Numerical simulation of double random phase encoding

Shi Liu; Bryan M. Hennelly; John T. Sheridan

doi:10.1117/1.OE.51.12.128201

18 December 2012 Numerical simulation of double random phase encoding

Shi Liu, Bryan M. Hennelly, John T. Sheridan

Author Affiliations +

Optical Engineering, Vol. 51, Issue 12, 128201 (December 2012). https://doi.org/10.1117/1.OE.51.12.128201

Abstract

In this paper, we propose a method for the numerical simulation of optical double random phase encoding (DRPE). This method is based on a discrete model of the DRPE system that retains the properties of its optical counterpart and takes into account the capacity of DRPE to spread a signal’s energy in both the space and the spatial frequency domains. Discrete versions of two narrowband lossless diffusers are created to simulate their analogue optical counterparts and their bandwidths control how much the energy of the input signal is spread in both the space and spatial frequency domains as it passes through the system. The limiting case, when complete aliasing (maximum overlap) takes place, is also discussed in relation to our method. In this case, we show our method reduces to a purely numerical encryption procedure which can, nonetheless, be decrypted perfectly. Simulation results are presented to demonstrate the feasibility of the proposed technique.

Citation Download Citation

Shi Liu, Bryan M. Hennelly, and John T. Sheridan "Numerical simulation of double random phase encoding," Optical Engineering 51(12), 128201 (18 December 2012). https://doi.org/10.1117/1.OE.51.12.128201

Published: 18 December 2012

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