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Up-taper-based Mach-Zehnder interferometer for temperature and strain simultaneous measurement

机译:基于锥度的马赫曾德尔干涉仪,用于温度和应变的同时测量

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摘要

A novel all-fiber sensing configuration for simultaneous measurements of temperature and strain based on the up-taper Mach-Zehnder interferometer (MZI) with an in-line embedded fiber Bragg grating (FBG) is proposed and experimentally demonstrated. This configuration consists of two up-tapers fabricated by an excessive fusion splicing method and a short segment of inscribed FBG. Due to the different responses of the up-taper MZI and the FBG to the uniform variation of temperature and strain, the simultaneous measurement for these two variables could be achieved by real-time monitoring the transmission spectrum. For 0.01 nm wavelength resolution, a resolution of 0.311℃ in temperature can be achieved, and the average strain resolution is 10.07 με.
机译:提出了一种新型的全光纤传感配置,用于同时测量温度和应变,该配置基于带嵌入式光纤布拉格光栅(FBG)的Up-Taper Mach-Zehnder干涉仪(MZI)。此配置由通过过度熔接方法制造的两个上锥和短段的内接FBG组成。由于上锥形MZI和FBG对温度和应变均匀变化的不同响应,可以通过实时监控传输频谱来同时测量这两个变量。对于0.01 nm的波长分辨率,温度分辨率为0.311℃,平均应变分辨率为10.07με。

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