Characteristics of a uni-traveling-carrier photodiode （UTC-PD） are investigated. A hydro-dynamic model is introduced which takes into account the electrons＇ velocity overshoot in the depletion region, which is a mo...Characteristics of a uni-traveling-carrier photodiode （UTC-PD） are investigated. A hydro-dynamic model is introduced which takes into account the electrons＇ velocity overshoot in the depletion region, which is a more accurate high speed device than using the normal drift-diffuse model. Based on previous results, two modified UTC-PDs are presented, and an optimized device is obtained, the bandwidth of which is more than twice that of the original.展开更多
基金Project supported by the National Natural Science Foundation of China(No.60736002)the National High Technology Research and Development Program of China(No.2007AA03Z408)
文摘Characteristics of a uni-traveling-carrier photodiode （UTC-PD） are investigated. A hydro-dynamic model is introduced which takes into account the electrons＇ velocity overshoot in the depletion region, which is a more accurate high speed device than using the normal drift-diffuse model. Based on previous results, two modified UTC-PDs are presented, and an optimized device is obtained, the bandwidth of which is more than twice that of the original.
