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Proceedings Paper

Bending-induced sensing sensitivity in single-longitude-mode DBR fiber laser
Author(s): Jianhua Luo; Bo Liu; Hao Zhang; Mengdong He
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Paper Abstract

In this paper, a bending sensor based on distributed Bragg reflector (DBR) fiber laser with single longitudinal mode operation is presented and experimentally demonstrated. The single longitudinal mode has two split orthogonal polarization modes, introducing the intracavity birefringence and hence causing the emergence of frequency beat. Based on the bending induced birefringence, this laser can be used for curvature sensing by measurement of the beat frequency shift of polarization mode. The sensing characteristics of the laser were shown in detail through theoretical analysis and experimental verification.

Paper Details

Date Published: 23 November 2011
PDF: 9 pages
Proc. SPIE 8199, 2011 International Conference on Optical Instruments and Technology: Optical Sensors and Applications, 819915 (23 November 2011); doi: 10.1117/12.905270
Show Author Affiliations
Jianhua Luo, Central South Univ. of Forestry and Technology (China)
Bo Liu, Nankai Univ. (China)
Hao Zhang, Nankai Univ. (China)
Mengdong He, Central South Univ. of Forestry and Technology (China)


Published in SPIE Proceedings Vol. 8199:
2011 International Conference on Optical Instruments and Technology: Optical Sensors and Applications
Brian Culshaw; YanBiao Liao; Anbo Wang; Xiaoyi Bao; Xudong Fan, Editor(s)

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