INSPECTION METHOD, LIGHT RECEIVING DEVICE, AND INSPECTION SYSTEM

To efficiently perform both of inspection of transmission loss and inspection of arrangement of an optical fiber by one photosensor.SOLUTION: Beams are applied to each optical fiber one by one on a second end face of a multicore optical fiber, power of beams emitted from each optical fiber is measur...

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Bibliographische Detailangaben
Hauptverfasser: YAMAMOTO TOMOKAZU, TANIGAWA AKIRA
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To efficiently perform both of inspection of transmission loss and inspection of arrangement of an optical fiber by one photosensor.SOLUTION: Beams are applied to each optical fiber one by one on a second end face of a multicore optical fiber, power of beams emitted from each optical fiber is measured by a common photosensor on a first end face of the multicore optical fiber, the measured power is stored as first power for each optical fiber, beams are applied to each optical fiber one by one on a second end face of the multicore optical fiber, power of light through a member in which a ratio of transmission light is changed monotonously in a row direction of plural optical fibers is measured by a photosensor from among beams emitted from each optical fiber on the first end face of the multicore optical fiber, the measured power is stored as second power for each optical fiber, a ratio of the second power relative to the first power is calculated for each optical fiber, and arrangement of optical fibers is inspected based on the calculated ratio.SELECTED DRAWING: Figure 9 【課題】伝送損失の検査と光ファイバの配列の検査の両方を、1つの光センサで効率的に行う。【解決手段】多心光ファイバの第2の端面において各光ファイバに1本ずつ光を入射し、多心光ファイバの第1の端面において各光ファイバから出射される光のパワーを共通の光センサにより測定し、当該測定されたパワーを第1のパワーとして光ファイバごとに記憶し、多心光ファイバの第2の端面において各光ファイバに1本ずつ光を入射し、多心光ファイバの第1の端面において各光ファイバから出射された光のうち、透過する光の割合が複数の光ファイバの列方向に単調に変化する部材を透過した光のパワーを光センサにより測定し、当該測定されたパワーを第2のパワーとして光ファイバごとに記憶し、各光ファイバに対して、第1のパワーに対する第2のパワーの割合を算出し、算出された割合に基づいて、光ファイバの配列の検査をする。【選択図】図9