基于拉曼放大和半导体光放大的BOTDA  

Brillouin Optical Time Domain Analysis System Based on Raman Amplification and Semiconductor Optical Amplifier

作　　者：饶云江[1] 苌亮[1] 贾新鸿[1] 张超[1] 

机构地区：[1]电子科技大学光纤传感与通信教育部重点实验室,成都611731

出　　处：《电子科技大学学报》2012年第4期621-625,共5页Journal of University of Electronic Science and Technology of China

基　　金：国家863项目(2007AA01Z245)

摘　　要：从理论上分析了基于拉曼放大的布里渊光时域分析系统(BOTDA),通过建立与拉曼放大有关的泵浦光和信号光的耦合方程,对信号光波形进行了数值仿真。仿真结果表明,双端拉曼放大技术可有效地补偿传感信号的传输损耗,提高系统测量精度。搭建了基于拉曼放大和半导体光放大(SOA)相结合的BOTDA分布式光纤传感系统,实验结果与仿真结果吻合较好,针对49.6 km的传感距离,空间分辨率达到40 m,温度分辨率1℃。A Brillouin optical time domain analysis （BOTDA） system based on Raman amplification has been theoretically analyzed. The detected probe waveshape has been simulated by using the probe-pump coupled equations combined with Raman. The numerical simulation shows that the bi-directional Raman amplification is very effective for enhancing the measurement accuracy. The experimental exploration of the BOTDA with Raman amplification and semiconductor optical amplifier （SOA） has been demonstrated. The experimental results are in good agreement with the theoretical analysis. The results show that a temperature resolution of 1 ℃ was achieved over a sensing distance of 49.6 km with a 40 m spatial resolution.

关 键 词：布里渊光时域分析系统 布里渊散射 非线性光学 拉曼放大 半导体光放大 

分 类 号：TN253[电子电信—物理电子学]