1. Field-Trial of a High-Budget, Filterless, $\lambda$ -to-the-User, UDWDM-PON Enabled by an Innovative Class of Low-Cost Coherent Transceivers
- Author
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Gemma Vall-Llosera, M. Rannello, Gregorio Azcarate, Albert Rafel, Josep Prat, Guang Yong Chu, M. Artiglia, Juan-Camilo Velasquez, Chantal Vila, Ivan N. Cano, Marco Presi, Ernesto Ciaramella, Saeed Ghasemi, Helene Debregeas, Robert Pous, Jaison Tabares, F. Bottoni, Victor Polo, Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions, and Universitat Politècnica de Catalunya. GCO - Grup de Comunicacions Òptiques
- Subjects
Transceivers ,Access Networks ,Computer science ,Access networks ,Coherent Detection ,homodyning ,Optical network units ,02 engineering and technology ,Analog signal processing ,Passive optical network ,Multiplexing ,020210 optoelectronics & photonics ,Atomic and Molecular Physics ,Wavelength-division multiplexing ,Amplitude shift keying ,0202 electrical engineering, electronic engineering, information engineering ,Comunicacions òptiques ,Passive optical networks ,Digital signal processing ,Homodyning ,Access network ,Optical communications ,business.industry ,heterodyning ,Multiplexatge per divisió de freqüència ,Optical mixing ,passive optical networks ,WDM networks ,Atomic and Molecular Physics, and Optics ,Amplitude-shift keying ,coherent detection ,Enginyeria de la telecomunicació::Telecomunicació òptica [Àrees temàtiques de la UPC] ,Wavelength division multiplexing ,Heterodyning ,and Optics ,business ,Computer hardware ,Communication channel - Abstract
©2017 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. We experimentally demonstrate an innovative ultradense wavelength division multiplexing (UDWDM) passive optical networks (PON) that implements the full ¿-to-the-user concept in a filterless distribution network. Key element of the proposed system is a novel class of coherent transceivers, purposely developed with a nonconventional technical approach. Indeed, they are designed and realized to avoid D/A-A/D converter stages and digital signal processing in favor of simple analog processing so that they match system, cost, and power consumption requirements of the access networks without sacrificing the overall performance. These coherent transceivers target different use case scenarios (residential, business, fixed, wireless) still keeping perfect compatibility and co-existence with legacy infrastructures installed to support gray, time division multiplexed PON systems. Moreover, the availability of coherent transceivers of different cost/performance ratios allows for deployments of different quality service grades. In this paper, we report the successful field trial of the proposed systems in a testbed where 14 UDWDM channels (and one legacy E-PON system) are transmitted simultaneously in a dark-fiber network deployed in the city of Pisa (Italy), delivering real-time and/or test traffic. The trial demonstrated filterless operations (each remote node selects individually its own UDWDM channel on a fine 6.25-GHz grid), real-time GbE transmissions (by using either fully analog or light digital signal processing), multirate transmission (1.25 and 10 Gb/s), high optical distribution network loss (18-40 dB) as well as a bidirectional channel monitoring system.
- Published
- 2017
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