基于啁啾光纤光栅激光器的温度传感特性  

Temperature Sensor Based on Chirped Fiber Bragg Grating Laser

作　　者：罗章 何巍[1,2] 董明利[1,2] 张雯[1,2] LUO Zhang;HE Wei;DONG Ming-li;ZHANG Wen(Key Laboratory of The Ministry of Education for Optoelectronic Measurement Technology and Instrument, Beijing Information Science and Technology University, Beijing 100192, China;Beijing Laboratory of Optical Fiber Sensing and Systems, Beijing Information Science and Technology University, Beijing 100192, China)

机构地区：[1]北京信息科技大学光电测试技术及仪器教育部重点实验室,北京100192 [2]北京信息科技大学光纤传感与系统北京实验室,北京100192

出　　处：《发光学报》2021年第12期1928-1935,共8页Chinese Journal of Luminescence

基　　金：国家自然科学基金(52105540,62105038);高等学校学科创新引智计划(先进光电子器件与系统学科创新引智基地)(D17021)资助项目。

摘　　要：提出并设计了一种环形腔掺铒光纤激光用于温度传感的方法。利用啁啾光纤光栅进行光学滤波,结合未泵浦掺铒光纤作为可饱和吸收体稳频,实现了环形腔掺铒光纤激光器单波长激光输出。通过温度变化实验,实现了单波长激光输出的温度传感测量。泵浦源输出功率为219 mW时,实现了1555.25 nm单波长激光输出,3 dB线宽为0.06 nm,边摸抑制比为47.05 dB。实验中对1555.25 nm单波长激光进行稳定性测试,10 min内激光输出功率变化为0.59 dB。利用温度加热平台对啁啾光纤光栅进行升降温实验,升温过程温度灵敏度为12.59 pm/℃,线性度为0.9986,降温过程温度灵敏度为12.58 pm/℃,线性度为0.9983。不同温度条件下对激光进行稳定性测试,在10 min监测时间范围内,50℃和300℃激光输出功率变化分别为0.27 dB和0.09 dB。An annular cavity erbium-doped fiber laser is put forward and designed,and used in the temperature measurement.Using chirped fiber Bragg grating for optical filtering and unpumped erbium-doped fiber as saturable absorber to stabilize the frequency,the single-wavelength laser output of annular cavity erbium-doped fiber laser is realized.Through the temperature experiment,the single-wavelength laser output is realized for temperature sensing measurement.When the output power of the pump source is 219 mW,the single-wavelength laser output of 1555.25 nm is realized,3 dB linewidth is 0.06 nm,and the signal-to-noise ratio(SNR)is 47.05 dB.In the experiment,the stability of the single-wavelength laser of 1555.25 nm is tested,and the output power change is 0.59 dB during 10 min.The temperature sensitivity is 12.59 pm/℃and the linearity is 0.9986.The temperature sensitivity of the cooling process is 12.58 pm/℃,and the linearity is 0.9983.The laser stability was tested at different temperatures.During 10 min,the output powers of the laser at 50℃and 300℃are 0.27 dB and 0.09 dB,respectively.

关 键 词：光纤激光器 啁啾光纤光栅 可饱和吸收体 温度传感 

分 类 号：TN248[电子电信—物理电子学]