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Integrated in‐plane mirror and multimode waveguide fabrication using 248 nm excimer laser ablation for optical interconnects on PCBs

Integrated in‐plane mirror and multimode waveguide fabrication using 248 nm excimer laser... Purpose – The purpose of this paper is to present the need, and a potential solution, for in‐plane routing of optical signals for optical‐enabled circuit boards. Design/methodology/approach – Multimode waveguides and integrated 45° in‐plane mirror structures were made in a low loss acrylate‐based photopolymer using excimer laser ablation. The fabrication of multimode waveguides and mirrors was carried out in a single laser system which minimised alignment issues. Findings – It was established that in‐plane mirror fabrication using laser ablation can be achieved and can potentially be used to define mirrors in waveguides made by other methods such as photolithography. Research limitations/implications – While the concept (integrated in‐plane mirror) was demonstrated, the viability of its deployment will depend on the results of optical loss measurements for which further research is required. Originality/value – The paper gives an overview of the design concept and fabrication steps for an in‐plane embedded mirror. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Circuit World Emerald Publishing

Integrated in‐plane mirror and multimode waveguide fabrication using 248 nm excimer laser ablation for optical interconnects on PCBs

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References (21)

Publisher
Emerald Publishing
Copyright
Copyright © 2012 Emerald Group Publishing Limited. All rights reserved.
ISSN
0305-6120
DOI
10.1108/03056121211222255
Publisher site
See Article on Publisher Site

Abstract

Purpose – The purpose of this paper is to present the need, and a potential solution, for in‐plane routing of optical signals for optical‐enabled circuit boards. Design/methodology/approach – Multimode waveguides and integrated 45° in‐plane mirror structures were made in a low loss acrylate‐based photopolymer using excimer laser ablation. The fabrication of multimode waveguides and mirrors was carried out in a single laser system which minimised alignment issues. Findings – It was established that in‐plane mirror fabrication using laser ablation can be achieved and can potentially be used to define mirrors in waveguides made by other methods such as photolithography. Research limitations/implications – While the concept (integrated in‐plane mirror) was demonstrated, the viability of its deployment will depend on the results of optical loss measurements for which further research is required. Originality/value – The paper gives an overview of the design concept and fabrication steps for an in‐plane embedded mirror.

Journal

Circuit WorldEmerald Publishing

Published: May 11, 2012

Keywords: Printed‐circuit boards; Signal processing; Optical information processing; Excimer; In‐plane mirror; Laser ablation; Optical interconnects; Polymer waveguide; Multimode; OPCB; Optical circuit board

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