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Proceedings Paper

12-km distributed fiber sensor based on differential pulse-width pair BOTDA
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Paper Abstract

We demonstrate a 12-km differential pulse-width pair BOTDA using 40/50 ns pulses with DC-coupled detection. A spatial resolution of 1 m and a narrowband Brillouin gain spectrum of 33 MHz are obtained simultaneously compared with 88 MHz for 10 ns pulse. The experimental results also show that the differential Brillouin gain is improved by 6.8 times over direct Brillouin gain of 10 ns pulse, and temperature uncertainty for 40/50 ns pulses is 0.25 °C and while for 10 ns pulse is 1.8 °C.

Paper Details

Date Published: 5 October 2009
PDF: 4 pages
Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75032G (5 October 2009); doi: 10.1117/12.834919
Show Author Affiliations
Yongkang Dong, Univ. of Ottawa (Canada)
Xiaoyi Bao, Univ. of Ottawa (Canada)
Wenhai Li, Univ. of Ottawa (Canada)

Published in SPIE Proceedings Vol. 7503:
20th International Conference on Optical Fibre Sensors
Julian D. C. Jones, Editor(s)

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