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Proceedings Paper

175km phase-sensitive OTDR with hybrid distributed amplification
Author(s): Zinan Wang; Jiajia Zeng; Jin Li; Fei Peng; Li Zhang; Yi Zhou; Han Wu; Yunjiang Rao
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Paper Abstract

A phase-sensitive optical time-domain reflectometry with 175km sensing range is demonstrated using the combination of co-pumping 2nd-order Raman amplification based on random fiber lasing, counter-pumping 1st-order Raman amplification, and counter-pumping Brillouin amplification. With elaborate arrangements, each pumping scheme is responsible for the signal amplification in one particular segment of the all three. To the best of our knowledge, this is the first time that distributed vibration sensing is performed over such a long distance without inserting repeaters. The novel hybrid amplification scheme demonstrated in this work can also be incorporated in other fiber-optic sensing systems for extension of sensing distance.

Paper Details

Date Published: 2 June 2014
PDF: 4 pages
Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 9157D5 (2 June 2014); doi: 10.1117/12.2071255
Show Author Affiliations
Zinan Wang, Univ. of Electronic Science and Technology of China (China)
Jiajia Zeng, Univ. of Electronic Science and Technology of China (China)
Jin Li, Univ. of Electronic Science and Technology of China (China)
Fei Peng, Univ. of Electronic Science and Technology of China (China)
Li Zhang, Univ. of Electronic Science and Technology of China (China)
Yi Zhou, Univ. of Electronic Science and Technology of China (China)
Han Wu, Univ. of Electronic Science and Technology of China (China)
Yunjiang Rao, Univ. of Electronic Science and Technology of China (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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