47pt Time and Wavelength Division Multiplexed Passive

Optical Network (TWDM-PON)

www.huawei.com

HUAWEI TECHNOLOGIES USA

NFOEC workshop: Technologies for NG-PON2: Why I Think This Technology Is the Clear Winner

Yuanqiu Luoyuanqiu.luo@huawei.com

March 2012

Agenda

• TWDM-PON introduction

• TWDM-PON features

Huawei Confidential

• Why TWDM-PON is the clear winner

Page 2

TWDM-PONMAC

ONU

splitter

MAC

λ1

λ2

λ3

λ4

λ5

λ1

λ5

WD

M M

uxW

DM

MAC

ONU

λ2

λ6

Huawei Confidential HUAWEI TECHNOLOGIES USA

� Stacked XG-PON, n××××XG PON, 1:64

� n=4, downstream 40Gb/s, upstream 10Gb/s

� ODN reuse, colorless and reconfigurable ONU

Page 3

Cλ6

λ7

λ8

WD

M D

eMux

MAC

ONU

λ3

λ7

MAC

ONU

λ4

λ8

ONUONU

Major features

�Stacked TDM-PON� Leverages successful development effort of

TDM-PON optics, MAC, OAM

�ODN reuse� Coexists with previous generations of PONs

Huawei Confidential Page 4

� Coexists with previous generations of PONs

(e.g., G/E-PON, XG-PON/10GE-PON)

� FTTB/FTTH can be upgraded to higher

bandwidth

�Colorless and reconfigurable ONU� Tunbale ONU

� One inventory supports all requirements

Wavelength plan� Option 1: C-band wavelength plan

� Option 2: XG-PON wavelength reuse

1280 1290 1300 1310 1320 1330 1340 1470 1480 1490 1500 1510

G-PON downstreamG-PON upstream

127012601250

XG-PON upstream

1547.87 15701557.361555.751554.13 1558.98

TWDM-PON downstream

1520 1544.381538.191536.611535.04 1539.77

TWDM-PON upstream

1580

XG-PON downstream

Huawei Confidential Page 5

1260 1270 1280 1290 1300 1310 1320 1330 1340 1350 1360

1480 1490 1500 1510 1520 1530 1540 1550 1560 1570 1580 1590 1600 1610

1575 1576 1577 1578 1579 1580 15811276 1277 1278 1279 1280

TWDM-PONdownstream

G-PON upstreamTWDM-PON upstream

G-PON downstream Video

� Option 2: XG-PON wavelength reuse

CCCC----bandbandbandband wavelength planwavelength planwavelength planwavelength plan XGXGXGXG----PON wavelength reusePON wavelength reusePON wavelength reusePON wavelength reuse

OLT launched powerOLT launched powerOLT launched powerOLT launched power per channelper channelper channelper channel 10.5 10.5 10.5 10.5 dBmdBmdBmdBm 6 6 6 6 dBmdBmdBmdBm

ONU receiver sensitivityONU receiver sensitivityONU receiver sensitivityONU receiver sensitivity ----28 28 28 28 dBmdBmdBmdBm ----28 28 28 28 dBmdBmdBmdBm

ONU launched powerONU launched powerONU launched powerONU launched power 2 2 2 2 dBmdBmdBmdBm 2 2 2 2 dBmdBmdBmdBm

Power budget

Huawei Confidential HUAWEI TECHNOLOGIES USA Page 6

OLT receiver sensitivityOLT receiver sensitivityOLT receiver sensitivityOLT receiver sensitivity ----38 38 38 38 dBmdBmdBmdBm ----31.5 31.5 31.5 31.5 dBmdBmdBmdBm

DownstreamDownstreamDownstreamDownstream OPPOPPOPPOPP 1 dB1 dB1 dB1 dB 1 dB1 dB1 dB1 dB

Upstream OPPUpstream OPPUpstream OPPUpstream OPP 0.5 dB0.5 dB0.5 dB0.5 dB 0.5 dB0.5 dB0.5 dB0.5 dB

LossLossLossLoss budgetbudgetbudgetbudget 37.5 dB37.5 dB37.5 dB37.5 dB 33 dB33 dB33 dB33 dB

� Power budget depends on wavelength plan

� C-band wavelength plan supports loss budget ~37.5 dB

� XG-PON wavelength reuse provides loss budget similar to XG-PON

FTTB/N upgrade

OLTMDU Splitter

XG-PON/10GE-PON10G

TWDM-PON40G

50M50M50M50M

100M100M100M100M

VDSL2

BandwidthBandwidthBandwidthBandwidth

Vectoring

Huawei Confidential HUAWEI TECHNOLOGIES USA Page 7

MDUSplitter

G/EPON 2.5G

10G

20M20M20M20M

MDU Splitter

ADSL2+

OLT

OLT

� TWDM-PON helps to upgrade from 1G to 10G to 40G step by step

as demands increases without changing MDU and ODN

Migration from FTTB to FTTH

WDM

ODN

TWDM-PONFTTH

G-PON/XG-PON OLT

G-PON/XG-PON FTTB

Splitter

G-PON/XG-PONMDU

TWDM-PONONU

Huawei Confidential HUAWEI TECHNOLOGIES USA Page 8

WDM

� Migration from FTTB to FTTH by replacing active MDU with

passive power splitter

� Migration node by node if required

Flexible spectrum: open access

Rx

Tx

ONU MAC

Rx

Tx

ONU MAC

RxService provider 3

Service provider 2

λ1

λ5

λ2

λ6

10G/2.5G

10G/2.5G

10G/

Service provider 1

λ3

λ7

Infrastructure provider

Huawei Confidential HUAWEI TECHNOLOGIES USA Page 9

Rx

Tx

ONU MAC

Rx

Tx

ONU MAC

Service provider 3

Service provider 410G/2.5G

10G/2.5G

λ3

λ7

λ4

λ8

� One infrastructure supports multiple service providers

� ODN shared by all service providers

� Tunable ONU supports remote reconfiguration

Why TWDM-PON is the clear winner

NG-PON2 requirements:

TWDM-PON basic architecture provides 40G aggregated rate, 40km

reach, 10G per ONU, 64 split

Migration and evolution:

Huawei Confidential Page 10

ODN reuse and spectrum flexibility support coexistence with legacy

PON systems, step by step migration, open access, etc.

Technology and cost:

Multiple tunable TRx technologies are developed to implement TWDM-

PON ONUs, there are options if one technology does not perform to

expectation

Thank youwww.huawei.com