全光伪随机码倍速关键技术  

KeyTechniques for All-Optical Repetition Rate Multiplication of Pseudorandom Bit Sequences

作　　者：孙振超[1] 王智[1] 刘岚岚[1] 张丽梅[1] 王甫[1] 刘英峰[1] 吴重庆[1] 

机构地区：[1]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

出　　处：《中国激光》2014年第1期139-144,共6页Chinese Journal of Lasers

基　　金：国家自然科学基金(61077048;61077014);高等学校博士学科点专项科研基金(20120009110032);北京市自然科学基金(4132035);中央高校基本科研业务费(2009JBM103;2012JBM103)

摘　　要：提出了基于太赫兹光非对称解复用器(TOAD)结构来实现全光伪随机码(PRBS)倍速中全光波长变换及全光或逻辑运算两项关键技术的方案。对TOAD结构的开关特性进行了理论与实验研究,并利用TOAD结构实现了10Gb/s速率的波长变换和全光或逻辑的仿真与实验。结果表明:继续减小控制脉冲宽度和开关窗口宽度,利用TOAD结构可以获得更高速率的波长变换和全光或逻辑运算;利用这两项关键技术,基于TOAD结构可实现PRBS倍速,获得更高速率的全光PRBS码流。A scheme is proposed to achieve all-optical wavelength conversion and all-optical OR-logic gate, which are two key techniques for repetition rate multiplication of pseudorandom bit sequences （PRBS） based on terahertz optical asymmetric demultiplexer （TOAD）. The switch characteristics of TOAD are discussed followed by 10 Gb/s wavelength conversion and all-optical OR-logic gate with theoretical simulations and experiments. The results indicate that the wavelength conversion and all-optical OR-logic gate can be implemented at ultra-high bit rate by this TOAD scheme if the widths of control pulse and switch window are smaller. Furthermore, all-optical PRBS with higher rate can be generated by employing both of the key techniques to achieve the repetition rate multiplication of PRBS.

关 键 词：信号处理 全光波长变换 全光或逻辑 太赫兹光非对称解复用器 伪随机码倍速 

分 类 号：TN247[电子电信—物理电子学]