5 October 2009 12-km distributed fiber sensor based on differential pulse-width pair BOTDA
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Proceedings Volume 7503, 20th International Conference on Optical Fibre Sensors; 75032G (2009) https://doi.org/10.1117/12.834919
Event: 20th International Conference on Optical Fibre Sensors, 2009, Edinburgh, United Kingdom
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.
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Yongkang Dong, Yongkang Dong, Xiaoyi Bao, Xiaoyi Bao, Wenhai Li, Wenhai Li, "12-km distributed fiber sensor based on differential pulse-width pair BOTDA", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75032G (5 October 2009); doi: 10.1117/12.834919; https://doi.org/10.1117/12.834919
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