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.

Publication DOI: https://doi.org/10.1109/JLT.2019.2905141
Dataset DOI: https://doi.org/10.17036/researchdata.aston.ac.uk.00000408
Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
College of Engineering & Physical Sciences
College of Engineering & Physical Sciences > School of Informatics and Digital Engineering > Electrical and Electronic Engineering
Additional Information: © 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.
Uncontrolled Keywords: Add-drop multiplexing,OFDMA,QAM signals,coherent detection,optical superchannel,Atomic and Molecular Physics, and Optics
Publication ISSN: 1558-2213
Full Text Link:
Related URLs: https://ieeexpl ... cument/8667642/ (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2019-08-15
Published Online Date: 2019-03-15
Accepted Date: 2019-03-01
Authors: Vlachos, Kyriakos
Marques Ferreira, Filipe (ORCID Profile 0000-0002-1533-843X)
Sygletos, Stylianos (ORCID Profile 0000-0003-2063-8733)

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