Broadband reconfigurable optical beam-forming systems

Edward N. Toughlian; Henry Zmuda; Charity A. Carter

doi:10.1117/12.177335

3 June 1994 Broadband reconfigurable optical beam-forming systems

Edward N. Toughlian, Henry Zmuda, Charity A. Carter

Proceedings Volume 2216, Photonics at the Air Force Photonics Center; (1994) https://doi.org/10.1117/12.177335
Event: SPIE's International Symposium on Optical Engineering and Photonics in Aerospace Sensing, 1994, Orlando, FL, United States

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.

Citation Download Citation

Edward N. Toughlian, Henry Zmuda, and Charity A. Carter "Broadband reconfigurable optical beam-forming systems", Proc. SPIE 2216, Photonics at the Air Force Photonics Center, (3 June 1994); https://doi.org/10.1117/12.177335

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KEYWORDS

Phased array optics

Antennas

Mirrors

Digital micromirror devices

Phased arrays

Digital filtering

Phase shifts

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