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Inverted Deposition and High-Velocity Spinning Technique to Develop Buried Planar Chalcogenide Glass Waveguides for Highly Nonlinear Integrated Optics

Mairaj, A K, Curry, R J and Hewak, D W (2005) Inverted Deposition and High-Velocity Spinning Technique to Develop Buried Planar Chalcogenide Glass Waveguides for Highly Nonlinear Integrated Optics Applied Physics Letters, 86 (9). ISSN 00036951

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Abstract

We report on buried planar waveguides in a highly nonlinear infrared transmitting chalcogenide glass, fabricated using a combination of inverted deposition of the molten glass phase and high-velocity spinning. Films of gallium lanthanum sulphide (Ga:La:S) glass were deposited onto an expansion coefficient matched Ga:La:S cladding substrate. These amorphous films, with an optimized composition designed to be resistant against crystallization, were observed to have an excellent interface quality and uniformity. The designed planar chip had a buried core, 6  µm thick in the vertical direction, in single-mode operation at 1.064  µm and a measured propagation loss of <0.2  dB  cm–1. Through this technique waveguides from Ga:La:S glass, a highly versatile optical semiconductor material, can potentially be used in nonlinear applications as well as provide passive and active integrated optic functionality into the infrared beyond 5  µm.

Item Type: Article
Additional Information: Published in <i>Applied Physics Letters,</i> Vol. 86. Copyright 2005 American Institute of Physics. Click <a href=http://apl.aip.org/apl/>here</a> to access the journal's website.
Divisions: Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute > Nano-Electronics Centre
Depositing User: Mr Adam Field
Date Deposited: 27 May 2010 14:05
Last Modified: 23 Sep 2013 18:25
URI: http://epubs.surrey.ac.uk/id/eprint/41

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