Optical Fibre Communications in the context of FTTH/B

Rong Zhao， Chair for Deployment & Operations Committee

FTTH Council Europe

Photonic Integration Conference 2017, Eindhoven, The Netherlands

• Introduction

• FTTH/B Global and European Market

• FTTH/B Architecture and Layered Model

• FTTH/B Solutions with Optical Fibre Communications

• Summary

Outline

FTTH Council Europe

Global FTTH Panorama – September 2016

Source: FTTH Global Alliance, Feb 2017

Number of FTTH/B subscribers worldwideFUTURE-PROOF1Gbps today, 10Gbps and more tomorrow using the same fibre network

ECO-FRIENDLYLowest power consumption per megabit per second

ENABLERDigital society – Smart Cities5G backhaulLegacy evolution

COMPETITIVEUnbeatable 1G service offerPremium customer experience, marketing & brandingLow OPEX (less maintenance cost)

European FTTH/B figures – September 2016

FTTH/B European Ranking – September 2016

FTTx Architecture

CO/POP Access Loop Customer Premise

Fibre To The Home (FTTH)

Existing

in-building

cablingFibre To The Building (FTTB)

Fibre To The Distribution Point (FTTDp)

Distribution Point

Existing copper

lines

(~100-200m)

Fibre To The Curb (FTTC) Existing copper

lines

(~500m)

Street Cabinet

FTTH - The Layered Model

Service Delivery(residential, public & business)

Active Network(network equipment, business & OSS)

Passive Infrastructure(trenches, ducts, fibre)

End-user

FTTH Topology - Passive Infrastructure

• Point to Multi-Point (P2MP) • Point to Point (P2P)

FTTH Technology - Active Infrastructure

EthernetOLT

(switch)Fibre

Point of Presence Access loop Customer Premise

PON OLTFibre

Optical Splitter

PON(P2MP)

Ethernet(P2P)

Fibre

IP

IP

FTTH Technology - Standardization

It started in the 90’s…

APON BPON GPON

EPON

It started in the 70’s…

FSAN – ITU

IEEE

The standard of the 90’s The standard of 2004

EFM (Ethernet in the First Mile)IEEE

IEEE 802.3ah

100BASE-BX (FE)

1000BASE-BX (GE)

10GBASE-BX (10GE)

The standard of 2005

XG-PON1

The standard of 2010

G.984G.983 G.987

NG-PON2

10G-EPONIEEE 802.3av

The standard of 2015

The FTTH Solution Based on Ethernet

IP/Ethernet

Broadcast HE

STB / TV

PC

Black/SIP

phone

Ethernet

SwitchONT

100BASE-BX10 :

100Mb/s

1,550 nm

1,310 nm

Video OLT

Maximum reach of 60km with Single Mode FibreMax. 120km with Dual Single Mode Fibre (1000BaseZX)

Two options for RF Video Overlay (1,550 nm)• Additional fibre from Video OLT and fed into coax• Signal inserted into each fibre (triplexers)

1,490 nm

1,310 nm

1000BASE-BX:

1Gb/s

or

The FTTH Solution Based on PON

IP/Ethernet

Broadcast HE

STB / TV

PC

Black/SIP

phone

Passive

Optical

SplitterWDM

Video

Coupler

Packet Optical Line

Termination

(P-OLT)

Optical

Network

Termination

(ONT)

…

GPON : up to 128 splits

EPON : up to 32 splits

G.PON/EPON

1,490 nm

1,310 nm

1550 nm

Passive Outside Plant

(e.g. 1:64 Split ratio, 20km reach)

Video Optical Line

Termination

(V-OLT)

2.5Gb/s

1.25Gb/s

GPON

1,25Gb/s

EPON

1,270 nm

XG.PON

1.577 nm 10Gb/s

2.5Gb/s

XGPON/10GEPON

1.25Gb/s

GEPON

The FTTH Solution Based on NG-PON2

NG-PON2 (ITU-T G.989) will support multiple 10G wavelengths

1260 1280 1290 1330 1480 1500

XG-PON Up GPON Up GPON Down

1530 1540 1575 -1581 1600 1625

NG-PON2 Up XG-PON Down NG-PON2 Down

1550

RF

• Optical Network Unit has tunable upstream laser as well as a tunable receiver

• 4 wavelengths (10G/2.5G per wavelength, total 40G/10G) in the downstream,

with an option of up to 8

• Up to 4 wavelengths in the upstream

• Possible symmetric configuration: 40G/40G or 10G/10G

• RF overlay at 1550nm is not affected by NG-PON2

PON Evolution

• Dedicated wavelength per user

• Typically 32 users

• Requires 32/64 colours

• No real standards

WDM filter

32 wavelength

channels

Each user receives

one channel

“Real” WDM PON

• 4-8 channels, each carrying a “normal” PON

• Users subscribed to one of the channels

• Requires extra filters, add complexity

• Wavelength per operator

Optical filters

at user

Splitter

4-8 wavelength

channels

NG-PON2 (TWDM PON)

Customer Premises Equipment (CPE)

Service Provider’s regard the CPE as demarcation point for their

services and termination of the FTTH line

• 2 major types of CPE approaches, depending on the service offering

• ONT (Optical Network Termination)

Terminates incoming fibre and provides Ethernet Interface(s) towards the

subscriber

• Residential Services Gateway

Combined ONT and Service termination

• Mostly Voice/Data combinations

• Routing

• Wireless LAN (Wi-Fi)

• Security and firewall

• Integrated VoIP and

• Quality of service capabilities

New FTTH Technologies - Seamless Transition

Splitter

Mobile Backhaul

Residential

(2Play and 3Play services)

Local Community

(Schools, Police Stations, …)

OLT NG-PON2

Tx, Rx

CEx

Coexistence

Element

1, 5

RF Video HE

OLT GPON

OLT XG-PON

2, 6

3, 7

4, 8

Business and Enterprise

(VPN L3, Access to the

internet)NG-PON2

ONU

GPON

ONU

W

M

NG-PON2

ONU

CPRI

OTDR

Copper Last Mile (MSAN

and DSLAM aggregation)

Common Public Radio

Interface (CPRI)

NG-PON2

ONU

GPON

ONU

CPRI

One platform for all services

Summary

• Fibre to the Home is the future-proof architecture in the Next Generation

Access (NGA) networks, as a key enabler for Gigabit Society.

• More than 280 Million subscribers have FTTH/B access over the world, which

will significantly increase in next 5-10 years.

• Different FTTH technologies are based on optical fibre communications.

• Both active and passive infrastructure of FTTH benefits from photonic

technologies.

FTTH/B Global Ranking – September 2016

Service Delivery And Interoperability

Standardisation enables wide adoption of FTTH

• Transmission, Components

• PON

• Ethernet

• Services, Provisioning, Interoperability

• Broadband Forum • Service delivery TR-101/TR-177

• Automatic CPE provisioning TR-69

• OLT ONT/ONU interoperability TR-247

• Metro Ethernet Forum

• Ethernet Services, Transport Services