Doped Sol-Gel Films for Silica-on-Silicon Photonic Components |
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Authors: | EM Yeatman EJC Dawnay |
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Institution: | (1) Department of Electrical and Electronic Engineering, Imperial College of Science, Technology and Medicine, Exhibition Road, SW7 2BT London, UK |
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Abstract: | Further expansion of optical communication systems depends strongly on the development of cheap component technologies for
functions such as switching, demultiplexing and amplification. Silica-on-silicon is increasingly recognised as the best approach
to low cost integrated optics for such applications, but so far the functionality is limited. The purpose of NODES, a basic
research collaboration sponsored by the European Union under the programme ESPRIT, has been to examine the application of
sol-gel to a highly functional silica-on-silicon technology. In particular, the project has investigated film processing and
characterisation, rare-earth doping for amplification, and semiconductor nanocrystallite doping for nonlinear functions. This
paper presents the background and context to this work, summarises the technical results obtained, and discusses requirements
and challenges for successful application of sol-gel in photonics. |
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Keywords: | integrated optics active optical materials nonlinear optical materials |
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