Volume 54, Issue 3 pp. 702-707

Fiber birefringence measurement based on a beat-frequency-interrogated multilongitudinal-mode distributed bragg reflector erbium-doped fiber laser

Hao Zhang

Hao Zhang

Key Laboratory of Opto-Electronic Information and Technology, Ministry of Education, Institute of Modern Optics, Nankai University, Tianjin 300071, China

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Bo Liu

Corresponding Author

Bo Liu

Key Laboratory of Opto-Electronic Information and Technology, Ministry of Education, Institute of Modern Optics, Nankai University, Tianjin 300071, China

Key Laboratory of Opto-Electronic Information and Technology, Ministry of Education, Institute of Modern Optics, Nankai University, Tianjin 300071, ChinaSearch for more papers by this author
Chenglai Jia

Chenglai Jia

Key Laboratory of Opto-Electronic Information and Technology, Ministry of Education, Institute of Modern Optics, Nankai University, Tianjin 300071, China

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First published: 20 January 2012
Citations: 3

Abstract

A novel fiber birefringence measurement scheme based on beat frequency interrogation of a multilongitudinal-mode distributed Bragg reflector erbium-doped fiber laser is presented and experimentally demonstrated. By analyzing the laser beat generation mechanism, an analytic expression describing fiber birefringence in terms of laser wavelength, laser beat frequency, and the fiber laser geometry has been obtained. Calculation of fiber birefringence based on the experimental observation of laser beat frequency shift indicates that the strain dependence of fiber birefringence turns out a perfect linear monotone decreasing relationship with a strain coefficient of ∼−2.2 × 10–11/με, which is in good agreement with related reports. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:702–707, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26630

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