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Proceedings Paper

Broadband reconfigurable optical beam-forming systems
Author(s): Edward N. Toughlian; Henry Zmuda; Charity A. Carter
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Paper Abstract

It is shown that by applying spatial frequency dependent optical phase compensation in an optical heterodyne process, variable RF delay can be achieved over a prescribed frequency band. Experimental results that demonstrate the performance of the delay line with regard to both maximum delay and resolution over a broad bandwidth are presented. Additionally, a spatially integrated optical system is proposed for control of phased array antennas, providing mechanical stability, essentially eliminating the drift problems associated with free-space optical systems, and providing high packing density. This approach uses a class of SLM known as a deformable mirror device and leads to a steerable arbitrary antenna radiation pattern of the true time-delay type. Also considered is the ability to utilize the delay line as a general photonic signal processing element in an adaptive (reconfigurable) transversal frequency filter configuration. Such systems are widely applicable in jammer/noise canceling systems, broadband ISDN, spread spectrum secure communications and the like.

Paper Details

Date Published: 3 June 1994
PDF: 11 pages
Proc. SPIE 2216, Photonics at the Air Force Photonics Center, (3 June 1994); doi: 10.1117/12.177335
Show Author Affiliations
Edward N. Toughlian, Air Force Photonics Ctr./Rome Lab. (United States)
Henry Zmuda, Stevens Institute of Technology (United States)
Charity A. Carter, Stevens Institute of Technology (United States)

Published in SPIE Proceedings Vol. 2216:
Photonics at the Air Force Photonics Center
Andrew R. Pirich; Paul Sierak, Editor(s)

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