期刊名称：International Journal of Soft Computing & Engineering
电子版ISSN：2231-2307
出版年度：2012
卷号：2
期号：1
页码：316-321
出版社：International Journal of Soft Computing & Engineering
摘要：an InGaAs based p-i-n photodetector model is chosen in order to find out quantum efficiency, photocurrent density, and normalized frequency response with and without RC effect. Normalized frequency response is the most important factor in order to analysis the performance of p-i-n photodetector. Quantum efficiency, photocurrent density, normalized frequency response curves are obtained by formulation which is done from structure and MATLAB simulation. A relation for the fiber-to-waveguide coupling efficiency has also been used to calculate the overall quantum-efficiency of waveguide photodetector [1]. Normalized frequency response is obtained by varying value of frequency dependent transfer function of equivalent circuit model of p-i-n photodetector with frequency. For enhancing bandwidth of photodetector, the parametric values of photodetector such as reverse bias junction capacitance and resistance, has been optimized. The effect of carrier trapping at a heterointerface has also been considered to study the frequency dependence of the photocurrent at low-bias voltages [1].
关键词：p-i-n photodetector; quantum efficiency;photocurrent density; normalized frequency response.
