Distributed measurements of vibration frequency using phase-OTDR with a DFB laser self-stabilized through PM fiber ring cavity


We have evaluated the performance of a phase-sensitive optical time domain reflectometry (φ-OTDR) system for vibration measurements utilizing a conventional telecom DFB laser self-stabilized through an external PM optical fiber ring resonator. This low-cost solution is directly compared with the use of a commercial, ultra-narrow linewidth (∼100 Hz) fiber laser implemented into the same setup. Both systems are tested for measurement of the frequency of vibration applied to a fiber at a distance of 3500 m. The obtained SNR value higher than 6 dB demonstrates the ability of the DFB laser to perform distributed measurements of vibrations with frequencies up to 5600 Hz with a spatial resolution of 10 m.

Publication DOI: https://doi.org/10.1016/j.rinp.2019.02.023
Divisions: College of Engineering & Physical Sciences
Additional Information: © 2019 Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/BY-NC-ND/4.0/).
Uncontrolled Keywords: Frequency examination,Phase-sensitive OTDR,Self-injection locking,Physics and Astronomy(all)
Publication ISSN: 2211-3797
Full Text Link:
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
https://linking ... 21137971930124X (Publisher URL)
PURE Output Type: Article
Published Date: 2019-03-01
Published Online Date: 2019-02-10
Accepted Date: 2019-02-06
Authors: Bueno Escobedo, J.l.
Jason, J.
López-mercado, C.a.
Spirin, V.v.
Wuilpart, M.
Mégret, P.
Korobko, D.a.
Zolotovskiy, I.o.
Fotiadi, A.a.

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