半导体光放大器环镜的非归零信号时钟分量提取

对基于半导体光放大器非线性环镜的非归零信号时钟分量提取进行了数值模拟和实验研究。不仅采用半导体光放大器的分段模型分别对简化方案和抽运一探测方案进行了2．5Gbit／s下的数值模拟，而且实验上采用这两种方案分别将2．5Gbit／s的非归零信号转换为包含其时钟分量的相应的伪归零信号。模拟计算结果与实验结果吻合得很好。实验和模拟结果均表明：采用简化方案时转换输出的伪归零信号所包含的时钟分量的强度小于采用抽运一探测方案的情况。10Gbit／s下的模拟计算结果表明在码型效应尚能容忍的前提下简化方案工作速率的上限小于抽运一探测方案。

Clock Component Extraction of Non-Return-to-Zero Signal Using Semiconductor Optical Amplifier Loop Mirror

Clock component extraction of non-return-to-zero (NRZ) signal based on semiconductor optical amplifier (SOA) loop mirror was numerically simulated and experimentally studied. The simplified scheme as well as the pump-probe scheme were simulated at 2.5 Gbit/s using a multi-section model of SOA. And the original 2.5 Gbit/s NRZ signal was experimentally converted into the corresponding pseudo-return-to-zero (PRZ) signal that contains it's clock component using both schemes. The simulation results agreed well with the experimental ones. Both of them shows that the clock component contained in the converted PRZ signal obtained using the simplified scheme is weaker than that using the pump-probe scheme. Simulation results of 10 Gbit/s operation revealed that the upper-limit of the operation speed of the simplified scheme is lower than the pump-probe one on the condition that the patterning effect is still tolerable.