光谱学与光谱分析, 2014, 34 (5): 1191, 网络出版: 2014-05-06
基于超长环形激光器泵浦的94 km布里渊分布式传感系统
94 km Brillouin Distributed Optical Fiber Sensors Based on Ultra-Long Fiber Ring Laser Pumping
布里渊增益谱 光纤传感 超长光纤环形激光器 分布式放大 Brillouin gain spectrum Fiber sensor Ultra-long fiber laser Distributed amplification
摘要
首次将超长光纤环形激光器的光放大应用于布里渊光时域分析(BOTDA)传感系统, 以延伸传感距离。 通过对布里渊泵浦消耗、 拉曼泵浦相对强度噪声（RIN）转移的抑制及拉曼泵浦功率分布的优化, 基于对布里渊增益谱分析的原理在94 km的传感距离上实现了3 m空间分辨率, 以及全程28 με/1.4 ℃应变/温度精度。
Abstract
A novel optical amplification configuration based on ultra-long fiber laser with a ring cavity was proposed and applied to Brillouin optical time-domain analysis (BOTDA) sensing system, in order to extend the measurement distance significantly. The parameters used in the experiment were optimized, considering the main limitations of the setup, such as depletion, self-phase modulation (SPM) and pump-signal relative intensity noise (RIN) transfer. Through analyzing Brillouin gain spectrum, we demonstrated distributed sensing over 94 km of standard single-mode fiber with 3 meter spatial resolution and strain/temperature accuracy of 28 /1.4 ℃.
袁程旭, 王子南, 贾新鸿, 黎进, 闫晓东, 崔安彬. 基于超长环形激光器泵浦的94 km布里渊分布式传感系统[J]. 光谱学与光谱分析, 2014, 34(5): 1191. YUAN Cheng-xu, WANG Zi-nan, JIA Xin-hong, LI Jin, YAN Xiao-dong, CUI An-bin. 94 km Brillouin Distributed Optical Fiber Sensors Based on Ultra-Long Fiber Ring Laser Pumping[J]. Spectroscopy and Spectral Analysis, 2014, 34(5): 1191.
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