NG-PON2

The first PON standard optimized for service convergence

NG-PON2 videos Q4 2017

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


Wavelengths


Resources

Download NG-PON2 30"x20" wallchart

NG-PON2 technical information


ONU optics

ONT Option

Transmit Power Range

Receive Sensitivity

Type A – 10G/10G

4dBm to 9dBm

-7dBm to -28dBm

Type A – 10G/2.5G

4dBm to 9dBm

-7dBm to -28dBm

Type B – 10G/10G

2dBm to 7dBm

-7dBm to -28dBm

Type B – 10G/2.5G

0dBm to 5dBm

-7dBm to -28dBm

ODN classes

ODN Class

Max Attenuation

Min Attenuation

Differential ODN Loss

N1

29dB

14dB

15dB

N2

31dB

16dB

15dB

E1

33dB

18dB

15dB

E2

35dB

20dB

15dB

Wavelengths

 

Channel

Wavelength Downstream

Wavelength Upstream

ƛ1

1

1596.34nm

1532.68nm

ƛ2

2

1597.19nm

1533.47nm

ƛ3

3

1598.04nm

1534.25nm

ƛ4

4

1598.89nm

1535.04nm

Typical applications

Class

Optic Tuning Time

Application

Class 1

<10us

Not Used

Class 2

10us to 25ms

Enterprise Svcs

Class 3

25ms to 1sec

Residential/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
  • WT-331 Architecture & Technical Requirements for PON-based Mobile Backhaul networks (WT are member-only documents in progress)
  • WT-385 YANG data models for ITU-T Passive Optical Networks
  • WT-414 Interoperability Test Plan for NETCONF/YANG OLT management
  • WT-402 PON Abstraction Interface for Time-critical Applications