摘要
提出了一种包含拉曼放大和掺铒光纤激光器的远程无源传感系统。该系统中拉曼放大的剩余泵浦功率可用作掺铒光纤激光器的泵浦源,产生的激光信号作为传感信号省略了额外的传感光源。同时拉曼泵浦源又对产生的激光传感信号进行分布式放大。当传感光纤50 km时,140 mW低泵浦功率就可以得到超过50 d B高信噪比的传感信号。当传感光纤75 km时,500 mW泵浦功率可以得到大于40 dB的高信噪比的传感信号。
We propose a remote passive fiber Bragg grating(FBG)sensor system based on a Raman fiber amplifier and an Erbium doped fiber laser(EDFL).The residual pump power of Raman amplifier is used as the pump of EDFL.The laser light source caused by EDFL is used as sensor signal.At the same time,new sensor signal can be amplified by the Raman amplifier.The experimental results show that only140mW of1470nm Raman pump power achieve a stable signal with an optical signal-to-noise ratio(OSNR)over50dB when the FBG sensor is placed50km away and signal with40dB OSNR is detected when the pump is500mW and the FBG sensor is located at75km remote sensing position.
作者
迟荣华
吕涛
孙小菡
CHI Ronghua;LU Tao;SUN Xiaohan(School of Internet of Things and Software Technology,Wuxi Vocational College of Science and Technology,Wuxi Jiangsu 214068,China;National Research Center for Optical Sensing/Communications Integrated Networking,Southeast University,Nanjing 210096,China)
出处
《传感技术学报》
CAS
CSCD
北大核心
2018年第12期1931-1934,1940,共5页
Chinese Journal of Sensors and Actuators
基金
国家自然科学基金项目(61271206)
2018年江苏高校境外研修计划项目
关键词
远程无源传感系统
拉曼放大器
掺铒光纤激光器
光学信噪比
remote passive sensor system
Raman fiber amplifier
Erbium doped fiber laser
optical signal to noise ratio(OSNR)
