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Proceedings Paper

Maximizing receiver misalignment tolerance in a hybrid wireless system
Author(s): Peter G. LoPresti; Casey Kiister; Sarah Spaunhorst; Hazem Refai
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Paper Abstract

In this work, we investigate possible designs for a free-space infrared optical receiver for use in a hybrid optical-RF network with airborne platforms. Due to the relative instability of the platforms compared to traditional building placements, the receiver must possess much greater tolerance to misalignment with respect to the receiver. The limited size and payload of the airborne platforms restricts the design process. We present the results of both experimental and theoretical studies of a range of receiver designs, including single lens receivers with fiber bundles for light collection and multiple lens receivers with bundles coupled to each lens. The results show that the combination of a short focal length lens coupled to a bundle constructed from large core fibers provides the best tolerance to both angular and transverse misalignment. This result, combined with the need to collect light from a relatively large area to meet link budgets, favors a design comprised of multiple lenses of shorter focal length and smaller size, with a small bundle coupled to each lens.

Paper Details

Date Published: 18 April 2008
PDF: 8 pages
Proc. SPIE 6951, Atmospheric Propagation V, 69510N (18 April 2008); doi: 10.1117/12.777442
Show Author Affiliations
Peter G. LoPresti, Univ. of Tulsa (United States)
Casey Kiister, Univ. of Tulsa (United States)
Sarah Spaunhorst, Univ. of Tulsa (United States)
Hazem Refai, Univ. of Oklahoma (United States)

Published in SPIE Proceedings Vol. 6951:
Atmospheric Propagation V
G. Charmaine Gilbreath; Linda M. Wasiczko, Editor(s)

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