Simulation of Ultra High Bit Rate DWDM/PDM/SDM System Using FMF Supporting 20 Spatial and Polarization Modes Enabling Multi-Mode Splicers with QPSK Modulation Format

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Author(s) Ibraheem Abdullah Murdas | Musaddak Maher Abdul Zahra
Pages 443-454
Volume 6
Issue 12
Date December, 2016
Keywords SDM, FMF, FM-EDFA, QPSK, MIMO

Abstract

Optical fiber communication is the backbone for the telecommunications infrastructure that supports the internet. Single-mode fiber transmission can no longer satisfy exponentially growing capacity demand. It is well known that the capacity of a communication channel cannot exceed the Shannon limit. This paper demonstrates simulation framework for few-mode fiber based space division multiplexing (SDM) transmission system. The technique has been proposed as an option for further capacity increase of transmission fibers. Polarization dual multiplexing (PDM) and dense wavelength multiplexing (DWDM) techniques are also used in this system to increase total system data rate. An extra dimension that a fiber can offer for achieving more information is space. For the ultra-high capacity need of SDM, we have proposed the FMF as SDM highest technology for obtaining ultra-high bit rate systems. The challenge is the inter-core crosstalk of the high-order modes. The properties of modes were investigated using the uncoupled-mode theory. In this paper, we explore the design and modeling of DWDM technique with sixteen channels over ten cores SDM/PDM system proposed as future of ultra-high capacity optical system. The approach of adaptive multi-input multi-output (MIMO) digital signal processing (DSP) has been proposed and demonstrated to untangle the crosstalk between the spatial modes and compensate the DMGD. Different sub-channels are synchronously sampled, and the sampled signals from adjacent sub-channels are processed jointly using DSP in a form of float matrix to remove different fiber impairments.

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