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Proceedings Paper

Temperature independent strain sensor based on intensity measurement using a highly birefringent photonic crystal fiber loop mirror
Author(s): Chun-Liu Zhao; Xinyong Dong; Shuqin Zhang; Wei Jin
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Paper Abstract

A fiber-optic strain sensor is demonstrated by using a short length of highly birefringent photonic crystal fiber (PCF) as the sensing element inserted in a fiber loop mirror (FLM). Due to the ultralow thermal sensitivity of the PCF, the proposed strain sensor is inherently insensitive to temperature. When a DFB laser passes through the FLM, the output power will only be affected by the transmission spectral change of the FLM caused by the strain applied on the PCF. Based on intensity measurement, an optical power meter is adequate to deduce the strain information and an expensive optical spectrum analyzer (OSA) would not be needed.

Paper Details

Date Published: 25 November 2009
PDF: 6 pages
Proc. SPIE 7634, Optical Sensors and Biophotonics, 76340F (25 November 2009); doi: 10.1117/12.851584
Show Author Affiliations
Chun-Liu Zhao, China Jiliang Univ. (China)
Xinyong Dong, China Jiliang Univ. (China)
Shuqin Zhang, China Jiliang Univ. (China)
Wei Jin, Hong Kong Polytechnic Univ. (Hong Kong, China)


Published in SPIE Proceedings Vol. 7634:
Optical Sensors and Biophotonics
Xingde Li; Qingming Luo; Vasilis Ntziachristos; Yoshiaki Yasuno, Editor(s)

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