Design and simulation of a novel CMOS superimposed photodetector  

作　　者：康玉琢 毛陆虹 肖新东 谢生 张世林 

机构地区：[1]School of Electronic Information Engineering,Tianjin University

出　　处：《Optoelectronics Letters》2012年第4期249-252,共4页光电子快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.61036002);the Natural Science Foundation of Tianjin(No.11JCZDJC15100)

摘　　要：A novel superimposed photodetector （PD） is put forward. The photodetector can obtain a couple Of differential photocur- rent signals from one input optical signal. The light injection efficiency and the vertical work distance of this new.photode- tector are much higher than those of the others. The superimposed photodetctor is designed based on the standard 0.18 p.m CMOS process. The responsivity, bandwidth and transient response of the photodetector are simulated by a commercial simulation software of ATLAS. The responsivities of two obtained photocurrent signals are 0.035 A/W and 0.034 A/W, while the bandwidths are 3.8 GHz and 5.2 GHz, respectively. A full differential optical receiver which uses the superim- posed photodetector as input is simulated. The frequency response and 4 Gbit/s eye diagram of the optical receiver are also obtained. The results show that the two output signals can be used as the differential signal.

关 键 词：BANDWIDTH CMOS integrated circuits Computer software Frequency response 

分 类 号：TN36[电子电信—物理电子学]