光ファイバ後方散乱光の偏光度を利用した障害区間探査の検討

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2013/11/01

タイトル(英語): Defective Section Detection of Optical Transmission Line Utilizing Degree of Polarization of Backscattered Light

著者名: 山下　育男（関西電力（株） 電力技術研究所），堤　康宏（大阪府立大学 21世紀科学研究機構），大橋　正治（大阪府立大学大学院 工学研究科 電気情報系専攻）

著者名(英語): Ikuo Yamashita (Power Engineering R&D Center, Kansai Electric Power Co. INC.), Yasuhiro Tsutsumi (Industry-University Cooperative Center for Advanced Education, Osaka Prefecture University), Masaharu Ohashi (Division of Electrical Engineering and Information Systems, Graduate School of Engineering, Osaka Prefecture University)

キーワード: 光ファイバ，光伝送路，偏光度，障害探査，後方散乱光，複屈折　　optical fiber，optical transmission line，degree of polarization，fault detection，backscattered light，birefringence

要約(英語): Novel technique for measuring a position of a fiber with a high birefringence is proposed using polarization optical time domain reflectometer (P-OTDR) for the purpose of detecting the defective section in the optical transmission line. Our technique is based on the fact that the degree of polarization (DOP) of backscattered light from the position with high birefringence becomes large when the polarization state of the input pulse coincides with either fiber axes and it becomes small in other cases. Taking the above relation into account, the fiber position with the high birefringence can be detected in our technique, as the position with lower DOP which is obtained from the average backscattered light measured for the various polarization states of input light. Moreover, it is confirmed experimentally that the position of fiber coil with a diameter of 6 cm, which is inserted into the transmission line, can be detected by our present technique. It is also confirmed that our technique can be successfully applied to the optical cables installed outside.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.133 No.11 （2013） 特集：電気関係学会関西連合大会

本誌掲載ページ: 2062-2067 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/ieejeiss/133/11/133_2062/_article/-char/ja/