隔离器
钇铁石榴石
材料科学
光隔离器
铁氧体(磁铁)
钴
钴铁氧体
硅
光电子学
光子学
波长
光学
电子工程
冶金
复合材料
光纤
物理
工程类
作者
Megumi Yanaga,Yuya Shoji,Yota Takamura,Shigeki Nakagawa,Tetsuya Mizumoto
标识
DOI:10.7567/apex.8.082201
摘要
In the telecom wavelength range, the magnetooptical effect of cobalt ferrites is approximately 10 times larger than that of conventional magnetooptical materials such as yttrium iron garnets. In this study, we focus on an application of cobalt ferrite to a magnetooptical isolator that is to be miniaturized and made suitable for integration. First, we prepare polycrystalline cobalt ferrite films deposited on a silicon substrate using a MgO buffer layer. Next, we fabricate a waveguide optical isolator of silicon waveguides by the partial deposition of the cobalt ferrite films. An optical isolation ratio of 5.5 dB is demonstrated.
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