Potential Applicability of Brillouin Scattering in Partially Chlorinated Polymer Optical Fibers to High-Precision Temperature Sensing
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概要
- 論文の詳細を見る
Using the ultrasonic pulse--echo technique, we estimate the Brillouin frequency shift (BFS) and its temperature dependence in partially chlorinated graded-index polymer optical fibers (PCGI-POFs), which have high thermal stability compared with other POFs. At 1550 nm, the estimated BFS is {\sim}4.43 GHz with its temperature coefficient of approximately -6.9 MHz/K, which is {\sim}5.8 times as large as that in silica fibers. Since the fracture strain is {\sim}3.0% (mostly in the elastic region), the BFS dependence on strain in PCGI-POFs cannot be estimated by this technique. These results indicate that Brillouin scattering in PCGI-POFs has a big potential for distributed high-precision temperature sensing.
- 2013-05-25
著者
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Nakamura Kentaro
Precision And Intelligence Lab. Tokyo Inst. Of Technol.
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Mizuno Yosuke
Precision And Intelligence Laboratory Tokyo Institute Of Technology
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Hayashi Neisei
Precision And Intelligence Laboratory Tokyo Institute Of Technology
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Hayashi Neisei
Precision and Intelligence Laboratory, Tokyo Institute of Technology, Yokohama 226-8503, Japan
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Minakawa Kazunari
Precision and Intelligence Laboratory, Tokyo Institute of Technology, Yokohama 226-8503, Japan
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