Cavity-resonator-integrated grating input/output coupler for high-efficiency vertical coupling with a small aperture

被引：31

作者：

Kintaka, Kenji ^{[1
]}

Kita, Yuki ^{[2
]}

Shimizu, Katsuya ^{[2
]}

Matsuoka, Hitoshi ^{[2
]}

Ura, Shogo ^{[2
]}

Nishii, Junji ^{[1
,3
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Photon Res Inst, Tsukuba, Ibaraki 3058568, Japan

[2] Kyoto Inst Technol, Dept Elect, Sakyo Ku, Kyoto 6068585, Japan

[3] Hokkaido Univ, Reseach Inst Elect Sci, Kita Ku, Sapporo, Hokkaido 0010021, Japan

来源：

OPTICS LETTERS | 2010年 / 35卷 / 12期

基金：

日本科学技术振兴机构;

关键词：

FILM WAVE-GUIDE; OPTICAL-FIBER; SIGNAL TRANSMISSION; COMPACT; INTERCONNECTION;

D O I：

10.1364/OL.35.001989

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A cavity-resonator-integrated grating input/output coupler (CRIGIC) is designed to operate at about 850 nm wavelength for high-efficiency vertical coupling of a guided wave and a free-space wave with a small aperture. The CRIGIC consists of a grating coupler and a waveguide cavity resonator constructed by two distributed Bragg reflectors. A coupling efficiency of 96% with a 3 dB bandwidth of 1: 2 nm is predicted by a theoretical calculation. An output coupling efficiency of about 60% is experimentally demonstrated on a 20 mu m aperture device, fabricated in a thin-film SiO(2)-based waveguide on a substrate with an Au reflection layer, for what we believe to be the first time. (C) 2010 Optical Society of America

引用

页码：1989 / 1991

页数：3

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