Acousto-Optic Multichannel Programmable True Time Delay Lines

Shih-Chun Lin; R. Scott Boughton

doi:10.1117/12.960550

14 August 1989 Acousto-Optic Multichannel Programmable True Time Delay Lines

Shih-Chun Lin, R. Scott Boughton

Proceedings Volume 1102, Optical Technology for Microwave Applications IV; (1989) https://doi.org/10.1117/12.960550
Event: SPIE 1989 Technical Symposium on Aerospace Sensing, 1989, Orlando, FL, United States

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.

Citation Download Citation

Shih-Chun Lin and R. Scott Boughton "Acousto-Optic Multichannel Programmable True Time Delay Lines", Proc. SPIE 1102, Optical Technology for Microwave Applications IV, (14 August 1989); https://doi.org/10.1117/12.960550

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