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Wavelength-switched phase interrogator for EFPI sensors with polarization self-calibrated
Author(s): Ji Xia; Fuyin Wang; Hong Luo; Shuidong Xiong
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Paper Abstract

The stability of the demodulation system for extrinsic Fabry-Perot interferometric(EFPI) sensors is significant to dynamic signal recovery. In the wavelength-switched demodulation system, a phase interrogation with a wavelength-switched structure has been presented. Two reflected peaks were in perpendicular polarization direction and switched in the time-domain. However, the operation point of system affected output of the linearly-polarized beams seriously, and the stability of the system decreased and even failed to work. In order to solve this problem, a polarization control unit is added into the system in this paper. The modified demodulation system has been demonstrated to have a higher stability.

Paper Details

Date Published: 25 October 2017
PDF: 6 pages
Proc. SPIE 10464, AOPC 2017: Fiber Optic Sensing and Optical Communications, 104642E (25 October 2017); doi: 10.1117/12.2285494
Show Author Affiliations
Ji Xia, National Univ. of Defense Technology (China)
Fuyin Wang, National Univ. of Defense Technology (China)
Hong Luo, National Univ. of Defense Technology (China)
Shuidong Xiong, National Univ. of Defense Technology (China)

Published in SPIE Proceedings Vol. 10464:
AOPC 2017: Fiber Optic Sensing and Optical Communications
Zi-Sen Zhao; Leping Wei; Yanbiao Liao; Weixu Zhang; Desheng Jiang; Wei Wang; Kenneth T. V. Grattan, Editor(s)

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