【摘要】 实验研究了基于分布式布喇格反射镜(Distributed Bragg Reflectors,DBR)光纤激光器结构的光纤光栅传感系统,采用可调光纤法布里-珀罗(Fabry-Perot,F-P)滤波器和光纤环行器构成的可调反射腔镜对传感光栅进行波长扫描,实现了对光纤光栅温度的传感解调。与采用宽带光源、可调光纤F-P滤波器的光纤光栅温度传感解调系统进行了对比研究。实验结果表明,采用可调光纤激光器传感解调的温度测量系统具有解调速度更快,系统稳定性更强的优点。更多还原

【Abstract】 In this paper,the fiber Bragg grating sensing system based on DBR(Distributed Bragg Reflectors)fiber laser has been established in the experiment.The adjustable mirror of the system combines adjustable fiber Fabry-Perot(F-P)filter with circulator.Which the sensing grating was scanned by the adjustable mirror,finally implemented the sensing demodulation of fiber Bragg grating temperature.Another fiber Bragg grating sensing system based on broadband light sources and adjustable fiber Fabry-Perot filter also has been established and carried on the comparative study.The results show that the tunable fiber laser with sensing demodulation of temperature measuring system has the advantages of fast demodulation speed and stable system stability.更多还原