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Pulse pre-pump-BOTDA technology for new generation of distributed strain measuring system

机译:用于新一代分布式应变测量系统的脉冲预泵浦 - BOTDA技术

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Pulse Pre-Pump (PPP)-BOTDA is a new technology for distributed strain measurementsby means of optical fiber. The leakage effect on pump light is elaborately designed to stimulate the phonon when the pump pulse length is much smaller than the relaxation time of phonon. This results in immediate time re-sponse and the narrow Brillouin spectrum at the same time. In commercialized application (Neubrescope), spatial resolution of 10 centimeter and strain accuracy of 25 micro-strains were achieved. Both properties are of one order higher than that available in current products. We do believe it will meet requirements of SHM. This paper discusses the theoretical model and experimental validation of the system.
机译:脉冲预泵(PPP)-BOTDA是一种用于分布式应变测量来自光纤的新技术。当泵脉冲长度远小于声子的松弛时间时,精心设计用于泵浦光对泵浦光的泄漏效应。这导致立即反应时同时再次响应和窄布里渊谱。在商业化应用程序(Neubrescope)中,实现了10厘米的空间分辨率和25微株的应变精度。这两个属性都比当前产品中可用的属性高。我们相信它将满足SHM的要求。本文讨论了系统的理论模型和实验验证。

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