Time-variant signal encryption by lensless dual random phase encoding applied to fiber optic links
Optics Letters, Vol. 32, Issue 19, pp. 2867-2869 (2007)
http://dx.doi.org/10.1364/OL.32.002867
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Abstract
A lensless dual random phase encoding technique in the temporal domain is proposed and analyzed to evaluate its potential application for secure data transmission, mainly for short-haul fiber optic links. The different signal broadening effects produced by each stage of the encoding process in both time and frequency domains are analyzed by using the Wigner distribution function to take into account the fiber's multiplexing capabilities. Thus, quasi-white noise with a well-defined bandwidth is used in the encoding process to limit the bandwidth of the encrypted signal. Numerical simulations revealed good system performance, indicating that this multiplexing encryption method could be a good alternative to other well-established techniques.
© 2007 Optical Society of America
OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.4230) Fiber optics and optical communications : Multiplexing
(060.5060) Fiber optics and optical communications : Phase modulation
ToC Category:
Fiber Optics and Optical Communications
History
Original Manuscript: June 11, 2007
Revised Manuscript: August 14, 2007
Manuscript Accepted: August 29, 2007
Published: September 27, 2007
Citation
Christian Cuadrado-Laborde, "Time-variant signal encryption by lensless dual random phase encoding applied to fiber optic links," Opt. Lett. 32, 2867-2869 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-19-2867
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