New method for modeling and design optical SDM transmission system using long haul FMF with PDM DWDM techniques enabling QPSK modulation format

Abstract EN

This paper presents the modeling and design of ultra high capacity Space Division Multiplexing (SDM) transmission system.

Polarization Division Multiplexing (PDM) and Dense Wavelength Division Multiplexing (DWDM) techniques are also proposed in this system to increase total system data rate.

For the ultra-high capacity need of SDM, Few Mode Fiber (FMF) was proposed as SDM best technology for obtaining ultra-high bit rates with long haul transmission.

The description and design of 8-DWDM channels over 7 modes SDM/PDM system was explored as future of ultra-high capacity optical network.

A long-haul transmission of 1080 Km recorded for 8-WDM channels-7modes-SDM/PDM system by using QPSK modulation format.

The total bit rate achieved by our designed system is 4.48 Tb/s at 40Gb/s.

Channel estimation techniques were proposed to enable the transmitter pre-shaping design for the linear effects mitigation by using different DSP algorithms.

The presence of linear and nonlinear losses limits the acceptable range of input power that produce the required BER for our proposed system from -4dBm to 4dBm.