Highly compact polarization-independent grating coupler

被引：25

作者：

Shao, Shiqian ^{[1
]}

Wang, Yi ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China

来源：

OPTICS LETTERS | 2010年 / 35卷 / 11期

基金：

中国国家自然科学基金;

关键词：

WAVE-GUIDES; DESIGN;

D O I：

10.1364/OL.35.001834

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose a compact polarization-independent output grating coupler, which consists of T-shaped grooves. For only 20 periods on a silicon-on-insulator wafer with a 260 nm thick top silicon layer, the output coupling efficiencies for both the TE and the TM modes are larger than 50% in the wavelength range of 1480-1580 nm and are approximately 58% around 1550 nm. The polarization-dependent loss of the device is within 0: 05 dB in the range of 1510-1580 nm. (C) 2010 Optical Society of America

引用

页码：1834 / 1836

页数：3

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