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Proceedings Paper

Brillouin scattering properties in partially chlorinated plastic optical fibers estimated with ultrasonic pulse-echo technique
Author(s): Kazunari Minakawa; Neisei Hayashi; Yosuke Mizuno; Kentaro Nakamura
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Paper Abstract

With their high thermal stability compared with other plastic optical fibers (POFs), partially chlorinated graded-index POFs (PCGI-POFs) are a promising candidate to develop the sensing heads of Brillouin-based distributed strain and temperature sensors. In this study, the Brillouin frequency shift (BFS) and its temperature dependence in a PCGI-POF are estimated by using ultrasonic pulse-echo technique. The estimated BFS is ~4.43 GHz with its temperature coefficient of approximately –6.9 MHz/K at 1550 nm. Its absolute value is ~5.8 times as large as that of silica single-mode fibers, and even larger than that of a perflurointated GI-POF. Its fracture strain of ~3.0% (mostly in elastic region) is small compared with other POFs, and so it appears difficult to estimate the BFS dependence on strain in a PCGI-POF with this technique. These experimental results imply that the Brillouin scattering in PCGI-POFs is potentially applicable to highprecision temperature sensing.

Paper Details

Date Published: 20 May 2013
PDF: 4 pages
Proc. SPIE 8794, Fifth European Workshop on Optical Fibre Sensors, 879439 (20 May 2013); doi: 10.1117/12.2025821
Show Author Affiliations
Kazunari Minakawa, Tokyo Institute of Technology (Japan)
Neisei Hayashi, Tokyo Institute of Technology (Japan)
Yosuke Mizuno, Tokyo Institute of Technology (Japan)
Kentaro Nakamura, Tokyo Institute of Technology (Japan)

Published in SPIE Proceedings Vol. 8794:
Fifth European Workshop on Optical Fibre Sensors
Leszek R. Jaroszewicz, Editor(s)

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