Long-Period Fiber-Grating Temperature Sensors in Ge–B-Codoped Fibers with Temperature/Strain Discrimination
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概要
- 論文の詳細を見る
The temperature-sensing characteristics of long-period fiber gratings were compared for different Ge–B-codoped fibers. The temperature sensitivities varied by one order of magnitude depending on the composition of the core. The temperature sensitivity varied from 0.05 to 0.5 nm/K for the same grating period of 212 μm. The sensitivities at cryogenic temperatures down to 77 K were also studied. The strain sensitivities were measured at above the room temperature. Two different loss peaks of a single long-period grating with negative temperature sensitivities and positive strain sensitivities were used to distinguish applied temperature and strain. Discrimination characteristics using a Ge–B-codoped fiber were studied for a strain of up to 4000 μ$\varepsilon$.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2008-08-25
著者
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Mizunami Toru
Department Of Electrical Engineering Faculty Of Engineering Kyushu Institute Of Technology
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Ishida Yoshihito
Department of Electrical Engineering, Faculty of Engineering, Kyushu Institute of Technology, Kitakyushu 804-8550, Japan
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Yoshikura Shirou
Department of Electrical Engineering, Faculty of Engineering, Kyushu Institute of Technology, Kitakyushu 804-8550, Japan
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