基于光纤混沌激光FBG压力传感的实验研究  

Experimental Study on Optical Fiber Bragg Grating Pressure Sensing Based on Chaotic Fiber Laser

作　　者：张丽[1] 秦建敏[1] 侯煜[2] 

机构地区：[1]太原理工大学新型传感器与智能控制教育部与山西省重点实验室,物理与光电工程学院,太原030024 [2]中国水利水电科学研究院,北京100038

出　　处：《太原理工大学学报》2015年第3期341-346,共6页Journal of Taiyuan University of Technology

基　　金：国家自然科学基金:基于空气、冰与水物理特性差异的冰层生消过程与力学强度连续在线检测原理研究(51279122);山西省青年科技研究基金(2012021013-2)

摘　　要：基于非线性克尔效应,通过调节泵浦电流及环形腔内光的偏振状态实验验证了环形掺铒光纤激光器混沌的输出。结合光纤Bragg光栅(FBG)与环形掺铒光纤混沌激光器,利用混沌的类似detla函数特性,验证和分析了基于掺铒光纤混沌激光器的分布式光纤Bragg光栅传感系统。实验结果表明,利用参考混沌光与反射的混沌光之间的互相关特性,可以准确的判断出光栅串中每个光纤Bragg光栅的位置,通过可调谐滤波器很容易获得受压后光纤光栅中心波长的改变量。Based on the nonlinear Kerr effect,chaos output from erbium-doped fiber ring laser was verified experimentally by adjusting pump current and polarization state of light in ring cavity.Combining fiber Bragg grating（FBG）and ring chaotic fiber laser,distributed FBG sensing system based on the chaotic fiber laser was demonstrated by using chaos＇ similar properties of delta function.The experimental results show that the correlation between reference light from fiber ring laser and reflected light from FBG could precisely locate the position of each FBG.The variation of FBG wavelength induce by stress can be easily detected with tunable filter.

关 键 词：混沌 光纤BRAGG光栅 相关特性 

分 类 号：TN248[电子电信—物理电子学] TN249