分岐光線路における損失変動検出方法に関する研究

カテゴリ: 論文誌(論文単位)

グループ名: 【E】センサ・マイクロマシン部門

発行日: 2020/08/01

タイトル(英語): Study on Loss Variation Measurement of Branched Fibers

著者名: 松田　健太郎（千葉工業大学大学院工学研究科），遠藤　隆昭（千葉工業大学大学院工学研究科），長瀬　亮（千葉工業大学大学院工学研究科）

著者名(英語): Kentaro Matsuda (Graduate School of Engineering, Chiba Institute of Technology), Takaaki Endo (Graduate School of Engineering, Chiba Institute of Technology), Ryo Nagase (Graduate School of Engineering, Chiba Institute of Technology)

キーワード: 光ファイバ，光ファイバセンシング，防災，OTDR　　optical fiber，optical fiber sensing，disaster prevention，optical time domain reflectometer (OTDR)

要約(英語): In Japan, many people live in mountainous area and sometimes they experienced landslides under heavy rain. Also there are many superannuated constructions which built at 1960-70's. Wide area monitoring systems which can detect critical conditions are useful to prevent disasters. This study proposes new fiber optic loss variation measurement system which can use for wide area installed branched fiber networks. It can detect local strain variation in combination with appropriate sensors. This paper proposes new fiber optic sensing systems using different length fiber branches. If some transmission loss was induced anywhere on branched fibers, the Rayleigh backscattering signal response would be changed. We can detect where and how much the loss induced. The simulation and experiments have done using 2 branched fiber networks. The experimental results using OTDR (Optical Time Domain Reflectometer) have good agreements with simulation results. We can calculate the loss value and its position backward from the Rayleigh back scattering signal response.

本誌: 電気学会論文誌E（センサ・マイクロマシン部門誌） Vol.140 No.8 （2020）

本誌掲載ページ: 214-220 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejsmas/140/8/140_214/_article/-char/ja/