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Proceedings Paper

Smart photodetector arrays for error control in page-oriented optical memory
Author(s): Maureen E. Schaffer; Pericles A. Mitkas
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Paper Abstract

Smart photodetector arrays (SPAs) have been suggested as a means to improve the performance of page-oriented optical memories (POMs). With a SPA interface, the optical data page is received by 2D arrays of 'smart' photodetector elements, replacing conventional CCDs. By integrating on-chip processing with the detector array, SPAs can be designed to perform fast parallel error control and data reduction, thereby providing a more efficient interface between the POM and the electronic host computer. In this paper, we discuss SPA requirements in terms of performance, power and scalability. We then present our design and analysis of a 0.35 micron CMOS smart photodetector array. Our implementation integrates a differential current receiver for optoelectronic signal conversion with a cluster error correction code. This approach provides for high optical sensitivity, low electrical power, and fast parallel error correction to achieve data rates of 10s to 100s of Gbits per second.

Paper Details

Date Published: 1 March 1998
PDF: 10 pages
Proc. SPIE 3240, 26th AIPR Workshop: Exploiting New Image Sources and Sensors, (1 March 1998); doi: 10.1117/12.300070
Show Author Affiliations
Maureen E. Schaffer, Colorado State Univ. (United States)
Pericles A. Mitkas, Colorado State Univ. (United States)

Published in SPIE Proceedings Vol. 3240:
26th AIPR Workshop: Exploiting New Image Sources and Sensors
J. Michael Selander, Editor(s)

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