Development of a dual-peak FBG sensing system

本研究的目的是开发一种紧凑型FBG超声传感系统。构建了一种以FBG传感器作为谐振镜的光纤环形激光器。该系统利用传感系统中光学放大器中光增益的波长依赖性，实现了对超声波的检测。与以前提出的系统相比，所开发的系统可以以10%左右的体积、重量和成本构建。

The objective of this study is to develop a compact FBG ultrasonic sensing system. A fiber ring laser with an FBG sensor acting as a resonant mirror was constructed. This system was capable of detecting ultrasound by using the wavelength dependence of the optical gain in the optical amplifier incorporated in the sensing system. Compared with systems proposed previously, the developed system can be constructed at around 10% in size, weight and cost.