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半导体光放大器引起的串扰及其抑制技术
引用本文:管爱红,张德贤,孙军强.半导体光放大器引起的串扰及其抑制技术[J].光学学报,2008,28(8):1445-1449.
作者姓名:管爱红  张德贤  孙军强
作者单位:1. 河南工业大学信息学院,河南,郑州,450001
2. 华中科技大学武汉光电国家实验室,湖北,武汉,430074
摘    要:由于半导体光放大器(SOA)的增益饱和效应,在波分复用系统中.每个信道的增益受到复用的其它信道的影响.SOA引起的各信道之间的串扰严重限制了其应用.理论研究了SOA增益饱和效应引起的信道间串扰.数值模拟了多路信道复用时系统的误码率随复用信道数和光功率的变化情况,发现随着复用信道数的增加SOA增益饱和引起的信道间串扰越来越严重.对SOA中串扰的抑制方法进行了理论和实验研究.数值模拟发现连续光注入可以抑制输出功率的波动,从而减小误码率,当复用10个信道时,连续光注入可以使功率代价减小2 dB;实验验证了两信道的40 Gb/s系统中,注入连续光可以减少SOA引起的信道间串扰.

关 键 词:光纤通信  半导体光放大器  非线性串扰  连续光注入
收稿时间:2007/12/20

SOA Induced Crosstalk in WDM Network and Its Mitigation Techniques
Guan Aihong,Zhang Dexian,Sun Junqiang.SOA Induced Crosstalk in WDM Network and Its Mitigation Techniques[J].Acta Optica Sinica,2008,28(8):1445-1449.
Authors:Guan Aihong  Zhang Dexian  Sun Junqiang
Abstract:In a system, for the reason of gain saturation of semiconductor optical amplifiers (SOAs) the gain of a channel is influenced by other multiplexing channels, and the interchannel crosstalk limits severely the application of SOA. Theoretical study on channel crosstalk due to gain saturation in SOAs is presented. The system bit-error rate (BER) is quantified as a function of the amplifier input power and the number of channels. It is found that more multiplexing channels induce more severe crosstalk because of the gain saturation characteristic of SOAs. Crosstalk mitigation techniques in SOAs are studied theoretically and experimentally. Simulation shows that continuous wave (CW) light injection can restrain output power fluctuation and decrease BER. With ten multiplexing channels, CW light injection can reduce power loss by 2 dB. Experiment shows in a 40 Gb/s two-channel system, interchannel crosstalk caused by SOA can be restrained by CW light injection.
Keywords:optical communication  semiconductor optical amplifier  nonlinear crosstalk  continuous light injection
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