Simultaneous Measurement of Bend Direction and Degree of Curvature using Micromachined Grating Fibers

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: 2014/03/01

タイトル(英語): Simultaneous Measurement of Bend Direction and Degree of Curvature using Micromachined Grating Fibers

著者名: Hironori Kumazaki (Gifu National College of Technology), Munehiro Hiramatsu (Gifu National College of Technology), Hisakazu Oguri (Gifu National College of Technology), Seiki Inaba (Gifu National College of Technology), Kazuhiro Hane (Tohoku University)

著者名(英語): Hironori Kumazaki (Gifu National College of Technology), Munehiro Hiramatsu (Gifu National College of Technology), Hisakazu Oguri (Gifu National College of Technology), Seiki Inaba (Gifu National College of Technology), Kazuhiro Hane (Tohoku University)

キーワード: Fiber Bragg Grating，anisotropic etching，bend sensor

要約(英語): We report the design and fabrication of a novel fiber optic bend sensor capable of measuring the bend direction and degree of curvature simultaneously. The sensor has a serial arrangement of two fiber Bragg gratings (FBGs) with two different reflection center wavelengths and similar asymmetrical cross sections with different etching faces on an independent single-mode fiber. These cross sections were fabricated by anisotropic reactive ion etching (RIE) using CF4 plasma. The reflection center wavelengths of the two FBGs shifted sinusoidally with a phase difference of π/2 as a function of the bend direction under constant bend feeder displacement. Because it was shown that the reflection center wavelength shifted linearly as a function of the degree of curvature of an FBG with an asymmetrical cross section in our previous experiment, this sensor could be used to detect both the bend direction and the curvature from a pair of central reflection wavelength shifts for two FBGs. These experimental results were compared with theoretical values calculated from a strain of the core in an etched optical fiber.

本誌: 電気学会論文誌E（センサ・マイクロマシン部門誌） Vol.134 No.3 （2014） 特集：センサ・マイクロマシン英文特集号

本誌掲載ページ: 41-46 p

原稿種別: 論文／英語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejsmas/134/3/134_41/_article/-char/ja/