Numerical analysis of nonlinear bistable optical waveguides

Author

Rahman, B.M.A. ; Souza, J.R. ; Davies, J.B.

Author_Institution

Dept. of Electr. Electron. & Inf. Eng., City Univ., London, UK

Volume

2

Issue

4

fYear

1990

fDate

4/1/1990 12:00:00 AM

Firstpage

265

Lastpage

267

Abstract

Numerical solutions illustrating the onset of bistability and hysteresis are presented for the symmetrical step index, asymmetrical step index, and asymmetrical diffused slab nonlinear optical waveguides. Two different numerical techniques have been used independently-a finite-element method and a variational method. Both methods produce numerically stable solutions, and agreement between them is good for both increasing and decreasing total power from below or above the threshold power. The results are compared with analytical solutions for these structures. The onset and the end of the physically unstable solutions regime coincides with the two power thresholds for the increasing and decreasing powers.<>

Keywords

finite element analysis; hysteresis; optical bistability; optical waveguide theory; refractive index; variational techniques; asymmetrical diffused slab nonlinear optical waveguides; asymmetrical step index; decreasing powers; finite-element method; hysteresis; increasing powers; nonlinear bistable optical waveguides; numerically stable solutions; physically unstable solutions; symmetrical step index; threshold power; variational method; Finite element methods; Modal analysis; Nonlinear optics; Numerical analysis; Optical bistability; Optical refraction; Optical signal processing; Optical variables control; Optical waveguides; Refractive index;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.53257

Filename

53257