Bernini Romeo, Minardo Aldo, Zeni Luigi
Istituto per il Rilevamento Elettromagnetico dell’Ambiente, Consiglio Nazionale delle Ricerche, Via Diocleziano 328, 80124 Napoli, Italy.
Opt Express. 2011 Nov 21;19(24):23845-56. doi: 10.1364/OE.19.023845.
We propose and demonstrate a long-range Brillouin Optical Time-Domain Analysis (BOTDA) distributed sensing system making use of an unbalanced double sideband probe formed by a Stokes and an anti-Stokes line. In particular, we show that for each measuring condition an optimal Stokes /anti-Stokes input power ratio exists, allowing a larger suppression of nonlocal effects induced by pump depletion. Experiments on a 50 km single-mode sensing fiber with 5 meters spatial resolution are reported.
我们提出并演示了一种远程布里渊光时域分析（BOTDA）分布式传感系统，该系统利用由斯托克斯线和反斯托克斯线形成的不平衡双边带探头。特别是，我们表明，对于每种测量条件，都存在一个最佳的斯托克斯/反斯托克斯输入功率比，从而可以更大程度地抑制由泵浦耗尽引起的非局部效应。报告了在具有5米空间分辨率的50公里单模传感光纤上进行的实验。
