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Proceedings Paper

An integrated optical control and communication system for free-space environments
Author(s): Xian Jin; Jason E. Barg; Jonathan F. Holzman
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Paper Abstract

A corner-cube-based integrated retroreflective structure is introduced as a novel instrument for free-space optical (FSO) communications. The structure is composed of three independent and mutually-orthogonal silicon photodiodes (PDs) and is shown to have capabilities for real-time optimization and control by way of differential photocurrent sampling between adjacent PDs. A balanced system with minimal differential signal levels is ultimately indicative of perfect optical alignment and differential triangulation is used to obtain this optimized alignment. Such a scenario is ideallysuited to bi-directional FSO communication links with the fundamental requirements for optical retroreflection, detection, and modulation. Both active downlink and passive uplink FSO communications are demonstrated.

Paper Details

Date Published: 26 November 2009
PDF: 10 pages
Proc. SPIE 7506, 2009 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments, 75060M (26 November 2009); doi: 10.1117/12.837999
Show Author Affiliations
Xian Jin, Univ. of British Columbia Okanagan (Canada)
Jason E. Barg, Univ. of British Columbia Okanagan (Canada)
Jonathan F. Holzman, Univ. of British Columbia Okanagan (Canada)


Published in SPIE Proceedings Vol. 7506:
2009 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments
Yongtian Wang; Yunlong Sheng; Kimio Tatsuno, Editor(s)

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