Journal
OPTICS EXPRESS
Volume 26, Issue 20, Pages 26242-26256Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.26.026242
Keywords
-
Categories
Funding
- National Research Foundation Singapore
- Research Grant of CRP-15th Piezoelectric Photonics Using CMOS Compatible AlN Technology for Enabling the Next Generation Photonics ICs and Nanosensors at National University of Singapore [NRF-CRP001-019]
- NRF-ISF [NRF2015-NRF-ISF001-2620 NUS]
- National Natural Science Foundation of China [61474078]
Ask authors/readers for more resources
A grating coupler is an essential building block for compact and flexible photonics integration. In order to meet the increasing demand of mid-infrared (MIR) integrated photonics for sensitive chemical/gas sensing, we report a silicon-on-insulator (S01) based MIR subwavelength grating coupler (SWGC) operating in the 3.7 mu m wavelength range. We provide the design guidelines of a uniform and apodized SWGC, followed by numerical simulations for design verification. We experimentally demonstrate both types of SWGC. The apodized SWGC enables high coupling efficiency of -6.477 dB/facet with 3 dB bandwidth of 199 nm, whereas the uniform SWGC shows larger 3dB bandwidth of 263.5 nm but slightly lower coupling efficiency of -7.371 dB/facet. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available
Share Paper
