Design of a transversal equalizer for electronic dispersion compensation in optical communication links  

作　　者：高振斌 石勇 王博 曾祥烨 

机构地区：[1]Information Engineering Department,Hebei University of Technology [2]Tianjin Integrated Circuit Design Center

出　　处：《Optoelectronics Letters》2011年第1期37-40,共4页光电子快报（英文版）

基　　金：supported by the Natural Science Foundation of Hebei Province (No.F2008000116)

摘　　要：A programmable transversal equalizer for electronic dispersion compensation(EDC) in optical fiber communication systems is developed.Based on the SiGe technology with a cut-off frequency of 80 GHz,the equalizer consists of 6 seriesparallel amplifiers as delay units and 7 Gilbert variable gain amplifiers as taps,which ensure that the equalizer can work at the bit rate of 10 Gb/s.With different tap gains,the forward voltage gain of the transversal equalizer varies,which demonstrates that the equalizer has various filtering characteristics such as low pass filtering,band pass filtering,band reject filtering,and notch filtering,so it can effectively simulate the inverse transfer function of dispersive channels in optical communications,and can be used for compensating the inter-symbol interference and other nonlinear problems caused by dispersion.The equalizer(including pads) occupies an area of 0.40 mm × 1.08 mm,and its total power dissipation is 400 mW with 3.3 V power supply.

关 键 词：Communication systems Dispersion compensation Electromagnetic dispersion Inverse problems Optical fibers Voltage regulators 

分 类 号：TN929.1[电子电信—通信与信息系统]