论文信息 - TLM-based FDTD modelling of optical bistability

TLM-based FDTD modelling of optical bistability

The TLM-based FDTD method is extended to the modelling of optical bistability caused by the saturable Kerr-effect of a GaAs–GaAsAl multiple quantum well (MQW) like medium. This structure is one of the possible candidates to be used as an all-optical switch in high-speed communication systems. The purpose of this paper is to demonstrate the capability of the TLM-based FDTD method in handling the non-linear medium problems, by performing a time-domain simulation starting from the basic equations that represent the problem. A recursive formulation is derived to account for the saturable Kerr properties of the material and a physically realizable Fabry–Perot cavity is simulated. The numerical results confirm the effectiveness of the TLM-based FDTD method for bistability modelling, and thus provide the foundations for further work and the simulation of more complicated and realistic bistable structures promising for high-speed all-optical digital signal processing. Copyright © 2001 John Wiley & Sons, Ltd.

Zhizhang Chen | Tomislav Hruskovec

[1] R. Lai,et al. A 94-GHz 130-mW InGaAs/InAlAs/InP HEMT high-power MMIC amplifier , 1997, IEEE Microwave and Guided Wave Letters.

[2] Z. Chen,et al. The generalized TLM-based FDTD-summary of recent progress , 1997 .

[3] H. Gibbs,et al. Optical nonlinearity, bistability, and signal processing in semiconductors , 1985 .

[4] Zhizhang Chen,et al. Numerical implementations of PML boundary conditions in the TLM-based SCN FDTD grid , 1997 .

[5] M. Teich,et al. Fundamentals of Photonics , 1991 .

[6] Dennis M. Sullivan,et al. Nonlinear FDTD formulations using Z transforms , 1995 .

[7] Michael Cada,et al. Exact analytic solutions to the nonlinear wave equation for a saturable Kerr-like medium: modes of nonlinear optical waveguides and couplers , 1994 .

[8] Zhizhang Chen,et al. The generalized TLM-based FDTD modeling of frequency-dependent and anisotropic media , 1998 .

[9] Zhizhang Chen,et al. Numerical validations of a nonlinear PML scheme for absorption of nonlinear electromagnetic waves , 1998 .

[10] D. Miller,et al. Room temperature excitonic nonlinear absorption and refraction in GaAs/AlGaAs multiple quantum well structures , 1984 .

[11] Hyatt M. Gibbs,et al. Optical bistability in semiconductors , 1979 .

[12] K. Yee. Numerical solution of initial boundary value problems involving maxwell's equations in isotropic media , 1966 .