Calculation of the coupling coefficient of two optical waveguide ends separated by layered medium

Author

Pavo, J.

Author_Institution

Dept. of Electromagn. Theory, Tech. Univ., Budapest, Hungary

Volume

28

Issue

2

fYear

1992

fDate

3/1/1992 12:00:00 AM

Firstpage

1513

Lastpage

1516

Abstract

The coupling coefficient between two optical waveguide ends which are separated by a layered medium is calculated. The coupling is determined between given modes of the waveguides. The optical beam propagating in the three-dimensional structure is represented as an angular spectrum of electromagnetic plane waves. The coupled field is calculated by fulfilling the boundary conditions for the plane wave components at the planes separating the layers. The maximum coupling is calculated by optimizing the characteristic data of the layer between the two waveguides. A two-dimensional example is presented where the attenuation is minimized by optimizing the refractive index and thickness of the separating layer. The attenuation versus the thickness of the separating layer is also calculated

Keywords

optical couplers; optical waveguide theory; refractive index; angular spectrum; attenuation; boundary conditions; coupling coefficient; electromagnetic plane waves; layered medium; optical beam; optical waveguide ends; plane wave components; refractive index; thickness; Attenuation; Electromagnetic propagation; Electromagnetic waveguides; Optical attenuators; Optical beams; Optical coupling; Optical propagation; Optical refraction; Optical variables control; Optical waveguides;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.123984

Filename

123984