Simultaneous Measurement of Bend Direction and Degree of Curvature using Micromachined Grating Fibers
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- Kumazaki Hironori
- Gifu National College of Technology
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- Hiramatsu Munehiro
- Gifu National College of Technology
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- Oguri Hisakazu
- Gifu National College of Technology
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- Inaba Seiki
- Gifu National College of Technology
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- Hane Kazuhiro
- Tohoku University
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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.
収録刊行物
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- 電気学会論文誌E(センサ・マイクロマシン部門誌)
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電気学会論文誌E(センサ・マイクロマシン部門誌) 134 (3), 41-46, 2014
一般社団法人 電気学会
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詳細情報 詳細情報について
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- CRID
- 1390001204461025152
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- NII論文ID
- 130003391584
- 40020017382
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- NII書誌ID
- AN1052634X
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- ISSN
- 13475525
- 13418939
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- NDL書誌ID
- 025344948
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
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- 使用不可