OPTICAL ADJUSTMENT DEVICE, OPTICAL ADJUSTMENT METHOD, AND OPTICAL DEVICE

To provide an optical adjustment device capable of accurately measuring a distance of an optical fiber to an optical substrate of a connection destination without preparing a separate instrument.SOLUTION: An optical adjustment device 10 includes: a measurement light irradiation part 103 which has a...

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Bibliographic Details
Main Authors FURUTA HIROKAZU, SHIRAISHI TATSUAKI, KAMATANI JUNICHI
Format Patent
LanguageEnglish
Japanese
Published 30.11.2022
Subjects
MEASURING
MEASURING ANGLES
MEASURING AREAS
MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
TESTING
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Summary:To provide an optical adjustment device capable of accurately measuring a distance of an optical fiber to an optical substrate of a connection destination without preparing a separate instrument.SOLUTION: An optical adjustment device 10 includes: a measurement light irradiation part 103 which has a plurality of second optical fibers 106 to 109, and emits a plurality of lights L1 to L4 having single wavelength at mutually different timings via a plurality of second optical fibers; an optical fiber block 104 which holds emission side end parts of a first optical fiber 105 and a plurality of second optical fibers; a light detection part 110 which receives a plurality of reflection lights RL1 to RL4 via the plurality of second optical fibers; an inclination calculation part 112 which compares temporal changes of intensities for the plurality of respective reflection lights with each other and calculates an inclination of the optical fiber block with respect to an optical substrate 120; and a distance calculation part 113 which calculates an inter-end surface distance between the optical substrate and the optical fiber block on the basis of at least one of the temporal changes of intensities.SELECTED DRAWING: Figure 1 【課題】別途機器を準備することなく、接続先の光学基板に対する光ファイバーの距離を精度よく測定できる光学調整装置を提供する。【解決手段】光学調整装置１０は、複数の第２の光ファイバー１０６～１０９を有し、複数の第２の光ファイバーを介して単一波長を有する複数の光Ｌ１～Ｌ４を、互いに異なるタイミングで出射する測定光照射部１０３と、第１の光ファイバー１０５及び複数の第２の光ファイバーの出射側端部を保持する光ファイバーブロック１０４と、複数の反射光ＲＬ１～ＲＬ４を、複数の第２の光ファイバーを介して受光して、検出する光検出部１１０と、複数の反射光ごとの強度の時間変化を互いに比較して光学基板１２０に対する光ファイバーブロックの傾きを算出する傾き算出部１１２と、少なくとも１つの強度の時間変化に基づいて光学基板と光ファイバーブロックとの端面間距離を算出する距離算出部と１１３、を備える。【選択図】図１
Bibliography:Application Number: JP20210083303