DocumentCode :
1146260
Title :
Optical chaos masking of video signals
Author :
Annovazzi-Lodi, Valerio ; Benedetti, Mauro ; Merlo, Sabina ; Norgia, Michele ; Provinzano, Biagio
Author_Institution :
Dipt. di Elettronica, Univ. di Pavia, Italy
Volume :
17
Issue :
9
fYear :
2005
Firstpage :
1995
Lastpage :
1997
Abstract :
In this letter, we report on what we believe is the first demonstration of a cryptographic technique, based on optical chaos, applied to "real world" high-frequency signals. A standard TV signal at 2.4 GHz has been transmitted through an optical fiber link. The output from a chaotic laser, added to the signal at the transmitter side, strongly reduces its signal-to-noise ratio, and prevents an eavesdropper tapping the fiber from decoding the message. At the receiver side, the signal is extracted from chaos using a master-slave synchronization scheme. This requires a pair of lasers with strictly matched parameters, which represent the hardware cryptographic key of the method.
Keywords :
cryptography; optical chaos; optical fibre communication; optical receivers; optical transmitters; synchronisation; video signal processing; 2.4 GHz; chaotic laser; cryptographic technique; eavesdropper tapping; hardware cryptographic key; high-frequency signals; master-slave synchronization; message decoding; optical chaos; optical chaos masking; optical fiber link; signal-to-noise ratio; standard TV signal; video signals; Chaos; Chaotic communication; Cryptography; Decoding; Fiber lasers; Optical fibers; Optical receivers; Optical transmitters; Signal to noise ratio; TV; Chaos; communication systems; cryptography; optical fibers;
fLanguage :
English
Journal_Title :
Photonics Technology Letters, IEEE
Publisher :
ieee
ISSN :
1041-1135
Type :
jour
DOI :
10.1109/LPT.2005.853267
Filename :
1498928
Link To Document :
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