Distributed fiber vibration measurement based on phase extraction from time-gated digital OFDR

Shuai Wang; Xinyu Fan; Qingwen Liu; Zuyuan He

doi:10.1117/12.2195858

28 September 2015 Distributed fiber vibration measurement based on phase extraction from time-gated digital OFDR

Shuai Wang, Xinyu Fan, Qingwen Liu, Zuyuan He

Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 96342W (2015) https://doi.org/10.1117/12.2195858
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil

Abstract

We demonstrate a novel distributed fiber vibration sensor based on the phase extraction from time-gated digital optical frequency domain reflectometry (TGD-OFDR), which have an advantage of wide dynamic range. With the much improved signal to noise ratio (SNR) compared to conventional phase-sensitive optical time domain reflectometry (OTDR), the phase of optical signals is extracted over a long distance up to 29 km with 2.2 m spatial resolution.

Citation Download Citation

Shuai Wang, Xinyu Fan, Qingwen Liu, and Zuyuan He "Distributed fiber vibration measurement based on phase extraction from time-gated digital OFDR", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96342W (28 September 2015); https://doi.org/10.1117/12.2195858

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