Design and performance evaluation of DWDM networks using reconfiguration and modulation methods

Abstract In optical fibers, erbium-doped fiber amplifiers (EDFA) can amplify signals at different wavelengths, thus improving network connectivity, bandwidth requirements, and reduced transmission capacity. As the communication expanse and numeral of stations upturn, fiber nonlinearity and dispersion effects limit the efficiency of (DWDM) dense wavelength division multiplexing systems. This paper supports learning-based dense wavelength division multiplexing network reconfiguration (RLR), modulation-ultra-dense wavelength division multiplexing (UDWDM) differential quadrature phase shift keying (QPSK) to improve transmission, which has no positive effect in most cases. Configure redundancy at limited alteration and worldwide system level for better presentation. With new modifications (such as wavelength selection, modulation transformation, path planning, bandwidth transformation, etc.) according to previous studies, this work provides a comprehensive combination to support strategy selection. MatLab and OptiSystem simulator work together to simulate solutions.