NG-PON2 Council

The NG-PON2 council was formed to centralize and disseminate the expertise and experience of the NG-PON2 market in order to facilitate the rapid deployment of NG-PON2 implementations

NG-PON2 characteristics

  • NGPON2 (TWDM) expansible from 40Gbps: 4 wavelengths @ 10Gbps per wavelength today moving to 8x80Gbps in future
  • Bonding capable: Multiple wavelengths may be channel-bonded to provide > 10Gbps services with standards work in progress
  • Symmetrical and asymmetrical bit rates to fit any service – Supports 10Gbps down per wavelength and 10Gbps up or 2.5Gbps up per wavelength
  • Tunable: ONU’s utilize tunable optical to dynamically tune to provisioned wavelength(s)
  • Coexistence: wavelength mux to combine NG-PON2 wavelengths to single fiber, and co-existence
    element to combine other technologies to single fiber with NG-PON2
  • Point-to-point WDM capabilities on the same infrastructure (4-8 wavelengths)

Impact for the industry & users

  • Converge all services for business, consumer, wireless-wireline on a single fiber network
  • Pay as you grow architecture: add lambdas as required
  • 10Gbps + service capabilities to any subscriber
  • Lower OpEx with use of tunable optics
  • Lower Latency than single wavelength systems
  • Bandwidth rebalancing by reassigning users to different wavelengths
  • Allows providers to deliver dynamic bandwidth to any subscriber at any time
  • Greater inherent reliability and availability with autonomous ONT re-tuning
  • Operational protection: move customers to another wavelength while fixing/resetting the card
  • Green: ability to turn off unnecessary CO PON cards at low traffic levels by reassigning wavelengths
  • NGPON2 (TWDM) can co-exist with point-to-point NG-PON2, XG-PON1, XGS-PON, GPON, EPON, 10G EPON, RF Video

NG-PON2 service implementation choices



Download NG-PON2 30″x20″ wallchart

NG-PON2 technical information

ONU optics

ONT OptionTransmit Power RangeReceive Sensitivity
Type A – 10G/10G4dBm to 9dBm-7dBm to -28dBm
Type A – 10G/2.5G4dBm to 9dBm-7dBm to -28dBm
Type B – 10G/10G2dBm to 7dBm-7dBm to -28dBm
Type B – 10G/2.5G0dBm to 5dBm-7dBm to -28dBm

ODN classes

ODN ClassMax AttenuationMin AttenuationDifferential ODN Loss


ChannelWavelength DownstreamWavelength Upstream

Typical applications

ClassOptic Tuning TimeApplication
Class 1<10usNot Used
Class 210us to 25msEnterprise Svcs
Class 325ms to 1secResidential/SoHo

NG-PON2 standards

  • ITU-T G.989: 40Gbps Capable Passive Optical Networks: Definitions, abbreviations and Acronyms
  • ITU-T G.989.1: 40Gbps Capable Passive Optical Networks: General requirements
  • ITU-T G.989.2: 40Gbps Capable Passive Optical Networks: Physical media dependent (PMD) layer specification
  • ITU-T G.989.3: 40Gbps Capable Passive Optical Networks: Transmission convergence layer specification
  • ITU-T G.988 ONU management and control interface (OMCI) specification

BBF projects related to NG-PON2

  • BBF-247 PON Conformance Certification (BBF member program)
  • TR-352: Multi-wavelength PON Inter-Channel-Termination Protocol (ICTP) Specification (published) with amendments for NG-PON2
  • TR-331: Architecture & Technical Requirements for PON-based Mobile Backhaul networks
  • TR-385: YANG data models for ITU-T Passive Optical Networks
  • WT-414: Interoperability Test Plan for NETCONF/YANG OLT management (in progress)
  • TR-402: Functional Model for PON Abstraction Interface

NG-PON2 videos Q4 2017