A compact two-dimensional grating coupler used as a polarization splitter

被引：314

作者：

Taillaert, D ^{[1
]}

Chong, H

Borel, PI

Frandsen, LH

De La Rue, RM

Baets, R

机构：

[1] State Univ Ghent, IMEC, Dept Informat Technol, INTEC, B-9000 Ghent, Belgium

[2] Univ Glasgow, Dept Elect Engn, Glasgow G12 8LT, Lanark, Scotland

[3] Tech Univ Denmark, Res Ctr, COM, DK-2800 Lyngby, Denmark

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2003年 / 15卷 / 09期

关键词：

grating coupler; integrated optics; polarization; silicon-on-insulator (SOI);

D O I：

10.1109/LPT.2003.816671

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We demonstrate a novel polarization splitter based on a two-dimensional grating etched in a silicon-on-insulator wave-guide. The device couples orthogonal modes from a single-mode optical fiber into identical modes of two planar ridge waveguides. The extinction ratio is better than 18 dB in the wavelength range of 1530-1560 mm and the coupling efficiency is approximately 20%. The device is very compact and couples light only to transverse-electric modes of the planar waveguides. Therefore, it may be used in a polarization diversity configuration to implement a polarization insensitive photonic integrated circuit based on photonic crystal waveguides.

引用

页码：1249 / 1251

页数：3

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