Volume 51, Issue 11 pp. 2559-2563

Polarimetric multilongitudinal-mode distributed Bragg reflector fiber laser sensor for strain measurement

Hao Zhang

Corresponding Author

Hao Zhang

Institute of Modern Optics, Nankai University, Tianjin 300071, China

Institute of Modern Optics, Nankai University, Tianjin 300071, ChinaSearch for more papers by this author
Jianhua Luo

Jianhua Luo

College of Information Technical Science, Nankai University, Tianjin 300071, China

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Bo Liu

Bo Liu

Institute of Modern Optics, Nankai University, Tianjin 300071, China

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Shuangxia Wang

Shuangxia Wang

College of Information Technical Science, Nankai University, Tianjin 300071, China

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Chenglai Jia

Chenglai Jia

College of Information Technical Science, Nankai University, Tianjin 300071, China

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Xiurong Ma

Xiurong Ma

School of Electronics Information Engineering, Tianjin University of Technology, Tianjin 300191, China

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First published: 25 August 2009
Citations: 15

Abstract

A polarimetric multilongitudinal-mode distributed Bragg reflector fiber laser sensor is proposed and experimentally demonstrated. We have theoretically analyzed the mode beat mechanism of this laser sensor, which is verified by the experimental observation, and its application in strain measurement has also been studied. Experimental results indicate that both of the longitudinal mode beat (LMB) and birefringence-induced polarization mode beat signals have linear strain dependence, and the coefficients of determination reach 0.9991 and 0.9908, respectively. One possible way to improve the sensitivity of LMB-based sensing has been investigated as well. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2559–2563, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24671

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