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Proceedings Paper

All-optical signal encoder-decoder for secure communications
Author(s): W. Randall Babbitt; Akash Mohan; James A. Ritcey
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Paper Abstract

Direct sequence spread spectrum (DS/SS) is often employed for non-centralized multiple access, and an added degree of system security in coherent optical communications. With advances in coherent optical processing using Spatial- Spectral Holographic (SSH) Devices, it is possible to implement an all optical encoder/decoder for M-ary phase shift keying DS/SS. We address the issue of code selection of length N code sequences drawn from an alphabet consisting of M unit length phasers and designed for a multiuser environment. The codes are selected using very fast simulated re-annealing based on the criterion of minimizing the periodic auto and cross correlation sidelobes. The all optical implementation is discussed.

Paper Details

Date Published: 1 February 1998
PDF: 12 pages
Proc. SPIE 3228, Multimedia Networks: Security, Displays, Terminals, and Gateways, (1 February 1998); doi: 10.1117/12.300906
Show Author Affiliations
W. Randall Babbitt, Montana State Univ. (United States)
Akash Mohan, Univ. of Washington (United States)
James A. Ritcey, Univ. of Washington (United States)

Published in SPIE Proceedings Vol. 3228:
Multimedia Networks: Security, Displays, Terminals, and Gateways
Louis S. Lome; V. Michael Bove; Barbara Derryberry; Clifford R. Holliday; Louis S. Lome; Vishal Markandey; Andrew G. Tescher; Bhaskaran Vasudev, Editor(s)

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