光谱学与光谱分析
光譜學與光譜分析
광보학여광보분석
SPECTROSCOPY AND SPECTRAL ANALYSIS
2014年
5期
1191-1195
,共5页
袁程旭%王子南%贾新鸿%黎进%闫晓东%崔安彬
袁程旭%王子南%賈新鴻%黎進%閆曉東%崔安彬
원정욱%왕자남%가신홍%려진%염효동%최안빈
布里渊增益谱%光纤传感%超长光纤环形激光器%分布式放大
佈裏淵增益譜%光纖傳感%超長光纖環形激光器%分佈式放大
포리연증익보%광섬전감%초장광섬배형격광기%분포식방대
Brillouin gain spectrum%Fiber sensor%Ultra-long fiber laser%Distributed amplification
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28με/1.4℃应变/温度精度。
首次將超長光纖環形激光器的光放大應用于佈裏淵光時域分析（BOTDA）傳感繫統，以延伸傳感距離。通過對佈裏淵泵浦消耗、拉曼泵浦相對彊度譟聲（RIN ）轉移的抑製及拉曼泵浦功率分佈的優化，基于對佈裏淵增益譜分析的原理在94 km的傳感距離上實現瞭3 m空間分辨率，以及全程28με/1.4℃應變/溫度精度。
수차장초장광섬배형격광기적광방대응용우포리연광시역분석（BOTDA）전감계통，이연신전감거리。통과대포리연빙포소모、랍만빙포상대강도조성（RIN ）전이적억제급랍만빙포공솔분포적우화，기우대포리연증익보분석적원리재94 km적전감거리상실현료3 m공간분변솔，이급전정28με/1.4℃응변/온도정도。
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/tempera-ture accuracy of 28 /1.4 ℃ .
