Amorphous-Si waveguide on a garnet magneto-optical isolator with a TE mode nonreciprocal phase shift

被引：36

作者：

Ishida, Eiichi ^{[1
]}

Miura, Kengo ^{[1
]}

Shoji, Yuya ^{[1
,2
]}

Yokoi, Hideki ^{[3
]}

Mizumoto, Tetsuya ^{[1
,2
]}

Nishiyama, Nobuhiko ^{[1
,2
]}

Arai, Shigehisa ^{[1
,2
]}

机构：

[1] Tokyo Inst Technol, Dept Elect & Elect Engn, Meguro Ku, 2-12-1 Ookayama, Tokyo 1528552, Japan

[2] Tokyo Inst Technol, Lab Future Interdisciplinary Res Sci & Technol, Meguro Ku, 2-12-1 Ookayama, Tokyo 1528552, Japan

[3] Shibaura Inst Technol, Dept Elect Engn, Koto Ku, 3-7-5 Toyosu, Tokyo 1358548, Japan

来源：

OPTICS EXPRESS | 2017年 / 25卷 / 01期

基金：

日本学术振兴会;

关键词：

INTEGRATED OPTICAL ISOLATOR; YTTRIUM-IRON-GARNET; THIN-FILM; DESIGN;

D O I：

10.1364/OE.25.000452

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We fabricated a magneto-optical (MO) isolator with a TE mode nonreciprocal phase shift. The isolator is based on a Mach-Zehnder interferometer composed of 3-dB directional couplers, a reciprocal phase shifter, and a nonreciprocal phase shifter. To realize TE mode operation in the optical isolator, we designed a novel waveguide structure composed of a hydrogenated amorphous silicon waveguide with an asymmetric MO garnet lateral clad on a garnet substrate. The isolator operation is successfully demonstrated in a fabricated device showing the different transmittances between forward and backward directions. The maximum isolation of the fabricated isolator is 17.9 dB at a wavelength of 1561 nm for the TE mode. (C) 2017 Optical Society of America

引用

页码：452 / 462

页数：11

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