超高速全光信息处理

摘要

P比特级光交换网络的发展,要求网络在传输、复用和交换方式上具有灵活性、多样性和高效性,因此基于超高速全光信息处理的网络功能存在较大价值.利用不同光子材料非线性效应(SPMXPMFWM等)已成功实现了组播、码型变换、逻辑门等不同的全光信息处理单元技术,其中高非线性光纤以其易与现有光纤网络相融合和成本相对较低等特点而具有较大潜力.在总结光信息处理的相关研究进展的基础上,文章重点介绍了偏振复用(PDM)系统中的高速全光信息处理技术,包括基于自相位调制效应(SPM)的全光再生和基于交叉相位调制效应(XPM)的波长转换实现.%Flexible, diverse, and efficient methods of data transmission, multiplexing and exchange are necessary for all-optical networks. All-optical signal processing is highly valuable for network functionality. Multicasting, format conversion, and optical logics can be performed by various nonlinear techniques, including self phase modulation (SPM), cross-phase modulation (XPM), and four-wave mixing (FWM) in different kinds of photonic materials. Highly nonlinear optical fiber has great potential because it is easy to integrate with existing fiber networks and is relatively cheap. This paper reviews current research and highlights ali-optical signal processing techniques in polarization division multiplexed (PDIvl) systems. These techniques include SPM-based all-optical signal regeneration and XPM-based wavelength conversion.