Title page for ETD etd-05042006-164534
|Type of Document
||Finite difference time domain simulation of subpicosecond semiconductor optical devices
|Elshabini-Riad, Aicha A.
|Riad, Sedki Mohamed
|Besieris, Ioannis M.
|Saed, Mohammad A.
- Semiconductor switches Mathematical models
- Finite differences
- Optoelectronic devices Mathematical models
|Date of Defense
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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