13-06-2019 дата публикации
Номер: US20190178688A1
The present invention discloses a Fiber Bragg Grating demodulation device with a suppressed fluctuation at a variable ambient temperature and a demodulation method. The device comprises a broadband light source (), an optical attenuator (), a tunable F-P filter (), a first optical fiber isolator (), an erbium-doped optical fiber amplifier (), an optical fiber first-stage beam splitter (), a first optical fiber second-stage beam splitter (), optical fiber circulators (), FBG sensor arrays (), a first photoelectric detector array (), an optical fiber gas cell (), a second optical fiber second-stage beam splitter (), an optical fiber F-P etalon (), a notch filter (), an optical fiber assisted interferometer (), a data acquisition card () and a processor (). 11234156718916110721112171813421415162. A Fiber Bragg Grating demodulation device for suppressing fluctuation at a variable ambient temperature , wherein the device comprises a broadband light source () , an optical attenuator () , a tunable F-P filter () , a first optical fiber isolator () , an erbium-doped optical fiber amplifier () , an optical fiber first-stage beam splitter () , a first optical fiber second-stage beam splitter () , optical fiber circulators () , Fiber Bragg Grating sensor arrays () , a first photoelectric detector array () , an optical fiber gas cell () , a second optical fiber second-stage beam splitter () , an optical fiber F-P etalon () , a notch filter () , a data acquisition card () , a processor () , and an optical fiber assisted interferometer () consisting of a second optical fiber isolator () , an optical fiber coupler () , a Faraday polarizer () and a second photoelectric detector array ();{'b': 1', '2', '3', '3', '5', '41', '6', '71', '9', '8', '16', '8', '10', '16', '72', '11', '12', '16', '13', '42', '15', '14', '11', '3', '16', '16', '18', '17, 'wherein light emitted from the broadband light source () is processed by the optical attenuator () to satisfy the optical power ...
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