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Proceedings Paper

Wideband Signal Recording And Playback With High Time-Bandwidth Product
Author(s): R. A. Coppock; R. F. Croce; R. J. Ellis; R. N. Markell
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Paper Abstract

An analog recording technique is described where an acousto-optic Bragg cell is driven by an amplitude-modulated carrier and strobed with a pulsed laser. The acoustic column of the Bragg cell is imaged onto film using the zero order diffracted light to maximize system efficiency. Performance characteristics of system components are examined relative to their impact on system bandwidth, dynamic range, and frequency resolution. A breadboard recorder was used to demonstrate the technique and results from system tests are presented. The breadboard recorder achieved a bandwidth extending from 10 to 190 MHz with a dynamic range peak to RMS exceeding 22 dB. A two-dimensional, optical processing technique is described where time-bandwidth products exceeding 106 can be achieved.

Paper Details

Date Published: 20 September 1982
PDF: 10 pages
Proc. SPIE 0390, High Speed Read/Write Techniques for Advanced Printing and Data Handling, (20 September 1982); doi: 10.1117/12.935018
Show Author Affiliations
R. A. Coppock, GTE Products Corporation (United States)
R. F. Croce, GTE Products Corporation (United States)
R. J. Ellis, GTE Products Corporation (United States)
R. N. Markell, GTE Products Corporation (United States)

Published in SPIE Proceedings Vol. 0390:
High Speed Read/Write Techniques for Advanced Printing and Data Handling
Leo Beiser, Editor(s)

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