基于光纤环形激光器的传感技术研究与应用

Research and Application of Sensing Technology based on Fiber Ring Laser

摘要:

基于光纤环形激光腔(FRL)的新一代光纤传感系统通过解调激光波长偏移检测外界参量变化,得利于激光具有窄线宽及高信噪比的特性,可实现高分辨率、大范围的动态监测。文章介绍了光纤环形激光腔传感技术的基本工作原理,综述了近几年技术最为成熟的光纤微结构传感器,包括光纤光栅、迈克尔逊干涉仪、法布里珀罗腔、萨格奈克环以及马赫曾德尔干涉仪;阐述了每种结构的原理以及在光纤传感领域的具体应用场景。最后,对基于光纤环形激光腔的光纤传感技术的发展及应用进行了总结与展望。S

Abstract:

The new generation of optical fiber sensing system based on fiber ring laser (FRL) cavity detects the changes of external parameters by demodulating the laser wavelength shift, which benefits from the characteristics of narrow linewidth and high signal-to-noise ratio of the laser, and can realize high-resolution and large-scale dynamic monitoring. This paper introduces the basic working principle of fiber ring laser cavity sensing technology, and summarizes the most mature fiber microstructure sensors in recent years, including fiber grating, Michelson interferometer (MI), Fabry Perot (FP) cavity, Sagnac loop and Mach Zehnder interferometer (MZI); The principle of each structure and the specific application scenarios in the field of optical fiber sensing are described. Finally, the development and application of optical fiber sensing technology based on fiber ring laser cavity are summarized and prospected.