为了全面了解级联双光纤光栅(CFG)传感器的研究现状, 从测量温度、应变和折射率的传感应用出发, 详细介绍和对比了级联双光纤布喇格光栅(FBG)、级联双长周期光纤光栅(LPG)以及级联LPG+FBG这3种CFG传感器, 总结出了现阶段CFG传感器的技术优势和存在的难点, 最后对CFG传感器的技术发展进行了展望。

In order to fully understand the research status of cascaded double fiber Bragg grating(CFG) sensor, from the measurement of temperature, strain and refractive index sensor application, the cascaded double Fiber Bragg grating(FBG), cascaded double long period fiber grating(LPG) and cascaded LPG+FBG three CFG sensors are introduced and compared in detail. Summarized the technical advantages and difficulties of CFG sensor at the present stage, finally, the development of CFG sensor technology is prospected.