Title page for ETD etd-05042006-164534


Type of Document Dissertation
Author He, Jianqing
URN etd-05042006-164534
Title Finite difference time domain simulation of subpicosecond semiconductor optical devices
Degree PhD
Department Electrical Engineering
Advisory Committee
Advisor Name Title
Elshabini-Riad, Aicha A. Committee Co-Chair
Riad, Sedki Mohamed Committee Co-Chair
Besieris, Ioannis M. Committee Member
Lin, Tao Committee Member
Saed, Mohammad A. Committee Member
Safaai-Jazi, Ahmad Committee Member
Keywords
  • Semiconductor switches Mathematical models
  • Finite differences
  • Optoelectronic devices Mathematical models
Date of Defense 1993-11-05
Availability restricted
Abstract

An efficient numerical method to simulate a subpicosecond semiconductor optical switch is developed in this research. The problem under studying involves both electromagnetic wave propagation and semiconductor dynamic transport, which is a nonlinear phenomenon. Finite difference time domain (FDTD) technique is used to approximate the time dependent Maxwell's equations for full-wave analysis of the wave propagation. The dynamic transport is handled by solving the balance equations using the energy and momentum relaxation time approximation. Based on the structure of the device, a physical semi-analytical model is also developed for preliminary analysis. Simulation results in the device's subpicosecond responses including nonlinearity and overshoot. The validity of the method is verified by comparing the simulation with the published experimental results. The method can be extended to other devices as well.

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