Double-layered magnetooptic channel waveguide for waveguide isolator application

Author

Kaewsuriyathumrong, Santi ; Mizumoto, Tetsuya ; Mak, Honming ; Naito, Yoshiyuki

Author_Institution

Fac. of Eng., Tokyo, Japan

Volume

8

Issue

2

fYear

1990

fDate

2/1/1990 12:00:00 AM

Firstpage

177

Lastpage

182

Abstract

TE-TM mode conversion based on the nonreciprocal Faraday effect for waveguides fabricated by liquid-phase epitaxially grown (YBiCa)₃Fe₅O₁₂ films is discussed. The phase mismatch is controlled by constructing a double-layer channel waveguide with an intermediate cladding layer of refractive index slightly lower than the core. Care must be taken to compensate any birefringence of materials, e.g. stress- and growth-induced birefringence. It is shown that such a structure is effective in decreasing the effect of waveguide shape deformation on the phase-matching degree. The analysis of the double-layered channel waveguide and experimental results are described

Keywords

Faraday effect; bismuth compounds; calcium compounds; garnets; liquid phase epitaxial growth; magneto-optical devices; optical isolators; optical waveguides; yttrium compounds; (YBiCa)₃Fe₅O₁₂ films; TE-TM mode conversion; birefringence compensation; double-layer channel waveguide; double-layered channel waveguide; liquid phase epitaxial films; nonreciprocal Faraday effect; phase mismatch; phase-matching degree; waveguide shape deformation; Faraday effect; Frequency conversion; Isolators; Magnetooptic effects; Optical films; Optical frequency conversion; Optical refraction; Optical variables control; Optical waveguides; Refractive index;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.47869

Filename

47869