Ahmed Jasim Obaid, H. . K. Al-Musawi, and M. Valizadeh, “Performance Optimization for (NG-RoF) Systems: Mitigating Nonlinear Effects in Long-Distance Transmission”, WJES, vol. 13, no. 2, pp. 37–47, Jun. 2025, doi: 10.31185/wjes.Vol13.Iss2.672.