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The Scientific World Journal
Volume 2014 (2014), Article ID 243795, 10 pages
http://dx.doi.org/10.1155/2014/243795
Research Article

Four-Wave Mixing Crosstalk Suppression Based on the Pairing Combinations of Differently Linear-Polarized Optical Signals

1Centre for Communication Services Convergence Technologies, College of Engineering, Universiti Tenaga Nasional, Jalan Ikram-Uniten, 43000 Kajang, Malaysia
2Faculty of Engineering, Sohar University, P.O. Box 44, PCI 311 Sohar, Oman
3School of Computer Engineering, University Malaysia Perlis, Malaysia, 02600 Arau, Perlis, Malaysia

Received 11 November 2013; Accepted 24 December 2013; Published 4 May 2014

Academic Editors: N. Zhao and W. Zou

Copyright © 2014 Haider Abd et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A new approach to suppressing the four-wave mixing (FWM) crosstalk by using the pairing combinations of differently linear-polarized optical signals was investigated. The simulation was conducted using a four-channel system, and the total data rate was 40 Gb/s. A comparative study on the suppression of FWM for existing and suggested techniques was conducted by varying the input power from 2 dBm to 14 dBm. The robustness of the proposed technique was examined with two types of optical fiber, namely, single-mode fiber (SMF) and dispersion-shifted fiber (DSF). The FWM power drastically reduced to less than −68 and −25 dBm at an input power of 14 dBm, when the polarization technique was conducted for SMF and DSF, respectively. With the conventional method, the FWM powers were, respectively, −56 and −20 dBm. The system performance greatly improved with the proposed polarization approach, where the bit error rates (BERs) at the first channel were and at received powers of −4.90 and −13.84 dBm for SMF and DSF, respectively.