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Proceedings Paper

Polarization characteristics of graphene-coated surface core fiber
Author(s): Shuqiang Li; Chunying Guan; Xing Zhong; Yize Shen; Libo Yuan
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Paper Abstract

A technique to enhance the response of Brillouin distributed sensors is proposed and experimentally validated. The method consists in creating a multi-frequency pump pulse interacting with a multi-frequency continuous-wave probe. The power of each pulse at a distinct frequency is lower than the threshold for nonlinear effects, while the sensor response remains given by the total power of all pulses. Distinct frequency pulses are delayed to avoid temporal overlapping and cross-interaction; this requires to smartly reconstruct the traces before photo-detection. The method is validated in a 50 km-long sensor using 3 frequencies, demonstrating a signal-to-noise ratio enhancement of 4.8 dB.

Paper Details

Date Published: 2 June 2014
PDF: 4 pages
Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91572M (2 June 2014); doi: 10.1117/12.2059077
Show Author Affiliations
Shuqiang Li, Harbin Engineering Univ. (China)
Chunying Guan, Harbin Engineering Univ. (China)
Xing Zhong, Harbin Engineering Univ. (China)
Yize Shen, Harbin Engineering Univ. (China)
Libo Yuan, Harbin Engineering Univ. (China)

Published in SPIE Proceedings Vol. 9157:
23rd International Conference on Optical Fibre Sensors
José M. López-Higuera; Julian D. C. Jones; Manuel López-Amo; José Luis Santos, Editor(s)

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