Minardo Aldo, Catalano Ester, Zeni Luigi
Opt Express. 2016 Oct 31;24(22):25424-25431. doi: 10.1364/OE.24.025424.
A new Brillouin optical time-domain analysis (BOTDA) technique for acquiring the full Brillouin gain spectrum (BGS) at high speed is proposed and demonstrated. The method employs a frequency swept microwave source for the generation of the probe wave, so that the entire BOTDA measurement is taken within the duration of the frequency sweep itself. By properly setting the duration of the sweep, the repetition rate of the pump pulses and the number of averages, truly distributed and dynamic measurements of the BGS are possible using a set-up at a fraction of the cost and complexity of the previously reported fast-BOTDA methods.
提出并演示了一种用于高速获取全布里渊增益谱（BGS）的新型布里渊光时域分析（BOTDA）技术。该方法采用扫频微波源来产生探测波，从而在扫频持续时间内完成整个BOTDA测量。通过适当设置扫频持续时间、泵浦脉冲重复率和平均次数，利用一种装置就能以低于先前报道的快速BOTDA方法的成本和复杂度的一小部分，实现对BGS进行真正的分布式动态测量。
