基于双向正交泵浦半导体光放大器结构的全光相位保持幅度再生技术

All-optical phase-preserving amplitude-regeneration technology based on bidirectional orthogonal-pumped semiconductor optical amplifier configuration

提出了一种基于双向正交泵浦半导体光放大器(SOA)的相位保持幅度再生方案,实验分析了泵浦、信号及其端面反射场之间的多重四波混频(FWM)转换过程,探索了同向场作用下的共轭光再生能力.测量了注入不同信号光功率、信号质量情况下获得的幅度噪声压缩效果以及相位输出特性,印证双向正交泵浦SOA再生器的相位保持幅度再生功能,通过实验测量得到2.2 dB的幅度噪声压缩结果.进一步通过仿真分析系统,探讨了多进制数字相位调制(MPSK)信号的工作特性,表明该再生器可在相同工作参数下支持高阶信号的再生需求.

The phase-preserving amplitude regeneration scheme based on the bidirectional orthogonal-pumped semiconductor optical amplifier(SOA)is proposed in this work.Experimental investigation into the multiple four-wave mixing(FWM)process from the pump,the signal and their corresponding reflective fields is carried out in detail.The regeneration performance obtained from the product between co-propagating fields is also discussed,including its dependence on the signal launch power and the signal quality,to quantify the amplitude regeneration and the phase preserving behaviors.The amplitude distortion is suppressed by 2.2 dB experimentally,confirming the regeneration capability of the proposed scheme.Moreover,the regeneration performance is further investigated for multiple phase shift keying(MPSK)signals through the simulation.According to the numerical results,the operational parameters of the regenerator are the same for advanced modulation formats,proving the robust operation of the proposed bidirectional orthogonal-pumped SOA configuration.