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http://dx.doi.org/10.4283/JMAG.2005.10.2.041

A Magneto-Optic Waveguide Isolator Using Multimode Interference Effect  

Yang, J.S. (Department of Materials Science Institute of Nanoscience and Nanotechnology, Yonsei University)
Roh, J.W. (Department of Materials Science Institute of Nanoscience and Nanotechnology, Yonsei University)
Lee, W.Y. (Department of Materials Science Institute of Nanoscience and Nanotechnology, Yonsei University)
Ok, S.H. (Photonics Research Center, Korea Institute of Science and Technology)
Woo, D.H. (Photonics Research Center, Korea Institute of Science and Technology)
Byun, Y.T. (Photonics Research Center, Korea Institute of Science and Technology)
Jhon, Y.M. (Photonics Research Center, Korea Institute of Science and Technology)
Mizumoto T. (Department of Electrical and Electronic Engineering, Tokyo Institute of Technology)
Lee,S. (Photonics Research Center, Korea Institute of Science and Technology)
Publication Information
Journal of Magnetics / v.10, no.2, 2005 , pp. 41-43 More about this Journal
Abstract
We have investigated an optical waveguide isolator with a multimode interference section by wafer direct bonding, operating at a wavelength $1.55\;{\mu}m$. In order to fabricate the device for monolithic integration, the wafer direct bonding between a magnetic garnet material as a cladding layer and a semiconductor guiding layer has been achieved. We found that wafer direct bonding between InP and GGG $(Gd_3Ga_5O_{12})$ is effective for the integration of a waveguide optical isolator. The isolation ratio was obtained to be 2.9 dB in the device.
Keywords
optical isolator; multimode interference; nonreciprocal phase shift; wafer bonding;
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