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Measurement of optical nonreciprocal phase shift in a bi-substituted Gd3Fe5O12film and application to waveguide-type optical circulator

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4 Author(s)
Mizumoto, T. ; Tokyo Institute of Technology, Meguru-ku, Tokyo, Japan ; Oochi, K. ; Harada, T. ; Naito, Yoshiyuki

An waveguide-type optical circulator can be constructed with an optical nonreciprocal phase shifter and 3-dB directional couplers. We have measured nonreciprocal phase shift in a Bi-substituted Gd3Fe5O12(abbreviated as Bi:GdIG) thin film. It is shown that the optical circulator of several millimeters length can be realized by using Bi:GdIG.

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Lightwave Technology, Journal of  (Volume:4 ,  Issue: 3 )