High-efficiency broad-bandwidth subwavelength grating-based fiber-chip coupler in silicon-on-insulator

Nambiar, Siddharth and Selvaraja, Shankar Kumar (2018) High-efficiency broad-bandwidth subwavelength grating-based fiber-chip coupler in silicon-on-insulator. In: OPTICAL ENGINEERING, 57 (1).

PDF Opt_Eng_57-1_017115_2018.pdf - Published Version Restricted to Registered users only Download (2MB) | Request a copy

Abstract

We report a comprehensive study on the performance of uniform and nonuniform-based subwave-length grating couplers in a silicon-on-insulator. The two performance metrics, coupling efficiency, bandwidth enhancement, and tradeoffs are presented. We also present design parameters to achieve high-efficiency and broadband operation based on the detailed study of various loss mechanisms in the grating. Based on a detailed analysis, subwavelength grating coupler designs with efficiency as high as 84% with a 1-dB bandwidth of 50-nm and 98% with a 44-nm 1-dB bandwidth is presented. (C) 2018 Society of Photo-Optical Instrumentation Engineers (SPIE)

Item Type:	Journal Article
Publication:	OPTICAL ENGINEERING
Publisher:	SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS, 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98225 USA
Additional Information:	Copy right for the article belong to SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS, 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98225 USA
Department/Centre:	Division of Biological Sciences > Centre for Neuroscience
Date Deposited:	02 Mar 2018 14:49
Last Modified:	02 Mar 2018 14:49
URI:	http://eprints.iisc.ac.in/id/eprint/59096

Actions (login required)

View Item