25 October 2017 Wavelength-switched phase interrogator for EFPI sensors with polarization self-calibrated
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Proceedings Volume 10464, AOPC 2017: Fiber Optic Sensing and Optical Communications; 104642E (2017) https://doi.org/10.1117/12.2285494
Event: Applied Optics and Photonics China (AOPC2017), 2017, Beijing, China
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.
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Ji Xia, Ji Xia, Fuyin Wang, Fuyin Wang, Hong Luo, Hong Luo, Shuidong Xiong, Shuidong Xiong, } "Wavelength-switched phase interrogator for EFPI sensors with polarization self-calibrated", Proc. SPIE 10464, AOPC 2017: Fiber Optic Sensing and Optical Communications, 104642E (25 October 2017); doi: 10.1117/12.2285494; https://doi.org/10.1117/12.2285494
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