• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Selected Topics in Quantum Electronics, IEEE Journal of >Noise Suppression Mechanisms in Regenerators Based on XGC in an SOA With Subsequent Optical Filtering
【24h】

Noise Suppression Mechanisms in Regenerators Based on XGC in an SOA With Subsequent Optical Filtering

机译：带有后续光学滤波的SOA中基于XGC的蓄热器噪声抑制机制

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A theoretical model is presented to analyze the noise suppression characteristics in cross-gain-compression (XGC)-based regenerators, where an optical bandpass filter (BPF) is cascaded after a semiconductor optical amplifier (SOA). Analytical expressions of variance are obtained for in-phase and quadrature noises after SOA and after filter. The result shows that the physical mechanism behind XGC-based noise suppression is that gain change in the SOA is out of phase with the input power fluctuation, which leads to a negative cross-correlation term in the expression of in-phase noise variance at SOA output. On the other hand, nonlinear phase noise introduced by refractive index change in the SOA will contributes to quadrature noise, which is proportional to the square of the linewidth enhancement factor ~ αN2. It is proposed that a slightly blue-shifted optical BPF can convert phase/quadrature noise-related frequency chirp into amplitude fluctuation that can cancel a part of the amplitude fluctuation after SOA, thus lead to further reduction of in-phase noise. This mechanism can be used to alleviate the negative effect of SOA-induced nonlinear phase noise and enhance the overall noise suppression performance of XGC-based regenerators, which is experimentally and numerically demonstrated at 10 Gbit/s.
机译：提出了一个理论模型来分析基于交叉增益压缩（XGC）的再生器中的噪声抑制特性，其中，在半导体光放大器（SOA）之后级联一个光学带通滤波器（BPF）。获得了SOA之后和滤波器之后的同相和正交噪声的方差分析表达式。结果表明，基于XGC的噪声抑制的物理机制是SOA中的增益变化与输入功率波动异相，这导致SOA的同相噪声方差表达为负互相关项输出。另一方面，由SOA中的折射率变化引入的非线性相位噪声将导致正交噪声，该正交噪声与线宽增强因子〜αN 2 的平方成正比。提出了稍微蓝移的光学BPF可以将与相位/正交噪声相关的频率convert转换为幅度波动，该幅度波动可以抵消SOA之后的一部分幅度波动，从而导致同相噪声的进一步减小。该机制可用于减轻SOA引起的非线性相位噪声的负面影响，并增强基于XGC的再生器的总体噪声抑制性能，这在10 Gbit / s的速度上得到了实验和数值验证。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号