光通信技术2011，Vol.35Issue(12)：46-48,3.
相干光纤通信系统对激光器线宽的要求
Laser linewidth requirements for optical coherent coummunication systems
摘要
Abstract
In this paper, by simulating the performance of the carrier phase estimation for optical coherent receivers, the laser linewidth requirements are investigated for the optical coherent systems with different modulation formats, and the mechanism of diffenrence in laser linewidth requiremtent for Star and Square 16-QAM is discussed. The simulation results show that, for a given bit rate, higher-level modulation formats can lower the line symbol rate, while requiring the narrower laser linewidth. In addition, the optimization of constellation plays an important role when the laser linewidth is considered.关键词
相干光通信/激光相位噪声/激光线宽/载波相位估计Key words
optical coherent communication/laser phase noise/laser linewidth/ carrier phase estimation分类
信息技术与安全科学引用本文复制引用
刘继红,张莹,梁猛..相干光纤通信系统对激光器线宽的要求[J].光通信技术,2011,35(12):46-48,3.基金项目
陕西省教育厅科技计划项目(11JK1006)资助. （11JK1006）
