利用单个半导体光放大器实现两个独立信号同时波长变换的实验研究

Experimental Research of Simultaneously Wavelength Conversions with Two Independent Signals Based on a Single Semiconductor Optical Amplifier

基于单个半导体光放大器(SOA),实现了两路独立信号(10 Gb/s)的同时波长变换。其中输入信号为消光比恶化的归零码,其"0"码具有较弱的光功率,并且偏振态与"1"码正交。利用SOA中四波混频(FWM)的强度与偏振相关特性,通过调节两路输入信号间的偏振角度,将两路信号的调制信息分别复制到了由四波混频产生的两路闲频光上。实验结果表明,输出的两路波长变换后的信号具有良好的消光比。

Based on a single semiconductor optical amplifier （SOA）,simultaneously wavelength conversions （WC） of two input data signals are accomplished. The input signals are return to zero （RZ） code with extinction ratio deterioration,the “0” code with lower optical power （not zero）,and its polarization state is orthogonal with “1” code. Using the intensity and polarization correlation characteristic of four-wave mixing on SOA,by carefully setting the polarization relationship between one signal and the other,the two modulation signals information are copied to separately the idler of four-wave mixing （FWM）. The experimental results show that the output of two-way signal with wavelengths converted has a good extinction ratio （ER）.