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Solid-state tracking integrated optical wireless transceivers for line-of-sight optical links

O'Brien, Dominic C., Faulkner, Grahame E., Edwards, David J., Parry, Gareth, Bellon, Jacques A., Sibley, Martin J.N., Lalithambika, Vinod A., Joyner, Valencia M., Samsudin, Rina J., Holburn, David M., Mears, Robert J. and Stavrinou, Paul N. (2004) Solid-state tracking integrated optical wireless transceivers for line-of-sight optical links. Proceedings of SPIE, 5160. pp. 153-160. ISSN 0277-786X

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Abstract

Most free-space line-of sight systems require tracking in order to keep links aligned, and in order to achieve this a number of disparate optical, optoelectronic and electronic components are required. A key factor in determining the performance of these systems is the ability to integrate these in a scalable compact fashion, and to optimise components for the somewhat distinct requirements of free-space links.A number of UK universities have been involved in a consortium that has fabricated integrated transceivers that use fully custom components optimised for an indoor free-space link application. The transmitters use arrays of Resonant Cavity LED (RCLED) devices integrated with custom CMOS driver circuitry and the necessary beamshaping optics, so that operating a particular LED in the array transmits light at a particular angle. A similar approach is taken at the receiver; light from a particular angle illuminates one element of a PIN photodiode array. This is integrated with an array of custom CMOS receivers and the necessary optics, creating a compact receiver subsystem. In this paper the components and subsystems are detailed and their application to long-distance links discussed

Item Type: Article
Additional Information: Proceedings from 'Free-Space Laser Communication and Active Laser Illumination III', San Diego, CA, USA, Monday 04 August 2003
Subjects: T Technology > T Technology (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Schools: School of Computing and Engineering
School of Computing and Engineering > Systems Engineering Research Group
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Depositing User: Briony Heyhoe
Date Deposited: 27 Nov 2008 16:39
Last Modified: 05 Dec 2008 10:03
URI: http://eprints.hud.ac.uk/id/eprint/2801

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