Coupled-mode analysis of leaky waves in channel waveguides consisting of anisotropic material

Author

Geshiro, Masahiro ; Hotta, Masashi ; Kameshima, Tomotoshi

Author_Institution

Dept. of Electr. & Electron. Eng., Ehime Univ., Japan

Volume

41

Issue

6

fYear

1993

Firstpage

1159

Lastpage

1163

Abstract

A study of leaky waves in anisotropic circular channel waveguides consisting of uniaxial crystalline material, in which the optical axis is on the plane defined by the propagation axis and one of the transverse coordinates axes, is discussed. The analysis is based on the theory of coupled modes. Mathematical discretization of the continuum of radiation modes offers satisfactorily accurate solutions of the coupled-mode equations. The characteristics of leakage losses and the field distributions of leaky waves in a LiNbO₃ waveguide are discussed on the basis of the numerical results

Keywords

integrated optics; lithium compounds; optical couplers; optical losses; optical waveguide theory; LiNbO₃ waveguide; anisotropic material; channel waveguides; circular channel waveguides; coupled modes; field distributions; leakage losses; leaky waves; optical axis; propagation axis; transverse coordinates axes; uniaxial crystalline material; Anisotropic magnetoresistance; Coupled mode analysis; Crystalline materials; Equations; Geometrical optics; Optical losses; Optical propagation; Optical waveguide theory; Optical waveguides; Planar waveguides;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.238541

Filename

238541