Suppression of Polarization Induced Signal Fading and Phase Noise Utilizing Orthogonal-Polarization Switching Method

Zhengliang, 胡正良 Hu; Peng, 蒋鹏 Jiang; Lina, 马丽娜 Ma; Yongming, 胡永明 Hu

doi:10.3788/cjl201643.0910001

中国激光

2016

DOI: 10.3788/cjl201643.0910001

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Suppression of Polarization Induced Signal Fading and Phase Noise Utilizing Orthogonal-Polarization Switching Method

胡正良 Hu Zhengliang¹,

蒋鹏 Jiang Peng²,

马丽娜 Ma Lina³

et al.

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Polarization fading suppression in distributed interferometric sensing by matched interference between polarization-switched pulses

deng

Wei

et al. 2022

Opt. Express

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A polarization fading suppression technique is proposed for distributed interferometric sensing systems, based on matched interference between polarization switched pulses. For each individual sensor, two sets of interferometric outputs are obtained, one corresponding to the interference between two pulses with initially parallel polarization, the other corresponding to that between two pulses with initially orthogonal polarizations. As such, at least one output presents visibility no less than 2 / 2 . By selecting the one with higher visibility for demodulation, the influence of polarization fading can be suppressed significantly, leading to distributed acoustic sensing with notably improved robustness and reliability.

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Polarization fading suppression in distributed interferometric sensing by matched interference between polarization-switched pulses

deng

Wei

et al. 2022

Opt. Express

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Coded phase-sensitive OTDR with delayed polarization multiplexing for a WFBG array

Zhang¹,

Lü²,

Li³

et al. 2023

Opt. Express

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Polarization fading degrades the performance of phase-sensitive optical time-domain reflectometry (φ-OTDR) seriously and has to be suppressed. A novel scheme is proposed in this paper to combat polarization fading, which features a quite simple transceiver structure by exploiting both polarization diversity through delayed polarization multiplexing and the aperiodic autocorrelation of pseudorandom binary sequence. The components of Jones matrix of a sensing fiber are then shown at those four peaks of aperiodic autocorrelation and can be obtained directly without complicated computation to give a polarization independent phase variation due to vibration. Moreover, the scheme does not require stringent match between the delayed time and the spacing between sensors. The proposed scheme is demonstrated through experiment on a weak fiber Bragg grating (WFBG) array, which shows a high crosstalk rejection ratio among sensors of more than 50 dB and a high dynamic range of more than 30 dB.

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基于fpga的量子通信系统偏振态制备及控制集成化

Zhang Yingqiang,

Cheng Ziyu,

Li Haizhen

et al. 2023

激光与光电子学进展

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Suppression of Polarization Induced Signal Fading and Phase Noise Utilizing Orthogonal-Polarization Switching Method

Cited by 3 publications

References 0 publications

Polarization fading suppression in distributed interferometric sensing by matched interference between polarization-switched pulses

Polarization fading suppression in distributed interferometric sensing by matched interference between polarization-switched pulses

Coded phase-sensitive OTDR with delayed polarization multiplexing for a WFBG array

基于fpga的量子通信系统偏振态制备及控制集成化

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