Phase matching in magneto-optic YIG films by waveguide temperature control

2 March 1989

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 25 (5) , 297-298
https://doi.org/10.1049/el:19890207

Abstract

We have demonstrated the tuning of linear birefringence in magneto-optic planar thin-film waveguides by temperature adjustment. Using this method, phase matching between coupled TE₀ and TM₀ modes, a necessary condition for the integrated optical isolator based on mode conversion, has been obtained at λ = 1.52 µm in bilayer gadolinium galliumsubstituted YIG films. The waveguide temperature was 85°C. Moreover, the phase-matching temperature can be modified by a slight variation of gadolinium and gallium substitutions as shown by a phase matching observed in a waveguide at room temperature.

Keywords

1.52 MICRON
85 DEGC
MODE CONVERSION
GDGG
INTEGRATED OPTICAL ISOLATOR
TM0 MODES
PHASE-MATCHING TEMPERATURE
ROOM TEMPERATURE
MAGNETO-OPTIC PLANAR THIN-FILM WAVEGUIDES
LINEAR BIREFRINGENCE
WAVEGUIDE TEMPERATURE CONTROL
TUNING
GDGA5O12
TE0 MODES
PHASE MATCHING

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