1. Hoshida, T., O. Vassilieva, K. Yamada, S. Choudhary, R. Pecqueur, and H. Kuwahara, "Optimal 40 Gb/s modulation formats for spectrally efficient long-haul DWDM systems," IEEE J. Lightwave Technol., Vol. 20, 1989, 2002.
doi:10.1109/JLT.2002.806761
2. Hayee, M. I. and A. E. Willner, "NRZ versus RZ in 10-40-Gb/s dispersion managed WDM transmission systems," IEEE Photonics Technol. Lett., Vol. 11, 991-993, 1999.
doi:10.1109/68.775323
3. Hodzik, A., B. Konrad, and K. Petemann, "Alternative modulation formatsin N 40 Gb/s WDM standard fiber RZ-transmission systems," IEEE J. Lightwave Technol., Vol. 20, 598, 2002.
doi:10.1109/50.996579
4. Shahiand, S. N. and S. Kumar, "Reduction of nonlinear impairments in fiber transmission system using fiber and/or transmitter diversity," Opt. Commun., Vol. 285, 3553-3558, 2012.
doi:10.1016/j.optcom.2012.04.019
5. Abed, H. J., N. M. Din, M. H. Al-Mansoori, H. A. Fadhil, and F. Abdullah, "Recent four-wave mixing suppression methods," Optik, Vol. 124, 2214-2218, 2013.
doi:10.1016/j.ijleo.2012.06.082
6. Abd, H. J., M. H. Al-Mansoori, N. M. Din, F. Abdullah, and H. A. Fadhil, "Priority-based parameter optimization strategy for reducing the effects of four-wave mixing on WDM system," Optik, Vol. 125, 25, 2014.
doi:10.1016/j.ijleo.2013.06.002
7. Abd, H., N. M. Din, M. H. Al-Mansoori, F. Abdullah, and H. A. Fadhil, "Four-wave mixing crosstalk suppression based on the pairing combinations of differently linear-polarized optical signals," Sci. World J., Vol. 2014, Article ID 243795, 1, 2014.
8. Abd, H. J., M. H. Al-Mansoori, N. M. Din, F. Abdullah, and H. A. Fadhil, "Four-wave mixing reduction technique based on smart filter approach," International Journal of Electronics, Vol. 102, No. 6, 1056-1070, 2015.
doi:10.1080/00207217.2014.963890
9. Abed, H. J., N. M. Din, M. H. Al-Mansoori, F. Abdullah, and H. A. Fadhil, "Comparison among different types of advanced modulation formats under four wave mixing effects," Ukrainian Journal of Physics, Vol. 58, No. 4, 326-334, 2013.
doi:10.15407/ujpe58.04.0326
10. Abd, H. J. and M. S. Almahanna, "Suppression of nonlinear effect for high data transmission rate with a WDM using the optimization properties," Ukrainian J. of Physics, Vol. 62, 583-588, 2017.
doi:10.15407/ujpe62.07.0583
11. Salim, N., H. J. Abd, A. N. Aljamal, and A. H. Jaber, "Four-wave mixing suppression method based on odd-even channels arrangement strategy," Progress In Electromagnetics Research, Vol. 66, 163-172, 2018.
12. Abd, H. J., N. M. Din, M. H. Al-Mansoori, F. Abdullah, and H. A. Fadhil, "Mitigation of FWM crosstalk in WDM system using polarization interleaving technique," 2013 IEEE 4th International Conference on Photonics (ICP), 117-119, 2013.
doi:10.1109/ICP.2013.6687086
13. Abed, H. J., N. M. Din, M. H. Al-Mansoori, F. Abdullah, N. Salim, and H. A. Fadhil, "A new FWM reduction technique based on damping selective wavelengths," Ukrainian Journal of Physics, Vol. 58, No. 10, 956-961, 2013.
doi:10.15407/ujpe58.10.0956
14. Jabber, A. H., N. M. Din, M. H. Al-Mansoori, F. Abdullah, H. A. Fadhl, and N. Salim, "Influence of four wave mixing on modulation format performance under 100 Gb/s data rate," 2012 IEEE Student Conference on Research and Development (SCOReD), 129-133, 2012.
doi:10.1109/SCOReD.2012.6518625
15. Agrawal, G. P., Nonlinear Fiber Optics, Academic Press, 2001.
16. Agrawal, G. P., Applications of Nonlinear Fiber Optics, Academic Press, 2001.
17. Hayee, M. I. and A. E. Willner, "NRZ versus RZ in 10-40-Gb/s dispersion managed WDM transmission systems," IEEE Photonics Technol. Lett., Vol. 11, 991-993, 1999.
doi:10.1109/68.775323
18. Bosco, G., A. Carena, V. Curri, R. Gaudino, and P. Poggiolini, "On the use of NRZ, RZ, and CSRZ modulation at 40Gb/s with narrow DWDM channel spacing," J. Lightwave Technol., Vol. 20, No. 9, 1694, 2002.
doi:10.1109/JLT.2002.806309
19. Hodzik, A., B. Konrad, and K. Petemann, "Alternative modulation formats in N 40 Gb/s WDM standard fiber RZ-transmission systems," IEEE J. Lightwave Technol., Vol. 20, 598, 2002.
doi:10.1109/50.996579
20. Dahan, D. and G. Eisenstein, "Numerical comparison between distributed and discrete amplification in a point-to-point 40-Gb/s 40-WDM-based transmission system with three different modulation formats," J. Lightwave Technol., Vol. 20, 379, 2002.
doi:10.1109/50.988986
21. Kaler, R. S., A. K. Sharma, and T. S. Kamal, "Simulation results for DWDM systems with ultra-high capacity," Int. J. Fiber Integrated Opt., Vol. 21, No. 5, 2002.
22. Winzer, P. J. and R.-J. Essiambre, "Advanced optical modulation formats," Proceedings of the IEEE, Vol. 94, No. 5, 952-985, May 2006.
doi:10.1109/JPROC.2006.873438
23. Singh, S. and R. S. Kaler, "Simulation of DWDM signals using optimum span scheme with cascaded optimized semiconductor optical amplifiers," Optik --- Int. J. Light Electron. Opt., Vol. 118, 74-82, 2007.
doi:10.1016/j.ijleo.2006.02.002
24. Inoue, K., K. Nakanishi, K. Oda, and H. Toba, "Crosstalk and power penalty due to fiber four-wave mixing in multichannel transmissions," J. Lightwave Technol., Vol. 12, 1423, 1994.
doi:10.1109/50.317531
25. Singh, S. P., S. Kar, and V. K. Jain, "Performance of all-optical WDM network in presence of four-wave mixing," Optical Amplifier Noise, and Wavelength Converter Noise, Vol. 26, 79-97, 2007.
26. Ema, K., M. Kuwata-Gonokami, and F. Shimizu, "All optical subTbits/s serial to parallel conversion using excitonic giant nonlinearity," Appl. Phys. Lett., Vol. 59, 2799, 1991.
doi:10.1063/1.105864