High contrast circular grating reflector on silicon-on-insulator platform

被引：18

作者：

Gao, Shitao ^{[1
,2
,3
]}

Wang, Yang ^{[1
,2
,3
]}

Wang, Ke ^{[2
,3
,4
]}

Skafidas, Efstratios ^{[2
,3
]}

机构：

[1] Natl ICT Australia Ltd NICTA Victoria, 115 Batman St, West Melbourne, Vic 3003, Australia

[2] Univ Melbourne, Dept Elect & Elect Engn, Melbourne, Vic 3010, Australia

[3] Univ Melbourne, Ctr Neural Engn, Melbourne, Vic 3010, Australia

[4] Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA

来源：

OPTICS LETTERS | 2016年 / 41卷 / 03期

基金：

澳大利亚研究理事会;

关键词：

RIB WAVE-GUIDES; BRAGG GRATINGS; LASER; PHOTONICS; FILTER;

D O I：

10.1364/OL.41.000520

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A compact circular high contrast grating (HCG) reflector with a footprint of only 4.03 mu m x 4.32 mu m on 220 nm silicon-on-insulator (SOI) platform is proposed and experimentally demonstrated. The proposed device breaks the high wavelength selectivity limitation for the conventional grating reflectors on a thin SOI platform by using the circular structure in a compact region. In addition, the device provides a high polarization selectivity over a wide wavelength range which is useful for applications such as tunable laser cavities and resonators to provide wide tuning range and high polarization stability. The circular structure based HCG reflector has an ultra-wide operational bandwidth (Delta lambda) of over 385 nm with the center wavelength (lambda) set at 1550 nm, providing a Delta lambda/lambda = 24.83%. An average reflectance high of 94.15% is observed from 1525 to 1610 nm in the experimental measurement. The polarization extinction ratio is greater than 13 dB over the entire measured wavelength range. (C) 2016 Optical Society of America

引用

页码：520 / 523

页数：4

共 23 条

[1] Silicon Photonics for Next Generation System Integration Platform [J].