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A high efficiency input/output coupler for small silicon photonic devices

Masanovic, GZ, Reed, GT, Headley, W, Timotijevic, B, Passaro, VMN, Atta, R, Ensell, G and Evans, AGR (2005) A high efficiency input/output coupler for small silicon photonic devices Optics Express, 13 (19). 7374 - 7379. ISSN 1094-4087

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Abstract

Coupling light from an optical fibre to small optical waveguides is particularly problematic in semiconductors, since the refractive index of the silica fibre is very different from that of a semiconductor waveguide. There have been several published methods of achieving such coupling, but none are sufficiently efficient whilst being robust enough for commercial applications. In this paper experimental results of our approach called a Dual-Grating Assisted Directional Coupler, are presented. The principle of coupling by this novel method has been successfully demonstrated, and a coupling efficiency of 55% measured.

Item Type: Article
Divisions: Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute > Photonics
Depositing User: Symplectic Elements
Date Deposited: 07 Jul 2011 11:49
Last Modified: 08 Nov 2013 12:08
URI: http://epubs.surrey.ac.uk/id/eprint/6597

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