The investigation for the influence of the line-width of probe light on the phase noise of phase-sensitive optical time domain reflectometry

Chaoli Liang; Yang Lu; Xueliang Zhang; Mo Chen; Jianfei Wang; Zhou Meng

doi:10.1117/12.2504195

15 November 2018 The investigation for the influence of the line-width of probe light on the phase noise of phase-sensitive optical time domain reflectometry

Chaoli Liang, Yang Lu, Xueliang Zhang, Mo Chen, Jianfei Wang, Zhou Meng

Author Affiliations +

Proceedings Volume 10964, Tenth International Conference on Information Optics and Photonics; 109640E (2018) https://doi.org/10.1117/12.2504195
Event: Tenth International Conference on Information Optics and Photonics (CIOP 2018), 2018, Beijing, China

Abstract

In this papers, the influence of the line-width of probe light on the phase noise of phase extracted based phase-sensitive optical time domain reflectometry (Φ-OTDR) is theoretical analyzed and experimentally investigated. Analysis indicates that broad line-width probe light suffers time varying wavelength drift and high level of laser phase noise, and thus guarantees high level phase noise of the Φ-OTDR. In distributed acoustic sensing along 500 m sensing fiber, the phase noise is evaluated for probe lights of different line-widths, and experimental results display that the phase noise increases as the line-width of probe light broadens.

Citation Download Citation

Chaoli Liang, Yang Lu, Xueliang Zhang, Mo Chen, Jianfei Wang, and Zhou Meng "The investigation for the influence of the line-width of probe light on the phase noise of phase-sensitive optical time domain reflectometry", Proc. SPIE 10964, Tenth International Conference on Information Optics and Photonics, 109640E (15 November 2018); https://doi.org/10.1117/12.2504195

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