Wavelength division multiplexing Fresnel transform encoding of time-varying signals

CUADRADO LABORDE, CHRISTIAN; DUCHOWICZ, RICARDO; SICRE, ENRIQUE

OPTICAL ENGINEERING

SPIE

Lugar: Washington; Año: 2008 vol. 47 p. 85004 - 85013

0091-3286

We study the wavelength division multiplexing implementation of the recentlyproposed temporal Fresnel transform encoding technique, in order to evaluate itspotential application for secure data transmission in short-haul fiber optic links. Thedifferent signal broadenings produced by each stage of the encoding process wereanalyzed in a dual time-frequency domain by using a Wigner distribution functionapproach. Furthermore, the robustness of the proposed method was illustrated also, byusing the signal-to-noise ratio between input and decrypted signals, obtained byvarying typical parameters of the encryption-decryption setup. Numerical simulationsrevealed the good system performance. Finally, we consider some issues about theexperimental feasibility with current photonic technology.