Title :
Secure transmission over an existing public WDM lightwave network
Author :
Wu, Bernard B. ; Prucnal, PAul R. ; Narimanov, Evgenii E.
Author_Institution :
Dept. of Electr. Eng., Princeton Univ., NJ
Abstract :
We develop a spread-spectrum-based approach to security-enhanced transmission over an existing public wavelength-division-multiplexing (WDM) lightwave network. Secure transmission for a dedicated user is achieved by overlaying a covert channel onto a multichannel WDM network. The covert channel is spectrally encoded using the technique of frequency hopping and then temporally spread by a dispersive element, with the resulting average power below the noise floor in the fiber. The presence of the WDM channels provides an ad hoc security expansion and increases the difficulty for an eavesdropper to intercept and decode the secure signal
Keywords :
channel coding; optical fibre communication; spread spectrum communication; telecommunication channels; telecommunication security; wavelength division multiplexing; ad hoc security; covert channel; frequency hopping; public WDM lightwave network; security-enhanced transmission; spectral encoding; spread spectrum; wavelength division multiplexing; Cryptography; Dispersion; Frequency; Multiaccess communication; Optical fiber communication; Optical modulation; Optical receivers; Optical transmitters; WDM networks; Wavelength division multiplexing; Fiber-optics communication; optical code-division multiple-access (OCDMA); optical fiber communications and networks; wavelength-division multiplexing (WDM);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.881234
