基于太赫兹光非对称解复用器的全光倍频技术.PDF

第42卷 第2期 中 国 激 光 Vol.42,No.2 2015年2月 CHINESEJOURNALOFLASERS February,2015 基于太赫兹光非对称解复用器的全光倍频技术 简阳天 王 智 林 青 孙振超 吴重庆 北京交通大学理学院光信息科学与技术研究所发光与光信息技术教育部重点实验室,北京 100044 摘要 太赫兹光非对称解复用器(TOAD)是一种全光信号处理领域中常用的器件,其具有响应速度快、可集成、稳定 性好等优点。本文提出了一种基于TOAD的全光时钟倍频技术方案。通过模型仿真，模拟对TOAD输入直流光，在 时钟脉冲前后沿附近会产生双峰输出现象,以此来分析TOAD的开关特性，研究了控制光能量、开关窗口大小、半导 体光放大器增益恢复时间等因素对双峰输出特性的影响。对光时钟信号进行了全光二倍频、三倍频和四倍频的仿 真，从频谱上观察，倍频准确，并且在实验上实现了200Mb/s和1Gb/s时钟的全光二倍频，与仿真结果相符。 关键词 信号处理;全光倍频;太赫兹光非对称解复用器;光导体光放大器 图文分类号 TN929 文献标识码 A doi: 10.3788/CJL201542.0205002 AllOpticalFrequencyMultiplicationTechnologyBasedon TerahertzOpticalAsymmetricDe-Multiplexer JianYangtian WangZhi LinQing SunZhenchao WuChongqing KeyLaboratoryofLuminescenceandOpticalInformation,MinistryofEducationInstituteofOptical Information,SchoolofScience,BeijingJiaotongUniversity,Beijing 100044,China Abstract Terahertz optical asymmetric de-multiplexer (TOAD) is one of the key devices for all-optical signal processing with its fast response, good integration and stability. A scheme for all optical frequency multiplicationisproposedbasedontheTOAD.TheswitchcharacteristicsoftheTOAD arediscussedwith simulationsforbimodaloutputontheleadingandtailingedgesoftheclockpulseascontrol,inadditionwith the dependence on some factors of the TOAD, such as energy of control pulse, window of TOAD, carrier recovery time. Based on the bimodal output effects, the all-optical frequency doubling, tripling and quadrupling are simulated, and the frequency doubling of the clock is implemented with simulations and experimentsfor200Mb/sand 1Gb/sclocks.