Abstract

【課題】幅広い波長範囲で高分解能に分光測定を行うことができるとともに、堅牢でかつ小型化された導波路型の分光光度計を提供する。 【解決手段】被測定光は光入力部101で集光され、光ファイバ102を介して光分岐回路104に入力される。光分岐回路104は入力光をそれぞれ異なる波長帯の光を透過する光フィルタが挿入されたN本の光導波路に分岐する。105はN個のアレイ導波路回析格子が積層された多層アレイ導波路回析格子であり、光分岐回路104から出力される異なる波長帯のN個の光がそれぞれ対応する層のアレイ導波路回析格子に入力される。各層のアレイ導波路回析格子はそれぞれの入力光を分光してM本の光導波路に出力し、各層のアレイ導波路回析格子の出力光は受光部106で受光される。 【選択図】図1A
PROBLEM TO BE SOLVED: To provide a waveguide type spectrophotometer that is capable of spectrophotometry in a broad wavelength range and with high resolution, and is sturdy and compact.SOLUTION: In a spectrophotometer, light rays to be measured are condensed by an optical input unit 101 and inputted to a light branching circuit 104 via an optical fiber 102; the light branching circuit 104 branches the input light to N optical waveguides into which optical filters, each transmitting light of a different wavelength band, are inserted; reference sign 105 denotes a multi-layered array waveguide diffraction grating formed by stacking N array waveguide diffraction gratings; N light rays of different wavelength bands outputted from the light branching circuit 104 are inputted to respectively corresponding array waveguide diffraction grating layers; each array waveguide diffraction grating layer branches the light ray inputted to it and outputs the branched rays to M optical waveguides, and the output ray of each array waveguide diffraction grating layer is received by a light receiving part 106.

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    KR-101556399-B1October 13, 2015한국광기술원Mach-zehnder type Fourier transform spectrometer based on planar lightwave circuit and measurement apparatus using the same
    KR-101671059-B1October 31, 2016한양대학교 산학협력단광도파로 기반 분광기 및 그를 구비한 광간섭성 단층 촬영 장치