A Reconfigurable OADM Architecture for High-Order Regular- and Offset- QAM based OFDM Super-Channels

Kyriakos Vlachos; Filipe Marques Ferreira; Stylianos Sygletos

doi:10.1109/JLT.2019.2905141

A Reconfigurable OADM Architecture for High-Order Regular- and Offset- QAM based OFDM Super-Channels

Kyriakos Vlachos, Filipe Marques Ferreira, Stylianos Sygletos

Research output: Contribution to journal › Article › peer-review

Abstract

We investigate the performance of a Reconfigurable All-Optical Add Drop Multiplexer (ROADM) architecture, that is suitable of supporting high-order regular and offset based QAM signals. The design is based on a highly modular interferometric, structure, in which OFDMA sub-channels remain in the optical domain. Sub-channel extraction is achieved via waveform splitting and coherent subtraction. Numerical studies have been carried out to validate performance and optimize critical parameters of the add/drop process. Particularly, input parameters like the signal extinction ratio, pulse rise time, switching window and input power levels have been optimized for single sub-carrier add/drop operation, from an OFDM super-channel comprising seven optical sub-carriers with 10 GHz spacing. Results have shown that the proposed ROADM architecture can accommodate and process both regular and offset based high-order QAM signals.

Original language	English
Article number	8667642
Pages (from-to)	4008-4016
Number of pages	9
Journal	Journal of Lightwave Technology
Volume	37
Issue number	16
Early online date	15 Mar 2019
DOIs	https://doi.org/10.1109/JLT.2019.2905141
Publication status	Published - 15 Aug 2019

Bibliographical note

© 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Funding: Τhis work has been partially supported by the EU-ICT project
FOX-C (grant number 318415) and by the Engineering and Physical Sciences
Research Council (EPSRC) through PEACE (EP/L000091/1) and TRANSNET
(EP/R035342/1) projects.

Keywords

Add-drop multiplexing
OFDMA
QAM signals
coherent detection
optical superchannel

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10.1109/JLT.2019.2905141

A Reconfigurable OADM Architecture for High-Order Regular- and Offset- QAM based OFDM Super-Channels
© 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
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Cite this

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title = "A Reconfigurable OADM Architecture for High-Order Regular- and Offset- QAM based OFDM Super-Channels",

abstract = "We investigate the performance of a Reconfigurable All-Optical Add Drop Multiplexer (ROADM) architecture, that is suitable of supporting high-order regular and offset based QAM signals. The design is based on a highly modular interferometric, structure, in which OFDMA sub-channels remain in the optical domain. Sub-channel extraction is achieved via waveform splitting and coherent subtraction. Numerical studies have been carried out to validate performance and optimize critical parameters of the add/drop process. Particularly, input parameters like the signal extinction ratio, pulse rise time, switching window and input power levels have been optimized for single sub-carrier add/drop operation, from an OFDM super-channel comprising seven optical sub-carriers with 10 GHz spacing. Results have shown that the proposed ROADM architecture can accommodate and process both regular and offset based high-order QAM signals.",

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A Reconfigurable OADM Architecture for High-Order Regular- and Offset- QAM based OFDM Super-Channels

Abstract

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Keywords

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