Proceedings ArticleDOI
Technologies for a cost effective UDWDM-PON
Josep Prat
- pp 1-3
TLDR
A new ultra-dense WDM-PON with coherent techniques and low cost devices is developed for an efficient utilization of the optical spectrum, showing that the “Wavelength-to-the-User” concept can be feasible with 6.25 GHz channel spacing in a splitter-based PON.Abstract:
A new ultra-dense WDM-PON with coherent techniques and low cost devices is developed for an efficient utilization of the optical spectrum, showing that the “Wavelength-to-the-User” concept can be feasible with 6.25 GHz channel spacing in a splitter-based PON.read more
Citations
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Journal ArticleDOI
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
TL;DR: 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.
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
Real-Time Bidirectional Coherent Nyquist UDWDM-PON Coexisting With Multiple Deployed Systems in Field-Trial
Ali Shahpari,Ricardo B. Ferreira,Fernando P. Guiomar,Sofia B. Amado,Somayeh Ziaie,Claudio Rodrigues,Jacklyn D. Reis,Armando N. Pinto,Antônio Lúcio Teixeira +8 more
TL;DR: In this paper, a bidirectional coherent Nyquist shaped DQPSK-based PON with digital signal processing in real-time was evaluated and a set of optimum parameters and their impact on the network operation was driven.
Journal ArticleDOI
Single-fiber lightwave centralized WDM-OFDMA-PON with colorless optical network units
TL;DR: In this paper, a carrier-reuse single-feeder single-input single-out (SISO) single-output (SIMO) WDM-OFDMA-PON with colorless direct-detection optical network units and coherent detection optical line terminals is proposed and experimentally demonstrated.
Proceedings ArticleDOI
7.5 Gb/s direct DFB phase modulation with 8-DPSK for 6.25 GHz spaced coherent UDWDM-PONs
TL;DR: An 8-DPSK directly phase-modulated DFB with intradyne detection in a 50 km, 6.25 GHz channel spaced UDWDM-PON with Rx sensitivity of -31 dBm is demonstrated.
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.