Utilization of 10 Gbps DWDM System with Duobinary Modulation into Passive Optical Network

Abstract

Passive optical networks are considered to be the most promising solution for future access networks. Growing demand for capability and high bit rate transmission has become an important part of metropolitan optical communication networks in recent years. Currently deployed 1 Gbps passive optical networks do not seem to be suitable for future demands. This paper deals with the utilization of 10 Gbps DWDM (Dense Wavelength Division Multiplex) in PON (Passive Optical Network) using simulation tool OptSim. The importance of advanced optical modulation is the key for the future high spectral efficiency DWDM passive optical networks. Optical duobinary modulation seems to be the main contender for the future DWDM-PON systems. Based on the real passive optical network we propose and demonstrate the novel 10 Gbps DWDM-PON solution implementing optical duobinary modulation as a future candidate for high speed passive optical networks. Performance of proposed 10 Gbps DWDM-PON with optical duobinary modulation and intensity modulation with direct detection is analyzed using BER (Bit Error Rate) and Q factor measurements.

On the Impact of Fiber Nonlinear Effects on the Cp-DQPSK Modulated Ultra-DWDM System

“…In this relation P i , P j and P k are the output powers of the optical fiber coupled signals, P F is the output of the newly generated filament frequency signal, n is the optical fiber refractive index, λ is the wavelength, c is the velocity of light in the vacuum, α is the loss coefficient, L is the length of the optical fiber, D is the degradation factor, and X is the nonlinear susceptibility. Further description of nonlinear effect is in [4][5][6][7][8][9][10][11].…”