Self-switching in hollow waveguides with a Kerrlike nonlinear permittivity

Author

Ogusu, Kazuhiko

Author_Institution

Dept. of Electr. Eng., Shizuoka Univ., Hamamatsu, Japan

Volume

8

Issue

10

fYear

1990

fDate

10/1/1990 12:00:00 AM

Firstpage

1541

Lastpage

1547

Abstract

The dispersion relations, stability, and excitation of the stationary nonlinear transverse electric (TE) waves guided by a nonlinear hollow waveguide are examined numerically. This waveguide consists of a self-focusing nonlinear film bounded by two identical linear claddings of the higher refractive index. Since a minimum power for guidance of the stationary waves always exists, the nonlinear hollow waveguide acts as a lower threshold device. A stability analysis using the beam propagation method shows that all the stationary TE_n modes, including the asymmetric TE₀ mode, are stable on the positively sloped branch (dP/dβ>0) of the nonlinear dispersion curve. The lower threshold device using the nonlinear hollow waveguide exhibits very sharp power-switching characteristics, and the required device length is fairly short

Keywords

optical Kerr effect; optical dispersion; optical switches; optical waveguide theory; optical waveguides; permittivity; Kerrlike nonlinear permittivity; asymmetric TE₀ mode; beam propagation method; device length; dispersion relations; hollow waveguides; linear claddings; lower threshold device; nonlinear dispersion curve; nonlinear waveguides; positively sloped branch; refractive index; self-focusing nonlinear film; sharp power-switching characteristics; stability analysis; stationary TE_n modes; stationary nonlinear TE wave excitation; Hollow waveguides; Nonlinear optical devices; Nonlinear optics; Optical films; Optical refraction; Optical variables control; Optical waveguides; Permittivity; Stimulated emission; Tellurium;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.59194

Filename

59194