Analysis of Y-branching optical circulator using magnetooptic medium as a substrate

Author

Matsubara, K. ; Yajima, H.

Author_Institution

Electrotech. Lab., Ibaraki, Japan

Volume

9

Issue

9

fYear

1991

fDate

9/1/1991 12:00:00 AM

Firstpage

1061

Lastpage

1067

Abstract

A slab-type Y-branching optical circulator is proposed and analyzed. Its operation is based on the difference in the propagation constants of the modes with opposite propagation directions in the nonreciprocal waveguide. This circulator uses a magnetooptic material as a substrate of the nonreciprocal waveguide to enhance the difference in the propagation constants. The configuration may reduce the propagation loss due to the absorption of the magnetooptic material. Calculations of the transverse magnetic-field distributions in the waveguide show a circulator property of the Y-branching waveguide. The effect of the magnitude of the magnetooptic activity on this property is discussed

Keywords

magneto-optical devices; optical waveguide components; substrates; Y-branching optical circulator; magnetooptic activity; magnetooptic medium; nonreciprocal waveguide; propagation constants; propagation loss; slab-type; substrate; transverse magnetic-field distributions; Absorption; Magnetic analysis; Magnetic materials; Magnetic properties; Magnetooptic effects; Optical materials; Optical propagation; Optical waveguides; Propagation constant; Propagation losses;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.85801

Filename

85801