The Outlook for PON Standardization: A Tutorial

Wey, Jun Shan

doi:10.1109/jlt.2019.2950889

Cited by 115 publications

(35 citation statements)

References 9 publications

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“…This results in an efficient use of the fiber infrastructure resulting in significant cost advantages compared to point-to-point fiber links and static wavelength-division multiplexing. While PONs operating at a shared gross bit rate of 50 Gbit/s are currently being standardized, data rates of 100Gbit/s and beyond will be required in the future [3]- [5]. In order to facilitate a smooth market introduction, coexistence with legacy PONs having a loss budget in the order of 30 dB, allowing a split factor of 64 or more, is required [6]- [8].…”

Section: Introductionmentioning

confidence: 99%

Colorless Coherent TDM-PON Based on a Frequency-Comb Laser

Adib

Füllner

Kemal

et al. 2022

J. Lightwave Technol.

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Coherent reception becomes an interesting option when data rates in time-division-multiplexed (TDM) passive optical networks (PONs) grow beyond 50 Gbit/s. Controlling the wavelength, i.e., the optical frequency, and the phase of the laser acting as local oscillator (LO) is one of the main technical challenges in the design of coherent TDM PONs. In the optical network units (ONUs), low-cost lasers are required, which come at the expense of wavelength variations and drifts over multiple nanometers due to fabrication imperfections, and temperature variations. This contradicts the requirement of wavelength-stable LOs in coherent receivers. The use of a wavelength locker circuit and a temperature controller is considered as too complex for applications in access networks. In this work, we propose a novel colorless coherent architecture with high resilience to ONU laser wavelength drifts of up to ±4 nm (±0.5 THz) for future 100 Gbit/s PON. It allows the use of distributed feedback lasers at the ONU side. This is rendered possible by generating a frequency comb with carefully chosen free spectral range in a quantum-dash mode-locked laser diode at the optical line terminal. In upstream operation, the frequency comb serves as an LO, whereas the same information is modulated onto all comb lines for the case of downstream. As a result, the ONU laser can drift over the entire comb bandwidth without substantial performance penalty. We experimentally demonstrate downstream and upstream operation with an aggregated raw data rate of 96 Gbit/s, respectively. We further introduce advanced digital signal processing (DSP) methods including a coarse frequency offset compensation (CFOC) and a multiple-input multiple-output (MIMO) equalizer to improve the performance of our concept. We Manuscript

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Section: Introductionmentioning

confidence: 99%

Colorless Coherent TDM-PON Based on a Frequency-Comb Laser

Adib

Füllner

Kemal

et al. 2022

J. Lightwave Technol.

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“…Some specifications have already been released: the downstream will be carried out at 1342nm+/-2nm with a line bitrate of 50Gbit/s. 12.5Gbit/s and 25Gbit/s upstream line rates are discussed and 3 wavelength range options are proposed to provide different co-existence strategies with current technologies, namely Gigabit capable PON (G-PON) and 10-Gigabit-capable symmetric PON (XGS-PON) [2]. O-band has been chosen in order to mitigate chromatic dispersion penalties.…”

Section: Db Of Optical Budget With Dsp-free Real Time Experimentation Up To 50gbit/s Nrz Using O-band Dfb-eam and Soa-pin For Higher Speementioning

confidence: 99%

32dB of Optical Budget with DSP-free real time experimentation up to 50Gbit/s NRZ using O-band DFB-EAM and SOA-PIN for Higher Speed PONs

Saliou

Bramerie

Potet

et al. 2021

Optical Fiber Communication Conference (OFC) 2021

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“…In recent years, the ITU and IEEE standardization groups have proposed next-generation PONs based on Time and Wavelength Division Multiplexing (TWDM) to increase the network capacity for supporting demanding applications and services. TWDM allows allocation in various wavelength channels of 25 Gb/s (50G-EPON) and 10 Gb/s (40G-XPON) [7].…”

Section: Imentioning

confidence: 99%

Federated Learning over Next-Generation Ethernet Passive Optical Networks

Ciceri¹,

Astudillo²,

Zhu³

et al. 2021

Preprint

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Federated Learning (FL) is a distributed machine learning (ML) type of processing that preserves the privacy of user data, sharing only the parameters of ML models with a common server. The processing of FL requires specific latency and bandwidth demands that need to be fulfilled by the operation of the communication network. This paper introduces a Dynamic Wavelength and Bandwidth Allocation algorithm for Quality of Service (QoS) provisioning for FL traffic over 50 Gb/s Ethernet Passive Optical Networks. The proposed algorithm prioritizes FL traffic and reduces the delay of FL and delay-critical applications supported on the same infrastructure.

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The Outlook for PON Standardization: A Tutorial

Cited by 115 publications

References 9 publications

Colorless Coherent TDM-PON Based on a Frequency-Comb Laser

Colorless Coherent TDM-PON Based on a Frequency-Comb Laser

32dB of Optical Budget with DSP-free real time experimentation up to 50Gbit/s NRZ using O-band DFB-EAM and SOA-PIN for Higher Speed PONs

Federated Learning over Next-Generation Ethernet Passive Optical Networks

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