Enhancing confidentiality protection for ZCZ-OCDMA network using line selection and wavelength conversion based on SOA

Abstract

The physical layer of an optical network is vulnerable towards various types of security threats such as physical infrastructure attacks and eavesdropping, where the security item requires more attention in front of the dramatically grows in network capacity. In this paper, authors propose a comparison in performance of zero correlation zone-Optical Code Division Multiple Access based on different confidentiality mechanisms implemented using existing optical logic components such as line selectors, wavelength convertors and XOR gates. The performance of the proposed designs in terms of log of the bit error rate (BER) as function of the received power was evaluated through OptiSystem software simulation. The achieved results demonstrate that design 3 is the best confidentiality solution in terms of received power, BER performance and architecture complexity.

Opto-Electronics Review

“…On the other hand, to enhance channel data rate and increase the number of users, combining of spectral amplitude coding OCDMA (SAC-OCDMA) system with other techniques such as subcarrier multiplexing (SCM) [6] and orthogonal frequency-division multiplexing (OFDM) [7] is required. Also, in the last few years, studies have shown that OCDMA network infrastructure is vulnerable towards several types of security attacks, such as eavesdropping where the safety component needs further safety requirements in the face of dramatic increases in network capacity [8,9]. Nonetheless, OCDMA system performance is limited by a multiple access interference (MAI) impact.…”