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Proceedings Paper

Acousto-Optic Multichannel Programmable True Time Delay Lines
Author(s): Shih-Chun Lin; R. Scott Boughton
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Paper Abstract

An acousto-optic multichannel programmable time-delay device using a multichannel Bragg cell is proposed. The key is to illuminate the Bragg cell with a narrow optical beam. Absolute time delays can be changed by varying the distance between the optical beam and the transducer plane, while differential delays across the channels can be obtained by rotating the optical beam about its optical axis. Various ways for embodiment of the concept are given for both discrete and continuous delays. Experimental verification has been carried out with both direct detection and heterodyne detection. Delays ranging from a fraction of a nanosecond to a few microseconds are possible. The delay line device can be used in many broadband applications in communications, radar, and signal processing systems.

Paper Details

Date Published: 14 August 1989
PDF: 14 pages
Proc. SPIE 1102, Optical Technology for Microwave Applications IV, (14 August 1989); doi: 10.1117/12.960550
Show Author Affiliations
Shih-Chun Lin, The Aerospace Corporation (United States)
R. Scott Boughton, The Aerospace Corporation (United States)

Published in SPIE Proceedings Vol. 1102:
Optical Technology for Microwave Applications IV
Shi-Kay Yao, Editor(s)

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