Structure optimization of a uni-traveling-carrier photodiode with introduction of a hydro-dynamic model
引入了流体动力学模型的单载流子光探测器的优化

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.