一种表征EDFA放大宽谱光源的噪声估测方法
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摘要
光纤放大器作为分布式光纤传感系统实现超长距离、超低损耗传输必不可少的光学器件,其噪声特性对于系统整体性能有着至关重要的影响。微分干涉型分布式光纤传感系统中必须使用宽谱光源,同时探测终端也需采用宽谱探测,因此研究EDFA在宽光谱系统中的噪声对于传感系统整体性能的提升有着重要意义。文中研究了EDFA增益对宽谱光源波长与功率的响应关系,得出了可描述这一关系的增益响应曲线,并依此提出了一种可表征EDFA放大宽谱光源的噪声的估测方法,总结了EDFA放大宽谱光源时的噪声规律。
Optical fiber amplifier is an indispensable optical device in distributed sensing system to realize ultra-long-distance, ultra-low loss transmission. The noise characteristics of amplifier have a vital impact on the overall performance of the distributed sensing system. In the differential interference distributed sensing system, the broadband spectrum light source must be used, and the detection terminal must also use the wide spectrum detection, so it was of great significance to study the noise of EDFA in the broadband spectrum distributed sensing system for the improvement of the overall performance of the sensing system. The response relation of EDFA gain to the wavelength and power of the broadband spectrum light source was studied in this paper, and the gain response curve that can describe this relation was obtained. Based on this curve, an estimation method that can characterize the noise of the broadband spectrum light source amplified by EDFA was proposed, and the noise rule of EDFA amplified broadband spectrum light source was summarized.
Optical fiber amplifier is an indispensable optical device in distributed sensing system to realize ultra-long-distance, ultra-low loss transmission. The noise characteristics of amplifier have a vital impact on the overall performance of the distributed sensing system. In the differential interference distributed sensing system, the broadband spectrum light source must be used, and the detection terminal must also use the wide spectrum detection, so it was of great significance to study the noise of EDFA in the broadband spectrum distributed sensing system for the improvement of the overall performance of the sensing system. The response relation of EDFA gain to the wavelength and power of the broadband spectrum light source was studied in this paper, and the gain response curve that can describe this relation was obtained. Based on this curve, an estimation method that can characterize the noise of the broadband spectrum light source amplified by EDFA was proposed, and the noise rule of EDFA amplified broadband spectrum light source was summarized.
引文
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[2]Zhang Ye,Jia Bo,Tang Huang,et al.Fiber-optic security system-application of a novel security system in campus construction[J].Research and Exploration in Laboratory,2010,29(2):177-180.(in Chinese)
[3]Ou Jinping.Research and practice of smart sensor net works and health monitoring systems for civilin frastructures in mainland China[J].Bulletin of National Natural Science Foundation of China,2005,19(1):8-12.(in Chinese)
[4]Liu Xila.Funda mentalresear chonsafety and durability of major structure sincivil and hydraulic engineering[J].China Civil Engineering Journal,2001,34(6):1-7.(in Chinese)
[5]Lee B.Review of the present status of optical fiber sensors[J].Optical Fiber Technology:Materials,Devices and Systems,2003,9(2):57-79.
[6]Hong X,Guo H,Jian W,et al.An intrusion detection sensor based on coherent optical time domain reflector[J].Microwave&Optical Technology Letters,2010,52(12):2746-2748.
[7]Mohammadi M,Raahemi B,Akbari A,et al.New classdependent feature transformation for intrusion detection systems[J].Security&Communication Networks,2012,5(12):1296-1311.
[8]Li Rongwei,Li Yongtao.Application of distributed opticalsen sorinsu bmarinecable detection[J].Telecom Munications for Electric Power System,2010,31(2):45-48.(in Chinese)
[9]Hang Lijun,He Cunfu,Wu Bin,et al.Research on novel distribute doptical fiber pipeline leakage detectionte chnology and location method[J].Acta Optica Sinica,2008,28(1):123-127.(in Chinese)
[10]Xu Haiyan,Ai Xin,Wu Hongyan.Wavelet-based approach form odei dentification functionin the different ialinter ference sensor system[J].Optical Instruments,2014,36(4):305-310.(in Chinese)
[11]Tang Huang,Miao Xuan,Zhao Dong.Submarine listening based on fiber different ialinter ferometer[J].Optical Instruments,2014,36(2):107-111.(in Chinese)
[12]Yuan Shuzhong,Ge Chunfeng,Wei Zhenxing,et al.The STU dyongain flattening of EDFA[J].Acta Scientiarum Naturaliun Universitatis Nankaiensis,1999,32(4):117-118.(in Chinese)