Channel power control in optical amplifiers to mitigate physical impairment in optical network  

作　　者：ZHAO DongYan LONG KePing ZHENG YiChuan SUN Jian GONG WeiBing 

机构地区：[1]Institute of Advanced Network Technology and New Services, University of Science and Technology Beijing

出　　处：《Science China(Information Sciences)》2015年第10期114-121,共8页中国科学（信息科学）（英文版）

基　　金：supported by Research Foundation of China Mobile,and Foundation of Beijing Engineering and Technology Center for Convergence Networks and Ubiquitous Services;National Natural Science Foundation of China(Grant No.61302064);National Science Foundation for Post-doctoral Scientists of China(Grant No.2013M540862)

摘　　要：The signal quality degradation, which occurs due to the aspects of fiber attenuation, splitter switch, and amplified spontaneous noise in erbium-doped fiber amplifier, may substantially erode the performance of optical communications. Among the above-mentioned factors, the physical-layer impairments may significantly weaken the signal quality at the receiver. In this paper, the impact of both the channel power adjustment and the optical signal noise rate on the optimization of optical amplifiers over the optical propagation links is studied. Our objective is to employ a proper control strategy to effectively adjust the signal power level in the chain network. A new algorithm, which takes into account the physical-layer impairments in performance optimization, facilitates an impairment aware-proportional-integral-derivative neuron controller for improving the quality of transmission. Numerical results show that the proposed controller is capable of effectively compensating for the power impairments in optical links.The signal quality degradation, which occurs due to the aspects of fiber attenuation, splitter switch, and amplified spontaneous noise in erbium-doped fiber amplifier, may substantially erode the performance of optical communications. Among the above-mentioned factors, the physical-layer impairments may significantly weaken the signal quality at the receiver. In this paper, the impact of both the channel power adjustment and the optical signal noise rate on the optimization of optical amplifiers over the optical propagation links is studied. Our objective is to employ a proper control strategy to effectively adjust the signal power level in the chain network. A new algorithm, which takes into account the physical-layer impairments in performance optimization, facilitates an impairment aware-proportional-integral-derivative neuron controller for improving the quality of transmission. Numerical results show that the proposed controller is capable of effectively compensating for the power impairments in optical links.

关 键 词：optical devices communication system performance optical signal noise rate （OSNR） OPTIMIZATION control 

分 类 号：TN722[电子电信—电路与系统] TN929.1