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Magnetooptic Waveguide Material Structures and Devices

Published online by Cambridge University Press:  10 February 2011

Chen S. Tsai  and
Jun Su
Chen S. Tsai
Affiliation:
Institute of Applied Sciences and Engineering Research, Academia Sinica, Taiwan 11529 Department of Electrical and Computer Engineering, University of California, Irvine, CA 92697
Jun Su
Affiliation:
Department of Electrical and Computer Engineering, University of California, Irvine, CA 92697
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Abstract

Recent advances in the techniques for preparation of Ce-doped yttrium iron garnet (YIG) films on gadolinium gallium garnet (GGG) and semiconductor substrates, hybrid material structures of YIG/GGG- gallium arsenide (GaAs) combination, and the resulting microwave and guided-wave magnetooptic (MO) devices are presented. For example, high-efficiency MO Bragg cell modulators using the YIG/GGG-alumina material structure have been realized using a non-uniform bias magnetic field as well as an electronic feedback. Such MO modulators are being used to construct integrated optic devices such as optical scanners, switches, and frequency shifters. Also, a wideband microwave bandstop filter with a carrier frequency tuning range as high as 2.5 to 23.0 GHz using the YIG/GGG-GaAs material structure has been realized. The same material structure can be employed to perform MO Bragg diffraction experiment at ultrahigh carrier frequencies.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 597: Symposium PP – Thin Films for Optical Waveguide Devices & Materials … , 1999 , 163
Copyright
Copyright © Materials Research Society 2000

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