09-01-2020 дата публикации
Номер: US20200012058A1
Принадлежит:
FUJIKURA LTD.
A photodetector includes: a substrate; an optical fiber disposed on the substrate; and a photodetection element fixed to the substrate, and that detects scattered light of light guided by the optical fiber. The photodetector further includes: a first fixing member and a second fixing member that fix the optical fiber to the substrate. 1. A photodetector comprising:a substrate;an optical fiber disposed on the substrate; anda photodetection element, fixed to the substrate, that detects scattered light of light guided by the optical fiber.2. The photodetector according to claim 1 , further comprising:a first fixing member and a second fixing member that fix the optical fiber to the substrate, wherein the first fixing member is disposed on an opposite side of the photodetection element from the second fixing member in a longitudinal direction of the optical fiber,the optical fiber extends in the longitudinal direction, and [{'br': None, 'i': V', '>V, 'sub': 1', '2, '(1);'}, {'br': None, 'i': V', 'V, 'sub': 3', '4, '(4),'}], 'either Expressions (1) and (2) are satisfied, or Expressions (3) and 4 are satisfiedwhere, from a top view of the substrate,{'sub': '1', 'Vis a volume of a portion of the first fixing member on a first side across the optical fiber in a transverse direction orthogonal to the longitudinal direction,'}{'sub': '2', 'Vis a volume of a portion of the first fixing member on a second side opposite to the first side,'}{'sub': '3', 'Vis a volume of a portion of the second fixing member on the first side of the optical fiber in the transverse direction, and'}{'sub': '4', 'Vis a volume of a portion of the second fixing member on the second side.'}3. The photodetector according to claim 2 , wherein{'sub': 1', '2', '2', '1, 'claim-text': [{'sub': '1', 'αis a linear expansion coefficient of a material forming the first fixing member,'}, {'sub': '2', 'αis a ...
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