Laser & Optoelectronics Progress, Volume. 56, Issue 17, 170617(2019)
Fast and Long-Distance Brillouin Optical Time-Domain Reflectometry Based on Raman Amplification
Herein, using a fast Brillouin optical time-domain reflectometry system with a wideband receiver and distributed Raman amplification, a long-distance distributed Brillouin sensing is realized. We study the performance difference and nonlinear phenomena observed in the system before and after Raman amplification, and also jointly optimize the Raman pump and launched pulse powers. Our experiments achieve a sensing distance of around 100 km with a spatial resolution of 50 m and accuracy of 1.2 ℃ at a sensing position of 50 km. In comparison to the system without Raman amplification, the sensing distance is increased by approximately 50 km and measurement can be completed in approximately 10 s only.
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Xiangjie Ma, Liming Zhou, Linghao Cheng, Weimin Liu. Fast and Long-Distance Brillouin Optical Time-Domain Reflectometry Based on Raman Amplification[J]. Laser & Optoelectronics Progress, 2019, 56(17): 170617
Category: Fiber Optics and Optical Communications
Received: Feb. 25, 2019
Accepted: Apr. 25, 2019
Published Online: Sep. 5, 2019
The Author Email: Ma Xiangjie (mxj9488@163.com), Cheng Linghao (chenglh@ieee.org)