Proposal of a water immersion detection method for OPGWs using Fresnel reflection at an optical fiber end

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  • MORIMURA Shun
    System Engineering Research Laboratory, Central Research Institute of Electric Power Industry
  • KURONO Masahiro
    System Engineering Research Laboratory, Central Research Institute of Electric Power Industry

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Other Title
  • ファイバ端面反射によるOPGW浸水検出手法の提案(アクセスシステムおよびアクセス用光部品,光無線システム(ROF,FWA等),光映像伝送(CATV含む),オペレーション/保守監視,光計測,光ファイバ,光ファイバケーブル,一般)
  • ファイバ端面反射によるOPGW浸水検出手法の提案
  • ファイバ タンメン ハンシャ ニ ヨル OPGW シンスイ ケンシュツ シュホウ ノ テイアン

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Abstract

We propose a new technique as a dew condensation water detection method in optical joint boxes used for connection of OPGWs (OPtical Ground Wires) using Fresnel reflectivity change between refractive indices of air and water at an optical fiber end. Using with an OTDR (Optical Time Domain Reflectometer), the method can be operated for detection to a long span fiber line without electric power supplies. In this paper, also with the basic detection principle, experimental results of dew condensation water detection in a pseudo joint box are described.

Journal

  • ITE Technical Report

    ITE Technical Report 32.52 (0), 155-160, 2008

    The Institute of Image Information and Television Engineers

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