. Double-tube and multi-tube configurations of the downhole cable are also provided.

Sunlight simulator apparatus

Sunlight simulators that have optical homogenizer units that provide adjustably positionable beams of radiation, each within a selected portion of the spectrum of wave lengths of radiation emitted from a light source, that have uniform output intensity profiles measured across the ends of the optical homogenizer units. These sunlight simulators include either liquid light guides or fiber optic light guides that conduct the beams of radiation, developed from the light source, to the optical homogenizer units. Dosage regulating means control the doses of radiation provided by the optical homogenizer units.

Apparatus for removing unwanted light from high-power optical systems

Hollow conductor for light - has tube with reflective inner surface and hollow outer with heat carrying fluid gap between

The light conductor (1) consists basically of a tube with a reflecting inner face. The outer face is double walled and hollow to carry a heat carrying fluid. The conductor is made by assembling several tubes (2) connected by flexible joints (3). There can be a triple cover of flexible material, the inner having a reflecting covering and the outer two forming the space (4) for fluid. The fluid circuit includes a pump (5) and heat exchanger (6). The light source (S) is at the top and the output (R) at the bottom.

METHOD FOR MANUFACTURING A RADIATION-RESISTANT OPTICAL FIBER, RADIATION-RESISTANT OPTICAL FIBER, AND DEVICE COMPRISING SUCH A FIBER

Temperature-controlled switch effect connection type liquid core anti-resonance optical fiber and application thereof

一种温控开关效应的联结型液芯反谐振光纤及其应用，属于光学与激光技术领域。该温控开关效应的联结型液芯反谐振光纤，为双层联结型反谐振结构，其在外包层内侧周向均布的6对‑10对的中心对称联结孔，不包括7对；外层反谐振孔半径>内层反谐振孔半径；在联结管内管形成的内层反谐振孔中，选择3个孔以上填充易产生SPR效应的物质；液芯受温度影响的折射率变化范围包含光纤材质的折射率。该温控开关效应的联结型液芯反谐振光纤相比于传统的光开关，其结构更为简单，体积更小，且可以根据不同材质来设计开关温度，能够实现在设计中的设定温度产生开关效应，对于光学元件开发具有非常重要的意义。

Light source unit

A light source unit using a liquid core fiber as a light guide, by which the liquid core fiber is inhibited from being overheated, and a light source unit by which an infrared cut filter having a multi-layer reflection film prevents infrared rays from being introduced into a liquid core fiber, and its miniaturization can be made without causing problems in use.

Liquid sapphire optical fiber cladding and preparation method thereof

本发明公开了一种液体蓝宝石光纤包层及其制备方法，该液体蓝宝石光纤包层，包括蓝宝石光纤、包层液体和毛细玻璃管，毛细玻璃管同轴环设于蓝宝石光纤外部，毛细玻璃管与蓝宝石光纤包围形成的密闭空间内填充有包层液体；包层液体的折射率小于蓝宝石光纤，且折射率为1.60～1.71。本发明通过引入包层液体填充于毛细玻璃管与蓝宝石光纤之间，替代现有的固体包层方式，避免高温环境下膨胀系数不匹配而造成的包层开裂情况，并且能有效保护蓝宝石光纤，避免其在高温过程中的损伤，降低其光传输损耗。

Light guide

METHOD FOR MANUFACTURING A RADIATION-RESISTANT OPTICAL FIBER, RADIATION-RESISTANT OPTICAL FIBER, AND DEVICE COMPRISING SUCH A FIBER

L'invention concerne un procédé de fabrication d'une fibre optique résistante aux radiations et une fibre optique résistante aux radiations ainsi obtenue. Selon l'invention, le procédé comporte les étapes suivantes : a) Fabrication d'une préforme de fibre optique de silice ; b) Formation dans la préforme d'une cavité longitudinale ; c) Fibrage de ladite préforme de manière à former une fibre optique (1) comprenant un cœur (2), une gaine optique (6) et au moins une cavité longitudinale (3) ayant au moins une ouverture (13) à une extrémité de la fibre optique (1) ; d) Application, pendant l'étape c) de fibrage, d'un revêtement hermétique au gaz (4) ; e) Exposition de la fibre optique (1) à une substance gazeuse, comprenant de préférence de l'hydrogène gazeux et/ou du deutérium gazeux, de manière à incorporer ladite substance gazeuse dans la silice via ladite ouverture (13) ; f) Fermeture de toute ouverture (13) aux deux extrémités de la fibre optique (1). The invention relates to a method of manufacturing a radiation-resistant optical fiber and a radiation-resistant optical fiber thus obtained. According to the invention, the method comprises the following steps: a) Fabrication of a silica optical fiber preform; b) Formation in the preform of a longitudinal cavity; c) Fibering of said preform so as to form an optical fiber (1) comprising a core (2), an optical cladding (6) and at least one longitudinal cavity (3) having at least one opening (13) at one end of the optical fiber (1); d) applying, during step c) fiber drawing, a gas-tight coating (4); e) exposing the optical fiber (1) to a gaseous substance, preferably comprising hydrogen gas and / or deuterium gas, so as to incorporate said gaseous substance in the silica via said opening (13); f) Closing any opening (13) at both ends of the optical fiber (1).

Optical waveguide and method of fabrication thereof

The present invention relates to an optical waveguide (1), for transmitting a guided optical light beam (100) having a wavelength greater than 180nm. The waveguide (1) comprises at least one core (10) for guiding light (100) made of a first material having a first index of refraction (n1), and a cladding (20) made at least partially of a thermoplastic elastomer (TPE), the innermost layer of the cladding (20) having a refractive index (n2) smaller than the refractive index (n1) of the outermost layer of the core (10). The invention relates also to a medical device and also to waveguide sensors comprising the optical waveguide (1) of the invention. The invention also relates further to a method of fabrication of the optical waveguide (1). The method is based on the realisation of a full thermoplastic elastomer preform (200) or a preform (204) having a central aperture (202'). Before or after elongating said preform (200, 204) to a predetermined length and a predetermined lateral dimension, the core of the preform is filled and hardened so as to provide an optical waveguide (1) of the invention. The invention relates also to a 3D printing method to realize the preform (200, 204).

Downhole cables with both fiber and copper elements

Provided is a method of manufacturing a downhole cable, the method including, forming a helical shape in an outer circumferential surface of a metal tube, the metal tube having a fiber element housed therein, and stranding a copper element in a helical space formed by the metallic tube. Also provided is a downhole cable including, a metallic tube having a helical space in an outer circumferential surface thereof, wherein the metallic tube has a fiber element housed therein, and a copper element disposed in a helical space formed by the steel tube. Double-tube and multi-tube configurations of the downhole cable are also provided.

Guided mode resonator based Raman enhancement apparatus

A system for performing Raman spectroscopy comprises a waveguide layer configured with at least one array of features, the at least one array of features being configured to provide guided-mode resonance for at least one wavelength of electromagnetic radiation; and at least one fluid channel disposed in the waveguide layer. An analyte sensor comprises an electromagnetic radiation source configured to emit a range of wavelengths of electromagnetic radiation, the system for performing Raman spectroscopy, and at least one photodetector configured to detect Raman scattered light.

Downhole cables with both fiber and copper elements

Light source unit

A light source unit is equipped with a light source having a discharge lamp and a converging mirror, and a light guide formed of a liquid core fiber which is held by a light guide holding portion. The light source and the light guide are held in a casing made of a metal, and an infrared cut filter is provided in a cylindrical light shielding body surrounding an optical path in the interior of the casing. The light shielding body forms a stray light preventing member which prevents stray light from going out of the casing, and a light quantity adjusting member is provided between an opening of the light shielding body on a light guide side and a light incident port of the light guide. The light shielding body and the light guide holding portion are thermally insulated from each other by a heat insulating material portion.

Method of manufacturing a radiation-resistant optical fiber, radiation-resistant optical fiber and device including such a fiber

A method of manufacturing a radiation-resistant optical fiber and a thus-obtained radiation-resistant optical fiber, the method includes the following steps: a) manufacturing a silica optical fiber preform; b) forming, in the preform, a longitudinal cavity; c) drawing the preform so as to form an optical fiber ( 1 ) including a core ( 2 ), an optical cladding ( 6 ) and at least one longitudinal cavity ( 3 ) having at least one opening ( 13 ) at one end of the optical fiber ( 1 ); d) applying, during step c) of fiber drawing, a gas-tight coating ( 4 ); e) exposing the optical fiber ( 1 ) to a gaseous substance, including preferably gaseous hydrogen and/or gaseous deuterium, in such a way to incorporate the gaseous substance in silica via the opening ( 13 ); and f) closing any opening ( 13 ) at both ends of the optical fiber.

Communication cables

1453401 Light guides PIRELLI GENERAL CABLE WORKS Ltd 20 March 1975 [20 March 1974] 12466/74 Heading G2J A communications cable 1 or 1a (e.g. as described in Specification 1453402) comprises a plurality of optical fibres 2, 2a each having a liquid core, a pair of caps (not shown) sealing opposite ends of the cable and having respective chambers with which the opposite ends of the optical fibres communicate, and a quantity of the same liquid as the cores filling the chambers under pressure. In the arrangement shown, the end of cable 1 is provided with sockets formed by capillary tubes 9 into which the fibres 2 extend halfway and are secured by resin 11. The fibres 2a of cable 1a extend from capillary tubes 9a, however, so that to join cables 1, 1a together, the end caps (not shown) are removed from each cable, the ends of fibres 2a are inserted into the capillary tube sockets 9 and the jointing zone is enclosed e.g. by sleeves 17, 18. During the joining, core liquid is pumped through the optical fibre cores from the remote ends of the cables.

Light guide

Aperturwandler, lighting device for an optical observation device and coupling device for coupling light from a light source in the inlet end of a light guide

Ein erfindungsgemäßer Aperturwandler zeichnet sich aus durch seine Ausgestaltung, derart, dass Lichtstrahlen eines durch den Aperturwandler hindurchtretenden Strahlenbündels (50) statistisch um Winkel (THETA) aus einem definierten Winkelbereich aus ihrer ursprünglichen Richtung abgelenkt werden. An aperture converter according to the invention is distinguished by its design such that light beams of a beam (50) passing through the aperture converter are deflected statistically by angles (THETA) from a defined angular range from their original direction.

Apparatus for optical measurements on low-index non-solid materials based on arrow waveguides

An optical waveguide is constructed so as to comprise a non-solid core layer (core) surrounded by solid-state material (SiO2). The non-solid core layer has an index of refraction which is lower than the index of refraction of the surrounding solid-state material, and light can be transmitted with low loss through the non-solid core layer. In an exemplary application, the non-solid core layer comprises a sample material (fluid) whose light transmission, absorbtion, and/or interference characteristics are to be measured.

Optical component and light-guiding system

An optical component has: a planar liquid layer; and one or more light sources arranged such that light is guided to the planar liquid layer; wherein the liquid layer is configured to guide light.

Optical waveguide and method of fabrication thereof

The present invention relates to an optical waveguide (1), for transmitting a guided optical light beam (100) having a wavelength greater than 180nm. The waveguide (1) comprises at least one core (10) for guiding light (100) made of a first material having a first index of refraction (n1), and a cladding (20) made at least partially of a thermoplastic elastomer (TPE), the innermost layer of the cladding (20) having a refractive index (n2) smaller than the refractive index (n1) of the outermost layer of the core (10). The invention relates also to a medical device and also to waveguide sensors comprising the optical waveguide (1) of the invention. The invention also relates further to a method of fabrication of the optical waveguide (1). The method is based on the realisation of a full thermoplastic elastomer preform (200) or a preform (204) having a central aperture (202'). Before or after elongating said preform (200, 204) to a predetermined length and a predetermined lateral dimension, the core of the preform is filled and hardened so as to provide an optical waveguide (1) of the invention. The invention relates also to a 3D printing method to realize the preform (200, 204).

High-power liquid-cooled pump and signal combiner

Embodiments of the present invention are generally related to a high-power liquid-cooled pump and signal combiner and methods thereof for fiber optic applications. More specifically, embodiments of the present invention relate to a pump and signal combiner capable of conveying several kilowatts of pump laser power for kilowatt class rare-earth doped fiber amplifiers without suffering thermal damage. In one embodiment of the present invention, a high-power, heat dissipating optical fiber device comprises a section of optical fiber configured to propagate light, a cooling chamber, substantially encapsulating the optical fiber, and a fluid within the cooling chamber having a refractive index selected to control the interaction and propagation of the light in the fluid.

Downhole cables with both fiber and copper elements

Provided is a method of manufacturing a downhole cable, the method including, forming a helical shape in an outer circumferential surface of a metal tube, the metal tube having a fiber element housed therein, and stranding a copper element in a helical space formed by the metallic tube. Also provided is a downhole cable including, a metallic tube having a helical space in an outer circumferential surface thereof, wherein the metallic tube has a fiber element housed therein, and a copper element disposed in a helical space formed by the steel tube. Double-tube and multi-tube configurations of the downhole cable are also provided.

IMPROVEMENTS WITH CABLES FOR COMMUNICATIONS

MATERIAL ABLATION DEVICE, PARTICULARLY FOR DENTISTRY.

一种填充液体的双芯光子晶体光纤

本发明涉及光纤技术领域，公开了一种填充液体的双芯光子晶体光纤。包括两条纤芯以及设置在两条纤芯外围的包层，在包层中沿包层的长度方向间隔设有多条空气孔，且多条空气孔在包层横截面上的投影成行分布，其中的奇数行空气孔包括横截面形状为圆形的多个第一空气孔，偶数行空气孔包括横截面形状为椭圆形的多个第二空气孔；在最接近包层横截面中心轴线的一行第一空气孔中且最接近包层中心的两个第一空气孔之间的包层部分形成第一纤芯，在最接近包层横截面中心轴线的另一行第一空气孔中且最接近包层中心的两个第一空气孔之间的包层部分形成第二纤芯。本发明具有短耦合长度和高消光比特性，非常适合制作偏振分束器和与偏振无关的耦合器。

Optical waveguide device

Provided is an optical waveguide device ( 100 ) including a substrate ( 3 ) formed into a plate shape, a soft material ( 2 ) having swellability, formed into a film shape, and provided on a side of one surface of the substrate, a pair of adhesive regions (B 1 ), formed at an interface between the substrate and the soft material, in which the substrate and the soft material are adhered to each other, a non-adhesive region (B 2 ) formed so that the substrate and the soft material are not adhered to each other between the pair of adhesive regions, a protruding part ( 2 B) in which a channel is formed so as to protrude in the non-adhesive region in the soft material, a liquid (W) filled into the channel and having a higher refractive index than the soft material, a pair of liquid feed tubes ( 8 ) connected to both ends of the channel, and a pair of optical fibers ( 9 ) inserted into the pair of liquid feed tubes respectively, wherein an optical waveguide is formed in the protruding part, and the optical waveguide includes a cladding formed of the soft material, and includes a core formed of the liquid in the channel.

Hollow-core fiber based broadband radiation generator with extended fiber lifetime

An optical component for a broadband radiation source device, the optical component configured for generating a broadband output upon receiving pump radiation and including: a hollow-core photonic crystal fiber (HC-PCF); and a gas mixture filling the HC-PCF, wherein the gas mixture includes a mixture of at least one first gas configured for the generation of the broadband radiation and at least one second gas including or consisting of helium.

具有經延長光纖壽命之基於空芯光纖之寬帶輻射產生器

本發明揭示一種用於一寬帶光源器件之光學組件，該光學組件經組態用於在接收泵浦輻射時產生一寬帶輸出，且包含：一空芯光子晶體光纖(HC-PCF)；及一氣體混合物，其填充該HC-PCF，其中該氣體混合物包含經組態用於寬帶輻射之產生的至少一種第一氣體及包含氦氣或由其組成的至少一種第二氣體的一混合物。

Hollow core fiber light source and a method for manufacturing a hollow core fiber

A method of processing an out-coupling end of a hollow core fiber including a plurality of anti-resonance elements surrounding a hollow core, and a hollow core fiber having been so processed. The method may include performing a tapering step to form a taper in the anti-resonance elements; performing a cleaving step at the taper to form at least one tapered out-coupling end of the hollow core fiber; and performing an end processing step including further heating the out-coupling end in a controlled manner to smoothen the out-coupling end.

Terminated hollow-core fiber with suspended fiber-end

A terminated hollow-core optical fibre (fiber)100 includes an outer capillary 140 having an end-face 140F, a hollow-core optical fibre 110 having a fibre-end 110E located inside the outer capillary 140 a non-zero distance 180 away from the end-face 140F of the outer capillary 140, a fibre jacket 120 disposed on a surface of the hollow-core optical fibre 100, and an inner capillary 130 disposed between the fibre jacket 120 and an inner surface of the outer capillary 140. The inner capillary 130 holds the hollow-core optical fibre 100 via the fibre jacket 120 such that the fibre-end 110E protrudes from the inner capillary 130 and is suspended inside the outer capillary 140. The terminated hollow-core optical fibre 100 further includes an endcap 150 adjacent the end-face 140F of the outer capillary 140. This configuration positions the sensitive and potentially fragile fibre-end 110E close to the endcap 150 in a protected environment, while avoiding direct contact between the fibre-end 110E and other mechanical structures, and can be realized without fusing anything to the light-transmitting surfaces of the endcap 150.

光学的に向上させられた高解像度イメージガイド

【課題】高解像度および高透過率を維持しながら、減じられた分光透過率損失および減じられたクロストークを伴う、高いコア対クラッディング面積比を有する、光学的に向上させられた高解像度イメージガイドを提供する。【解決手段】イメージガイドであって、前記イメージガイドは、それぞれイメージ入力端部およびイメージ出力端部を有する複数の光ファイバを有する光ファイババンドルであって、各光ファイバは、コアおよび前記コアを包囲するクラッディングを有する光ファイババンドルと、前記光ファイババンドルを包囲する保護シースと、を備え、前記イメージガイドは、５５０ｎｍにおける２５％以上の透過率、４５０～７００における１５％以下の透過率変化、１００ｌｐ／ｍｍ以上の解像度および０．９０以上のコントラスト値を有し、前記透過率、透過率変化、解像度およびコントラスト値は、１０００ｍｍの光ファイババンドル長さにて測定される。【選択図】なし

一种基于回音壁模式的光纤折射率传感器及测量方法

本发明公开了本发明提供一种基于回音壁模式测量液体折射率传感器及测量方法，属于光纤传感技术领域。双芯光纤与毛细管光纤直接接触，双芯光纤的末端打磨成多个满足全反射定律的斜面，激光通过双芯光纤的斜面发生多次全反射，其产生的强倏逝波在双芯光纤的末端耦合到毛细管光纤内形成回音壁模式，对外界折射率变化敏感，达到精确测算样本液体的折射率的目的。本发明的一种基于回音壁模式的光纤折射率传感器及测量方法，具有样本液体需求量小，可内外层检测，损耗低，器件体积小，灵敏度高，可在线测量，易集成和低成本等优点。

Uv light disinfection and cleaning of narrow tube lumens

Systems and methods for cleaning and disinfecting contaminated tube lumens are described herein. One system includes an ultraviolet light source and a sterile fluid reservoir fluidly coupled to a liquid light guide. The system is configured to allow simultaneous access and propagation of ultraviolet light and fluid in a tube having a lumen to be cleaned and disinfected. The light guide can be moved inside the tube and simultaneously emit ultraviolet light through its walls and at its distal end into the interior of the contaminated tube. A flush of sterile fluid from an open end of the liquid light guide removes debris and micro-organism detached from the inner surface during light exposure. The sterile fluid can be a high refractive index ionic solution promoting light propagation.

基于磁流体的可编程光纤光栅

本发明提供的是一种基于磁流体的可编程光纤光栅。其特征是：它由用户控制端1、恒流源2、光栅周期控制系统3、微型电磁铁控制阵列4、毛细管光纤5、磁流体6和微型电磁铁贴片阵列7组成。本发明可用于光栅周期可控的光纤光栅器件的制作，如：光学滤波器、色散补偿器和光纤延时器等，可广泛用于光纤传感和光纤通信领域。

一种温控开关效应的联结型液芯反谐振光纤及其应用

一种温控开关效应的联结型液芯反谐振光纤及其应用，属于光学与激光技术领域。该温控开关效应的联结型液芯反谐振光纤，为双层联结型反谐振结构，其在外包层内侧周向均布的6对‑10对的中心对称联结孔，不包括7对；外层反谐振孔半径>内层反谐振孔半径；在联结管内管形成的内层反谐振孔中，选择3个孔以上填充易产生SPR效应的物质；液芯受温度影响的折射率变化范围包含光纤材质的折射率。该温控开关效应的联结型液芯反谐振光纤相比于传统的光开关，其结构更为简单，体积更小，且可以根据不同材质来设计开关温度，能够实现在设计中的设定温度产生开关效应，对于光学元件开发具有非常重要的意义。

光纤低频振动传感器、传感系统及上述传感器制备方法

本发明公开了一种光纤低频振动传感器、传感系统及上述传感器制备方法，单模光纤熔接在第一空芯光纤的上端，第一空芯光纤下端通过封堵结构封闭，第一空芯光纤内部容纳有填充液体，填充液体内形成气泡。通过上述优化设计的光纤传感器，结构简单，微型化，一方面，利用红外激光的光热效应使液腔内液体产生温度梯度，由于马兰戈尼效应，进而实现液腔内的气泡悬浮，另一方面，红外激光作为信号光源；检测时，外部振动引起液体流动，进而带动悬浮气泡振荡，改变干涉腔长，通过干涉光的强度，检测振动信号，从而实现高灵敏度抗干扰低频振动检测。

Optofluidic apparatus, method, and application

A reconfigurable optofluidic apparatus includes a microfluidic chip including a microfluidic channel further including an inlet for a liquid core waveguide fluid; a channel pathway for the liquid core waveguide fluid; a plurality of non-core waveguide fluid inlets; a switching chamber having a larger cross sectional area than the channel pathway; and an outlet for the liquid core waveguide fluid and non-core waveguide fluid, further including a plurality of non-liquid core waveguides disposed in the switching chamber. Light input to the apparatus propagates in the liquid core/liquid cladding (liquid) waveguide. The path of the liquid waveguide can be steered in a region of the apparatus over one of the non-liquid core waveguides such that the light is end-fire- or evanescently-coupled into the non-liquid core waveguide and output therefrom or between two of the non-liquid core waveguides and not coupled or output. Associated optofluidic switching methods are disclosed.

Herstellungsverfahren für eine Wellenleiterstruktur

Herstellungsverfahren für eine Wellenleiterstruktur, umfassend die Schritte: Einbringen eines Wellenleiters (101) in mindestens einen Wellenleiterhalter (106, 106a, 106b), Fixieren der Position des Wellenleiters (101) im Wellenleiterhalter (106, 106a, 106b) und Teilen des Wellenleiters (101) in mehrere inhärent koaxiale Wellenleitersegmente (101a, 101b, 101c, 101d), dadurch gekennzeichnet, dass die Fixierung gasdicht erfolgt, so dass zwischen den Wellenleitersegmenten (101a, 101b, 101c, 101d) durch die Fixierung hindurch kein Gasaustausch stattfindet, und in Längsrichtung der Wellenleiterstruktur mindestens ein Bereich ohne Wellenleiter (101) mit einer Länge zwischen 1 mm und 15 mm zur effizienten Evakuierung von Gas ausgebildet wird.

光導波路デバイス

板状に形成された基板（３）と、膨潤性を有しフィルム状に形成され、基板の一面側に設けられたソフトマテリアル（２）と、基板とソフトマテリアルとの界面において形成され、基板とソフトマテリアルとを接着する一対の接着領域（Ｂ１）と、一対の接着領域の間において基板とソフトマテリアルとを接着しないように形成された非接着領域（Ｂ２）と、ソフトマテリアルの非接着領域において突出するように流路が形成された突出部（２Ｂ）と、流路に充填されソフトマテリアルに比して高屈折率を有する液体（Ｗ）と、流路の両端に接続された一対の送液チューブ（８）と、一対の送液チューブのそれぞれに挿入された一対の光ファイバー（９）と、を有し、突出部には、ソフトマテリアルにより形成されたクラッドと、流路において液体により形成されたコアとを有する光導波路が形成されている、光導波路デバイス（１００）である。

標的の偏光測定特徴付けの為のシステム

標的（Ｓ）の偏光測定特徴付けの為のシステム（１）であって、光源（３０）から該標的（Ｓ）に光を伝播させる為の液体光ガイド（ＬＬＧ）（１５）と、該ＬＬＧ（１５）内に伝播し、該標的によって反射された、該光の偏光を分析する働きをする偏光状態分析器（ＰＳＡ）（４１）、及び該ＬＬＧ（１５）に注入された光の該偏光を変調する為の偏光状態生成器（ＰＳＧ）（４０）、のうちの少なくとも１つと、該ＬＬＧ（１５）によって照明された該標的（Ｓ）によって後方散乱された光を検出する為の光検出器（２０）とを備えている、前記システム（１）。【選択図】図１

Terminated hollow-core fiber with suspended fiber-end

A terminated hollow-core optical fiber includes an outer capillary having an end-face, a hollow-core optical fiber having a fiber-end located inside the outer capillary a non-zero distance away from the end-face of the outer capillary, a fiber jacket disposed on a surface of the hollow-core optical fiber, and an inner capillary disposed between the fiber jacket and an inner surface of the outer capillary. The inner capillary holds the hollow-core optical fiber via the fiber jacket such that the fiber-end protrudes from the inner capillary and is suspended inside the outer capillary. The terminated hollow-core optical fiber further includes an endcap adjacent the end-face of the outer capillary. This configuration positions the sensitive and potentially fragile fiber-end close to the endcap in a protected environment, while avoiding direct contact between the fiber-end and other mechanical structures, and can be realized without fusing anything to the light-transmitting surfaces of the endcap.

一种微流控光纤型可调光导

本发明公开了一种微流控光纤型可调光导，其特征在于包括光输入端口、光输出端口、微流体腔体、多角度光导段；所述微流体腔体包括微流体输入端、微流体输出端、微流体通道；所述微流体腔体内部结构包括上包层、芯层、下包层和衬底；所述多角度光导段的光导传播方向与水平方向设置多处夹角。通过改变微流体腔体中液体的折射率来控制光导的输出端口中光线的衰减和加强，此光导结构微小可操控光传输、可调整光功率，具有良好的光学性能。

基于表面等离子体增强机制d型微结构光纤温度传感器

本发明属于传感器技术领域，公开了一种基于表面等离子体增强机制D型微结构光纤温度传感器，包括背景材料，背景材料由一个圆弧曲面和一个平面围成D型，平面表面涂覆有金属膜，背景材料内包裹有空气孔和纤芯，纤芯位于圆弧曲面的圆心处，空气孔规则排列于纤芯周围，纤芯内填充液体形成液体纤芯传输通道。本发明提供的基于表面等离子体增强机制D型微结构光纤温度传感器，具有高线性度和高稳定性，实现了温度高灵敏度和宽量程范围的测量。本发明适用于测量温度。

Multicore fiber and optical cable

A multicore fiber that includes: three or more cores that transmit in single-mode transmission; a common clad that covers a periphery of the three or more cores; and a low-refractive index portion that has a refractive index lower than a refractive index of the clad. The multicore fiber further includes a region having the three or more cores arranged annularly on a cross-section perpendicular to a longitudinal direction. At least a portion of the low-refractive index portion is arranged inside a minimum inscribed circle of two adjacent cores within the region.

Vorrichtung sowie Verfahren zur spektroskopischen Analyse eines Prozessmediums

Die Erfindung betrifft eine Vorrichtung (1) zur spektroskopischen Analyse eines Prozessmediums (3). Die Vorrichtung (1) umfasst einen Ultrakurzpulslaser (5) zur Erzeugung eines gepulsten Laserstrahls (15), eine gasgefüllte optische Hohlkernfaser (7), durch die der gepulste Laserstrahl (15) propagiert und die dergestalt ausgebildet ist, dass bei der Propagation die Laserpulse des gepulsten Laserstrahls (15) über nichtlineare optische Effekte spektral erweitert werden, unter Erhalt eines spektral erweiterten gepulsten Laserstrahls, der aus gasgefüllten optischen Hohlkernfaser (7) als Messlaserstahl (17) austritt, eine optische Transportfaser (9) in Form einer optischen Hohlkernfaser für die Zuführung des Messlaserstrahls (17) in das Prozessmedium (3), mit welchem der Messlaserstrahl (17) wechselwirkt, eine Detektionseinrichtung (11) zur Detektion von sich durch die Wechselwirkung des Messlaserstrahls (17) mit dem Prozessmedium (3) ergebender elektromagnetischer Strahlung (21) unter Erhalt entsprechender Messdaten (M), sowie eine Auswertungseinrichtung (13) zur Bestimmung einer oder mehrerer Eigenschaften (E) des Prozessmediums (3) aus den erhaltenen Messdaten (M).