Broadband 2 x 2 adiabatic 3 dB coupler using silicon-on-insulator sub-wavelength grating waveguides

被引：91

作者：

Yun, Han ^{[1
]}

Wang, Yun ^{[1
]}

Zhang, Fan ^{[1
]}

Lu, Zeqin ^{[1
]}

Lin, Stephen ^{[1
]}

Chrostowski, Lukas ^{[1
]}

Jaeger, Nicolas A. F. ^{[1
]}

机构：

[1] Univ British Columbia, Dept Elect & Comp Engn, 2332 Main Mall, Vancouver, BC V6T 1Z4, Canada

来源：

OPTICS LETTERS | 2016年 / 41卷 / 13期

基金：

加拿大自然科学与工程研究理事会;

关键词：

RESONATORS; DESIGN;

D O I：

10.1364/OL.41.003041

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on a compact, broadband, 2 x 2 adiabatic 3 dB coupler using sub-wavelength gratings (SWGs) for silicon-on-insulator waveguides. In our device, two SWG waveguides that support two transverse electric modes and have tapered waveguide widths were used to achieve an adiabatic mode evolution of the two-waveguide system for broadband 3 dB power splitting. We present results for a SWG adiabatic 3 dB coupler that has an overall coupler length of 50 mu m and achieves broadband power splitting over a 130 nm wavelength range with an imbalance of no greater than +/- 0.3 dB and with low excess losses of less than 0.5 dB. (C) 2016 Optical Society of America

引用

页码：3041 / 3044

页数：4

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