Title :
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
fDate :
2/1/1990 12:00:00 AM
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;
Journal_Title :
Lightwave Technology, Journal of
