Cardiff University | Prifysgol Caerdydd ORCA
Online Research @ Cardiff 
WelshClear Cookie - decide language by browser settings

Design of free-space couplers for suspended triangular nano-beam waveguides

Hadden, J. P. ORCID: https://orcid.org/0000-0001-5407-6754, Maynard, Cobi, Beggs, Daryl M. ORCID: https://orcid.org/0000-0002-2231-7514, Taylor, Robert A. and Bennett, Anthony J. ORCID: https://orcid.org/0000-0002-5386-3710 2022. Design of free-space couplers for suspended triangular nano-beam waveguides. Journal of Physics D: Applied Physics 55 (47) , 474002. 10.1088/1361-6463/ac941e

[thumbnail of pdf.pdf] PDF - Published Version
Available under License Creative Commons Attribution.

Download (5MB)
License URL: http://creativecommons.org/licenses/by/4.0
License Start date: 5 October 2022

Abstract

Photonic waveguides (WGs) with triangular cross section are being investigated for material systems such as diamond, glasses and gallium nitride, which lack easy options to create conventional rectangular nanophotonic waveguides. The design rules for optical elements in these triangular WGs, such as couplers and gratings, are not well established. Here we present simulations of elements designed to couple light into, and out of, triangular WGs from the vertical direction, which can be implemented with current angled-etch fabrication technology. The devices demonstrate coupling efficiencies approaching 50% for light focused from a high numerical aperture objective. The implementation of such couplers will enable fast and efficient testing of closely spaced integrated circuit components.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Physics and Astronomy
Additional Information: License information from Publisher: LICENSE 1: URL: http://creativecommons.org/licenses/by/4.0, Type: cc-by
Publisher: IOP Publishing
ISSN: 0022-3727
Funders: EPSRC
Date of First Compliant Deposit: 6 October 2022
Date of Acceptance: 22 September 2022
Last Modified: 02 Jan 2024 18:16
URI: https://orca.cardiff.ac.uk/id/eprint/153123

Actions (repository staff only)

Edit Item Edit Item

Downloads

Downloads per month over past year

View more statistics