Technologies for Cost-Effective udWDM-PONs
Josep Prat,Ivan N. Cano,Marco Presi,Ioannis Tomkos,Dimitrios Klonidis,Gemma Vall-Llosera,Romain Brenot,Robert Pous,George Papastergiou,Albert Rafel,Ernesto Ciaramella +10 more
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TLDR
In this article, an ultradense WDM-PON with only 6.25 GHz channel spacing is implemented with conventional DFB lasers, for a splitter-based PON infrastructure with 256 ONUs.Abstract:
New technologies for ultradense WDM-PON (udWDM-PON), enabled by coherent techniques and low-cost devices, are developed for an efficient utilization of the optical spectrum, revealing that the “Wavelength-to-the-User” concept can be feasible. In this paper, an udWDM-PON with only 6.25-GHz channel spacing is implemented with conventional DFB lasers, for a splitter-based PON infrastructure with 256 ONUs. The results of the analysis of udWDM access network architecture with respect to their associated complexity, cost, and migration scenarios, exhibit the potential for higher aggregate throughput, higher split ratios, and node consolidation, when compared to competing technologies.read more
Citations
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Journal ArticleDOI
Coherent Access: A Review
Ali Shahpari,Ricardo B. Ferreira,Ruben S. Luis,Zoran Vujicic,Fernando P. Guiomar,Jacklyn D. Reis,Antônio Lúcio Teixeira +6 more
TL;DR: In this paper, a set of architectures for coherent optical access networks is presented and the key attributes of each scenario are investigated, as a basis to decrease the cost of the local oscillator (LO) at customer side, and the possibility of using a low-cost laser as LO with real-time detection of a Nyquist-shaped differential quadrature phase-shift keying (DQPSK) signal using simple 8-bit digital signal processing (DSP) on a fieldprogrammable gate array.
Journal ArticleDOI
UDWDM-PON using low-cost coherent transceivers with limited tunability and heuristic DWA
TL;DR: In this paper, a new passive optical network for access, making use of ultra-dense wavelength division multiplexing (UDWDM) by densely spacing channels by a few gigahertz and introducing the "wavelength-to-the-user" concept, is proposed.
Journal ArticleDOI
Field-Trial of a High-Budget, Filterless, $\lambda$ -to-the-User, UDWDM-PON Enabled by an Innovative Class of Low-Cost Coherent Transceivers
Marco Presi,M. Artiglia,F. Bottoni,M. Rannello,Ivan N. Cano,Jaison Tabares,Juan-Camilo Velasquez,Saeed Ghasemi,Victor Polo,Guang Yong Chu,Josep Prat,Gregorio Azcarate,Robert Pous,Chantal Vila,Helene Debregeas,Gemma Vall-Llosera,Albert Rafel,Ernesto Ciaramella +17 more
TL;DR: The successful field trial of the proposed systems in a testbed where 14 UDWDM channels are transmitted simultaneously in a dark-fiber network deployed in the city of Pisa (Italy), delivering real-time and/or test traffic is reported.
Journal ArticleDOI
Coherent UDWDM-PON With Dual-Polarization Transceivers in Real-Time
TL;DR: A real-time experimental demonstration of a long-reach coherent ultra-dense wavelength-division multiplexing (WDM)-passive optical network (PON) system with quadratic-amplitude modulation (QAM)-based dual-polarization optical transceivers using field-programmable gate array-based digital signal processing.
Journal ArticleDOI
Meeting the Traffic Requirements of Residential Users in the Next Decade with Current FTTH Standards: How Much? How Long?
TL;DR: In this paper, the traffic forecast in access networks for the next decade and analyze possible upgrade scenarios of fiber access networks, concluding which of the NG-PON flavors could better fit the demand.
References
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Journal ArticleDOI
Digital Coherent Receivers for Long-Reach Optical Access Networks
TL;DR: In this paper, the impact of local oscillator laser (LO) relative intensity noise (RIN) on receiver sensitivity is investigated theoretically and then experimentally by evaluating the sensitivity of a coherent receiver incorporating different tunable light sources; a low-RIN external cavity laser (ECL) and a monolithically integrated digital supermode distributed Bragg reflector (DS-DBR) laser.
Journal ArticleDOI
Polarization-Independent Receivers for Low-Cost Coherent OOK Systems
TL;DR: In this article, a low-cost coherent coherent OOK receiver with three photodiodes and a 3 × 3 coupler was proposed to obtain polarization-independent operation in low-power access networks, where the frequency-detuning between the signal carrier and the local oscillator is high enough, so that intrinsic second order distortions can be spectrally isolated and suppressed by the low pass filtering of the receiver.
Proceedings ArticleDOI
Recent advancement in WDM PON technology
TL;DR: This report reports on the recent advancement in the WDM PON technology including highspeed and long-reach operations achieved by using the directly modulated reflective semiconductor optical amplifiers and digital coherent receivers.
Proceedings ArticleDOI
Coherent optical access networks
TL;DR: Coherent technology is the only viable solution to fulfill requirements regarding data rate, reach and splitting factor for optical access.
Journal ArticleDOI
Direct Phase Modulation DFBs for Cost-Effective ONU Transmitter in udWDM PONs
TL;DR: In this paper, a direct phase modulating a low-cost distributed feedback laser is presented for user transmitter in ultra-dense wavelength division multiplexing passive optical networks, consisting of a simple RC network, which equalizes the phase response.