24Gb/s GaAs PHEMT激光二极管/调制器驱动器  

A GaAs PHEMT Laser/Modulator Driver for 24 Gb/s Optical Transmitters

作　　者：李文渊[1] 王志功[1] 

机构地区：[1]东南大学射频与光电集成电路研究所,南京210096

出　　处：《Journal of Semiconductors》2005年第12期2455-2459,共5页半导体学报（英文版）

基　　金：国家高技术研究发展计划资助项目(批准号:2001AA312020)~~

摘　　要：采用0.2μmGaAsPHEMT工艺设计并实现了超高速光纤通信系统用激光二极管/调制器集成驱动器电路.整个电路由带源极跟随器的两级差分放大电路、电容耦合电流放大器和输出电路组成.电路芯片面积为1.0mm×0.9mm.测试结果表明,采用单一+5V电源供电时直流功耗为1.5W,输出最高电压幅度为2.4V,电路最高工作速率高于24Gb/s,可以应用于光纤通信SDH(synchronous digitalhierarchy)传输系统.An integrated laser and optical modulator driver for ultra-high speed optic-fiber communication systems is designed and fabricated in a 0.2Mm gate length AlGaAs/InGaAs/GaAs pseudomorphic high electron mobility transistor （PHEMT） process. The circuit consists of two stages of differential amplifiers with source follower pairs,a capacitive coupled current amplifier,and an output circuit. The driver IC occupies a die area of 1.0mm×0.9mm. Under a single supply of ＋SV,the power consumption is about 1.5W. Open eye diagrams are measured at a bit rate of up to 24Gb/s with a 2.4Vp-p voltage swing. It can be used in synchronous digital hierarchy transmission systems of optic-fiber communication.

关 键 词：PHEMT 激光驱动器 放大器 光纤通信 

分 类 号：TN76[电子电信—电路与系统]