10G-EPON Standardization and Its Development Status...PR30 technologies Parameter modifications Main point of the argument : technologies for PR/PRX30 class (1) PIN-PD@ONU (w/o optical

1

10G10G--EPON Standardization and EPON Standardization and

Its Development StatusIts Development Status

Keiji Tanaka

KDDI R&D Laboratories Inc.

[email protected]

K.Tanaka, OFC/NFOEC 2009, Mar. 23-26, 2009 All Rights Reserved © 2009 KDDI, Tokyo

1.1. Background and motivation Background and motivation

2.2. IEEE 802.3av standardizationIEEE 802.3av standardization

3.3. Research activitiesResearch activities

4.4. Development statusDevelopment status

5.5. SummarySummary

OutlineOutline

NThC4.pdf

© 2009 OSA/OFC/NFOEC 2009

978-1-55752-865-0/09/$25.00 ©2009 IEEE

2


1.1. Background and motivation Background and motivation (a)(a) FTTH growth in JapanFTTH growth in Japan(b)(b) FTTH systemsFTTH systems(c)(c) Why 10GWhy 10G--EPON necessary?EPON necessary?(d)(d) When 10GWhen 10G--EPON feasible?EPON feasible?




5.5. SummarySummary

OutlineOutline


FTTH growth in JapanFTTH growth in Japan

Num

ber o

f bro

adba

nd u

sers

[M

illio

n]

0

5

10

15

Source: Ministry of Internal Affairs and Communications statistiSource: Ministry of Internal Affairs and Communications statistics databasecs database

CATV

FTTH

DSL

‘02 ‘03 ‘04 ‘05 ‘06 ‘07 ‘08 ‘09 ‘10

20

Year

Shifted to decrease

The number of FTTH lines, more than 13 million at the end of Sep. 2008, exceeded the number of DSL lines in 2Q/2008.

Statistics as of Sep. 2008Statistics as of Sep. 2008Statistics as of Sep. 2008

� Number of lines: FTTH: 13.8 MDSL: 12.0 MCATV: 4.0 M(Mobile: 92.0 M)

� Number of operators:FTTH: 171DSL: 47CATV: 381

3


Flavors of FTTH systemsFlavors of FTTH systems

Media converterMedia converter

PONPON--OLTOLT

Single star

Passive double star

100Mbit/sor

1Gbit/s

Optical fiberOptical fiber PONPON

ApartmentApartment

Residential houseResidential houseCOCO

VDSL DSLAM

VDSLCPE

Data rateData rate(Bandwidth)(Bandwidth)

EfficiencyEfficiency

SSSSWDMWDM--PONPON

TDMTDM--PONPON

HighHigh

HighHigh

Optical access systemOptical access systemOptical access system

Media converter

Power splitter

Power splitter

SSSS

Power splitter

PON topology is suitable for accommodating a lot of users and diPON topology is suitable for accommodating a lot of users and distributing stributing broadcasting video services.broadcasting video services.


Why 10GWhy 10G--EPON necessary?EPON necessary?

Why 10Gbps?

Optical feeders with bandwidth of ~10Gbps are necessary for Optical feeders with bandwidth of ~10Gbps are necessary for � Advanced video services� Multi-service platform to accommodate MDUs and mobile APs

Why PON?

PON reduces CAPEX and OPEX PON reduces CAPEX and OPEX � Accommodates a large number of FTTx users and mobile APs efficiently� Reduces the footprint and power consumption of CO equipment� Reduces fiber deployment and repair cost

4


Digital televisionDigital television

CFI, March 2006, IEEE802.3CFI, March 2006, IEEE802.3

Access network must grow beyond 1Gbps to provide advanced video Access network must grow beyond 1Gbps to provide advanced video services such as digital cinema.services such as digital cinema.


MultiMulti--service platformservice platform

CableCable

Residential usersResidential users��HDTVHDTV��

Business usersBusiness users((GbEGbE, 10GbE), 10GbE)

ApartmentApartment

CMTS

10G-EPONONU

10G-EPONOLT

10G-EPONONU

10G-EPONONU

xDSLxDSL

LTE, LTE, WiFiWiFi, , WiMAXWiMAX

BusinessBusinessBusiness

ConsumerConsumerConsumer

-- FTTxFTTx-- xDSLxDSL-- CableCable

3.5G3.5G--mobilemobile

DSLAM

10G-EPONONU

Wireless back-haulWireless backWireless back--haulhaul

Next-generation access is expected to work as a multi-service platform in which multiple dwelling units (MDUs) and wireless access points (APs) are accommodated to reduce CAPEX and OPEX of the infrastructure.

A large bandwidth is required for nextA large bandwidth is required for next--generation access network. generation access network.

5


When 10GWhen 10G--EPON feasible?EPON feasible?

1990 1995 2000 2005 2010 20151M

10M

100M

1G

10G

Tran

smis

sion

rate

[bp

s]

10Base-T

100Base-T

10GBase-T/LRM

100GBase

1000Base-X/T

10GBase-X/R/W

100G

1T

Year

ADSL

FTTH

10G-EPONNGA-1

Ethernet

NGA-2

10G-EPON would be commercially feasible in 2011~2012, judging from the speed evolution of Ethernet and commercial FTTH services.


1.1. Background and motivationBackground and motivation

2.2. IEEE 802.3av standardizationIEEE 802.3av standardization(a)(a) Overview of PONOverview of PON(b)(b) EPON layering diagramEPON layering diagram(c)(c) Overview of IEEE 802.3av projectOverview of IEEE 802.3av project(d)(d) AdAd--hoc activities in IEEE 802.3avhoc activities in IEEE 802.3av(e)(e) NextNext--generation access in ITUgeneration access in ITU--T T



5.5. SummarySummary

OutlineOutline

6


1 2 3

11

22

33

��

1 2 3

�

�

1

2

3

�

1

2

3

1

�

2

�

3

�

OLTOLT

ONUONU

ONUONU

ONUONU

Each ONU sends frames within assigned timeslot.Each ONU sends frames within assigned timeslot.All frames are broadcast

to each branch.All frames are broadcast to each branch.

Each ONU extracts the frames destined to each ONU selectively. (Other frames are discarded.)Each ONU extracts the frames destined to each ONU selectively. (Other frames are discarded.)

1300 1400 1500 1600

1260-1360nm

Wavelength(nm)

1480-1500nmUpstreamUpstream

Wavelength allocation in E-/B-/G-PON systemsWavelength allocation in EWavelength allocation in E--/B/B--/G/G--PON systemsPON systems

DownstreamDownstream

Operation of TDMOperation of TDM--based PONbased PON

Downstream

Upstream

COCO

CustomerCustomerPremisePremise

All frames are aligned so as to avoid collision.

Bidirectional transmission over single optical fiber

To split and combine optical signals

Optical splitterOptical splitter


Flavors of Flavors of PONsPONs

ONUONUOLTOLT

Ethernet frame

ATM cell

ONUONUOLTOLTEthernet frameEthernet frame

GTC frame

GEM frame

125 �s

ONUONUOLTOLT

Ethernet frameEthernet frameEthernet frame

ATM cell (53 byte)ATM cell (53 byte)

A fixedA fixed--length GTC frame consists length GTC frame consists of ATM cells and GEM frames.of ATM cells and GEM frames.

Frames except ATM cells Frames except ATM cells are contained in variableare contained in variable--

length GEM framelength GEM frame

EPON (IEEE)EPON (IEEE)

BB--PON (ITUPON (ITU--T)T)

GG--PON (ITUPON (ITU--T)T)

GEM: G-PON encapsulation methodGTC: G-PON transmission convergence

7


IEEE802.3 layering diagramIEEE802.3 layering diagram

PhysicalPhysical

Data LinkData Link

NetworkNetwork

TransportTransport

SessionSession

PresentationPresentation

ApplicationApplication

OSI Reference model IEEE 802.3 Layering diagram

MediumMedium

Physical Medium Dependent (PMD)Physical Medium Dependent (PMD)

Physical Medium Attachment (PMA)Physical Medium Attachment (PMA)

Physical Coding Sublayer (PCS)Physical Coding Sublayer (PCS)

ReconciliationReconciliation

Media Access Control (MAC)Media Access Control (MAC)

MAC ControlMAC Control

Logical Link ControlLogical Link Control

Scope of Scope of IEEE802.3 IEEE802.3

� IEEE 802.3 only covers physical layer and a portion of data link layer.� IEEE 802.3av mainly focuses on physical layer (PMD, PMA, PCS, and RS).

To be exact, IEEE802.3av slightly covers a portion of data link layer (MPCP).

Main scope ofMain scope ofIEEE 802.3avIEEE 802.3av

Gigabit Media Independent Interface (GMII)

Medium Dependent Interface (DMI)


EPON layering diagramEPON layering diagram

OLTOLTLLID #1 LLID #N

PMDPMDPMAPMAPCSPCS

RSRS

MACMACMPCPMPCP

OAM OAM

Mac ClientMac Client

PMDPMDPMAPMAPCSPCS

RSRS

MACMACMPCPMPCP

OAM OAM

Mac ClientMac Client

PCSPCS

RSRS

PMAPMA

PMDPMD

MACMACMACMACMPCPMPCP

OAM OAM OAM OAM Mac ClientMac Client Mac ClientMac Client

Optical fiberOptical fiberOptical fiber Optical fiberOptical fiberOptical fiberOptical splitterOptical splitterOptical splitter

ONU#1ONU#1 ONU#NONU#N

Logical link layer topology is point-to-point with the use of logical link IDs (LLIDs), although physical media topology is point-to-multipoint.

PointPoint--toto--pointpoint

PointPoint--toto--multipointmultipoint

8


Frame format in EPONFrame format in EPON

Preamble / SFDPreamble / SFD DestinationDestinationAddressAddress

SourceSourceAddressAddress TypeType DataData FCSFCS

0x550x55 0x550x55 0x550x55 0x550x55 0x550x55 0x550x55 0x550x55 0xd50xd5

0x550x55 0x550x55

EthernetEthernetEthernet

EPONEPONEPON SFD: Start of Frame DelimiterFCS: Frame Check SequenceSLD: Start of LLID DelimiterLLID: Logical Link IdentifierCRC8:8bit Cyclic Redundancy Check

8 octet 6 6 2 46 1500 4

0xd50xd5 0x550x55 0x550x55 LLIDLLID LLIDLLID CRC8CRC8

SLD

SFD

Format of frame preamble in EPON

LLID for logical topology emulation is embedded in the preamble portion of Ethernet frame (IEEE802.3 frame).


IEEE802.3av projectIEEE802.3av project

CFI : Call For Interest

What 10G-EPON ?

10x higher10x higher--speedspeed standard of IEEE802.3 EPON� IEEE 802.3av mainly focuses on physical layer for 10Gbps transmission.

(Formerly named “10Gbps PHY for EPON” )� Frame format, MAC, OAM are basically the same as IEEE802.3 EPON.

PAR : Project Authorization Request

Timeline

2006 20082007 2009

P802.3avP802.3av

Draft1.0 Draft2.0 Draft3.0 StdCFI PAR Draft0.9

Study Study GroupGroup Task force

Projectstart

Baseline proposal

1st draft Last feature

Last tech. change

Expected standard approval : September 2009Expected standard approval : September 2009

9


Objectives of IEEE802.3avObjectives of IEEE802.3av

�� Support subscriber access networks using point to multipoint topSupport subscriber access networks using point to multipoint topology on optical fiberology on optical fiber

�� PHYsPHYs to have a BER better than or equal to 10to have a BER better than or equal to 10--1212 at the PHY service interfaceat the PHY service interface

�� Provide physical layer specificationProvide physical layer specification��-- PHY for PON, 10Gbps downstream / 1Gbps upstream, single SM fibePHY for PON, 10Gbps downstream / 1Gbps upstream, single SM fiberr-- PHY for PON, 10Gbps downstream / 10Gbps upstream, single SM fibPHY for PON, 10Gbps downstream / 10Gbps upstream, single SM fiberer

�� Define up to 3 optical power budgets that support split ratios oDefine up to 3 optical power budgets that support split ratios of 1:16 and 1: 32, and f 1:16 and 1: 32, and distances of at least 10 and at least 20 km.distances of at least 10 and at least 20 km.

PR30 , PRX30PR20 , PRX2020kmPR20 , PRX20PR10 , PRX1010km

1:321:16

Fully compatible with existing Fully compatible with existing ODNsODNs

Asymmetric 10GAsymmetric 10G--EPONEPON Symmetric 10GSymmetric 10G--EPONEPON

10Gbps 10Gbps

10Gbps1Gbps


CoCo--existenceexistence

Co-existence issues are seriously considered in IEEE802.3av specifications: � Co-exist with deployed systems of 1G-EPON and RF video on the same ODN� Reuse of deployed optical distribution network (ODN)

(1) To co-exist with 1G-EPON and RF video, the followings are adopted: - Downstream : WDM (L-band)- Upstream : 10G/1G dual-rate TDMA

(2) For the reuse of deployed ODN, a new power budget class is specified: - PR/PRX30 (Loss budget : 29dB)

VV--ONUONU

1G1G//1G1GONUONU

10G10G//1G1GONUONU

10G10G//10G10GONUONUPONPON--OLTOLT

RFRF--VideoVideo

DualDual--raterateBurst RxBurst Rx

RF-Video (1.55mm)

10G (L-band)

1G (1.49mm)

10G(1.27mm)1G(1.31mm)

Downstream

Upstream

10


Main differences between 1GMain differences between 1G-- and 10Gand 10G--EPONEPON

1:16 / 1:32 (*1)1:16split ratio

mandatory RS(255, 223)

option RS(255, 239)

FEC

3(PR10 / PR20 / PR30)

2(PX10 / PX20)

# of power budget class

1575 ~ 1580 nm1480 ~ 1500 nmDS

US 1260 ~ 1280 nm (*2)1260 ~ 1360 nmwavelength

data rate (DS/US)10G/10G-symmetric

+ 10G/1G-asymmetric

64B66B(3%)

10G-EPON

1G/1Gbps-symmetric

8B10B(25%)

1G-EPON

channel coding(coding overhead)

(*1) only for PR/PRX30(*2) asymmetric 10G-EPON : 1260 ~ 1360 nm


P802.3avP802.3avDraft1.0 Draft2.0 Draft3.0 StdCFI PAR Draft0.9

AdAd--hoc activities in IEEE802.3avhoc activities in IEEE802.3av

Task ForceStudy Study GroupGroup

Wavelength AllocationWavelength Allocation

FEC FramingFEC Framing

HighHigh--splitsplit

Rate Increase AnalysisRate Increase Analysis

DualDual--rate PMDrate PMD

Jitter BudgetJitter Budget

Power SavingPower Saving

Power BudgetPower Budget

Power BudgetPower Budget

FECFEC

WavelengthWavelength

OthersOthers

2006 2008 20092007

11


Power budget (1)Power budget (1)

2006 2008 20092007

P802.3avP802.3av Draft1.0 Draft2.0 Draft3.0 StdCFI PAR Draft0.9

Task ForceStudy Study GroupGroup

Power BudgetPower Budget Long discussion on PR30 technologies

Parameter modifications

Main point of the argument : Main point of the argument : technologies for PR/PRX30 classtechnologies for PR/PRX30 class

(1) PIN-PD@ONU (w/o optical amp.@OLT)(2) APD@ONU (high-power EML@OLT)

Total optics cost

Two solutions were considered:

APD@ONU solution was adopted for PR/PRX30.

� Lower output power solution at OLT is preferable in terms of safety and crosstalk to RF-video systems

� Small footprint at OLT

3av_0709_hamano_1.pdf, IEEE 10G3av_0709_hamano_1.pdf, IEEE 10G--EPON Task ForceEPON Task Force



HP-DMLHP-DML

DMLDML

DMLDML

APD w/ FECAPD w/ FEC



EML+AmpEML+Amp

HP-EMLHP-EML


PIN w/ FECPIN w/ FEC

PIN w/ FECPIN w/ FEC

-28.5

+5 -20.5

+2 -20.5

25.5 dB

22.5 dB

+4 -28

-1 -28

-1 -24

32 dB

27 dB

23 dB

HP-EMLHP-EML +230.5 dBPR30

PR20

PR10

PR30

PR20

PR10

l = 1575 ~ 1580 nm

l = 1260 ~ 1280 nm

HP : High Power

HP : High Power

(1.5dB-Penely included)

(1.5dB)

(2.5dB)

(3dB-Penely included)

(3dB)

(3dB)

Downstream

Upstream

12



23273222.525.530.5Power budget [dB]

DMLDMLDMLEMLEML+SOAEMLTransmitter type

+4-1-1+2+5+2Tx min [dBm]

+9+4+4+5+9+5Tx max [dBm]

APDAPDAPDAPDPINPINReceiver type

666666ER [dB]

292420292420CIL [dB](*1)

-28-28-24-28.5-20.5-20.5Sens. [dBm]

PR30PR20PR10PR30PR20PR10

UpstreamDownstream

(*1) channel insertion loss (CIL) = power budget – path penalties


FECFEC

decoder

encoder

Circuit size(*1)

1681

1.1x10-31.8x10-41.8x10-4Required BERfor BER=10-12

25131.5

7.2 dG5.9 dB5.9 dBElectrical coding gain

10 Gbps10 Gbps1 GpbsBit rate

RS(255,223)RS(255,239)Code

RS(255,239) vs. RS(255, 223) Decoded BER characteristics

FEC was considered mandatory for 10G-EPON systems to relax optical transceiver specifications. In terms of practicality and simplicity, RS(255, 223) was chosen because additional 1 dB optical gain to conventional RS(255, 239) is necessary for PR/PRX30 power budget classes.

RS(255, 223) was adopted to obtain enough power margin for PR/PRX30.

(*1) 3av_0709_mandin_2.pdf, IEEE 10G3av_0709_mandin_2.pdf, IEEE 10G--EPON Task ForceEPON Task Force

13


Wavelength allocation (1)Wavelength allocation (1)

Cut-off wavelength

Possible DS wavelength : L-band

Restricted by the blocking filter property (G.984.5)

GE-PON (US) GE-PON (DS) Video OTDR

1.21 1.26 1.31 1.36 1.41 1.46 1.51 1.56 1.61 1.66 l

Possible Wavelength for 10G-EPON systems

Restricted by wavelength separation filter property

2006 2008 20092007

Wavelength AllocationWavelength Allocation Upstream

DownstreamPR10/20

PR30

Draft1.0 Draft2.0 Draft3.0 StdCFI PAR Draft0.9

Study Study groupgroup Task forceP802.3avP802.3av

1260~80

L-band1580~1600

1574~80 1574~80 1575~80


Wavelength allocation (2) : upstreamWavelength allocation (2) : upstream

Power penalties at 1.3�m-band

3av_0705_effenberger_3.pdf, IEEE 10G3av_0705_effenberger_3.pdf, IEEE 10G--EPON Task ForceEPON Task Force

Wavelength band in G.984.enh (G.985)

� FP-LD is not applicable to 10G-ONU even at 1.3�m-band.

A 20-nm bandwidth is enough for 10G-upstream wavelength band on the condition that DFB-LDs are adopted.

A 20-nm bandwidth is enough for 10G-upstream wavelength band on the condition that DFB-LDs are adopted.

� It is preferable that 10G-EPON PHYs are identical to ITU-T specifications.

� Dispersion penalty should be minimized.

1.26 1.28 1.36

PR10/20/30

20nm

�

Upstream wavelength band

100nm

PRX10/20/30

14


Wavelength allocation (3) : downstreamWavelength allocation (3) : downstream

Isolation : 35dB

1550

Guard band of BPF

1575

Video

1560 �1580

Downstream wavelength bandDownstream wavelength band

The specification of BPF in ONU to separate RF video signal:

�� The shortest wavelengthThe shortest wavelength is bound by the characteristics of the optical BPF. The guard band of the filter should be longer than 15nm.

Downstream wavelength band

1575 ~ 1580nm1575 ~ 1580nm for all PMD classes

�� The longest wavelengthThe longest wavelength is bound by conventional ITU-T recommendations such as G.982 and 983, in which the signal wavelength range shall be less than 1580nm. In addition, OTDR filter problem, which is operator-specific one, is not expected in this wavelength range


Tx Rx

RS

PCS

PMA

PMD

1G@1490nm

1G@1490nm

DualDual--rate PMD (1)rate PMD (1)

XGMII

802.3ah sublayers

802.3av sublayers

10G/1GMAC

1Gb/s Tx

Path

1Gb/s Rx

Path

10G/10GMAC

1G/1GMAC

Tx Rx

10Gb/s Tx

Path

10Gb/s Rx

Path

GMII

10G@1577nm

10G@1577nm

PCS and RS for dual-rate mode at OLT

RS maps downstream data from MAC instances to appropriate downstream path according to LLID. The operation for upstream data is similar to downstream direction.

Three kinds of MACs of 1G/1G, 10G/1G and 10G/10G are supported.

10G/1G@1270nm/1310nm

10G/1G@1270nm/1310nm

As dualAs dual--rate PMD, two solutions are considered.rate PMD, two solutions are considered.

15


10G TIA and LA

optical amplifier (optional)

1x2 splitter

DualDual--rate PMD (2)rate PMD (2)

10G detector

The incoming dual-rate signals from ONUs to PMD at OLT can be split in (a) optical domain, or (b) electrical domain.

1G TIA and LA1G detector

Dual-rate PD

Dual-rate TIA

1G LA

10G LA

Optical domain Electrical domain

� 3dB-loss in 1x2 splitter- Acceptable in PR10/20- Challenging in PR30

� Two dedicated Rx circuits

� Simple configuration� PD and TIA cope with both data

rates in quick succession, switching 1G and 10G bursts.


NextNext--generation access in ITUgeneration access in ITU--TT

The development of next-generation access (NGA) standards will be held in the next ITU-T study period from 2009 to 2012.

ITUITU--TTFSANFSAN

Existing ODN (no replacement and additional component)Existing ODN (no replacement and additional component)ODNODN

New ODNNew ODN

B/G-PON

Extended reach

TDM XG-PON(US: 2.5, 5, 10G / DS: 10G)

WDM overlay G-PON (US: 2.5, 5, 10G / DS: 10G)

Higher rate TDMDWDMOFDM…etc

NowNow ~2010~2010 ~2015~2015

NGA1NGA1 NGA2NGA2

Use of common equipmentCo-existence

16




3.3. Research activitiesResearch activities(a)(a) Optical transceiver technologiesOptical transceiver technologies(b)(b) Asymmetric system Asymmetric system (c)(c) Symmetric systemSymmetric system


5.5. SummarySummary

OutlineOutline


Optical transceiver technologies Optical transceiver technologies

ONU TransmitterONU TransmitterONU Transmitter

OLT ReceiverOLT ReceiverOLT Receiver

The latest reported results on optical transceiver technologies are as follows:

Main performance

� 6ns turn-on/off time� +3.3dBm output power

� 0.5ns response� +4.4dBm-output power

� AC-coupled differential interface using BLW-CMR techniqueNTTOFC’08

Applied technologiesReported at / from

� Impedance-controlled DC-coupled burst-mode LD driver circuitMitsubishiOFC’08

� Quad-rate samplingMitsubishiECOC’08� 72 bit CID tolerant CDR

� Burst-mode PIN-TIA � Automatic offset compensation

(2-stage)NTTECOC’07

� 10ns instantaneous response� -19.5dBm sensitivity� 20.5dB dynamic range

� Cascade-type burst CR circuitYokogawaECOC’08� 50ps synchronization time

Main performance

� 1.25/10.3-Gbps dual-rate burst-mode receiver

� 160bit CID tolerant CDR � Single-VCO architecture NTTECOC’07Applied technologiesReported at / from

� Two gate circuits� AC-coupled interface� No reset signals

NTTECOC’08

17


Asymmetric system Asymmetric system

� 2.5Gbps burst receiverNSNECOC’07� 10G/2.5Gbps demonstration� Downstream bit-stacking by using

electrical multiplexing Alcatel-LucentECOC’08� 10G/2.5Gbps GPON

coexistence for downstream

� DS synch-protection mapping� Electrical multiplexingFujitsuECOC’07� G-/10G-PON mixture system

� Seamless upgrade

Main performance� 10G/1G-EPON demonstration� 128-split, 10km-system ETRIIEEE802.3

CFI-’06.3


� DS: 10Gbps, US: 1Gbps� Split : 128� Distance : 10km

CFI, March 2006, IEEE 802.3CFI, March 2006, IEEE 802.3

Feasibility test Feasibility test of 10G/1Gof 10G/1G--EPONEPON


Symmetric system Symmetric system

� PR30 compliant burst-mode Tx/Rx� FPGA-based PON MACKDDIECOC’08� >9Gbps US throughput

� >30dB power budget (PR30)

� IEEE802.3 MPCPMitsubishiOECC’07� 9.7Gbps US throughput� 32-LLIDs

Main performance� 4Gbps US throughput� 23dB power budget w/o FEC

� XENPAK-based burst-mode Tx/Rx� FPGA-based PON MACKDDIECOC’05


OLT

ONU

ONU

Tx(DML)

Burst control signalONU-1

10GbEMAC

(FPGA)

10GbEMAC

(FPGA)XFPXFP

10G-EPONMAC

(FPGA)

10G-EPONMAC

(FPGA)Optical

Transceiver

Tx(DML)

RxWDMWDM

10GbEMAC

(FPGA)

10GbEMAC

(FPGA)XFPXFP

10G-EPONMAC

(FPGA)

10G-EPONMAC

(FPGA)Optical

Transceiver

Tx(EML)

Rx

OLT

WDMWDM

ONU-2

10G10G--EPON prototypeEPON prototype

18





4.4. Development statusDevelopment status(a)(a) ChipsetChipset(b)(b) Key devices for 10Gbit/s burstKey devices for 10Gbit/s burst--mode transmissionmode transmission(c)(c) Equipments for asymmetric 10GEquipments for asymmetric 10G--EPON systemEPON system

5.5. SummarySummary

OutlineOutline


CChipsethipset

The PAS8001 and PAS9001 deliver 10Gbit/s performance, pre-standard (draft 1.1) IEEE 802.3av compliance, 1G/10G co-existence with auto-detect, standard encryption, high-performance backward-compatible Dynamic Bandwidth Allocation (DBA) and commercially viable transceivers developed by a leading transceiver vendor partner.

PMC-Sierra

EPON chip vendors start the delivery of 10GEPON chip vendors start the delivery of 10G--EPON evaluation board.EPON evaluation board.

Teknovus’ 10G EPON evaluation board system (EVB) is compliant with the latest draft of the IEEE 802.3av 10G EPON standard. In addition to the IEEE 802.3av feature set, the 10G EPON EVB system supports triple-lambda wavelength-division multiplexing (WDM) downstream operation at 1.25G, 2.5G and 10G simultaneously.

Teknovus

Press Release (Mar. 31, 2008)http://investor.pmc-sierra.com/phoenix.zhtml?c=74533&p=irol-newsCorporateArticle&ID=1123318&highlight=

Press Release (Nov. 18, 2008)http://www.teknovus.com/page.cfm?PageID=200&CategoryID=14

19


Key devices for 10Gbit/s burstKey devices for 10Gbit/s burst--mode transmissionmode transmission

ONU TransmitterONU TransmitterONU Transmitter

OLT ReceiverOLT ReceiverOLT Receiver 10.3 Gbps quad-rate sampling burst-mode CDR

�XFP module size (78x18.3x8.2mm)�Output power : +7.0dBm�Extinction ratio : 7.1dB�Mask margin : 29%�Turn_on/off : 6/0 ns

�0.13�m SiGe BiCMOS�6.6x6.3mm size�1.9W power consumption

Quad-rate sampling IC

Burst response �CID : 72-bit �1st-bit burst-mode recovery

Courtesy Mitsubishi Electric CorporationCourtesy Mitsubishi Electric Corporation


Asymmetric 10GAsymmetric 10G--EPON systemEPON system

OLTOLTOLT

System featuresSystem featuresSystem features

� ATCA300 universal architecture� High-speed backplane � FPGA-based PON-MAC

Courtesy NECCourtesy NEC

� SFP-sized optical transceiver� Mesa-type APD� FPGA-based PON MAC

� Asymmetric 10G-EPON system (Downstream: 10Gbps, Upstream : 1Gbps)� Compliant with IEEE802.3av draft2.0 � Co-existence with 1G-EPON (IEEE802.3ah) � Loss budget (channel insertion loss) : > 30 dB� Maximum distance : 20km� 32 subscribers per PON interface� Superior QoS to subscribers and services

ONUONUONU

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5.5. SummarySummary

OutlineOutline


SummarySummary

Why 10G-EPON?

�� Optical feeders with bandwidth of 10Gbps are necessary for nextOptical feeders with bandwidth of 10Gbps are necessary for next--generation generation access system, and PON topology is expected to reduce CAPEX and access system, and PON topology is expected to reduce CAPEX and OPEX. OPEX.

Standardization

�� Draft2.2 was issued after November 2008 meeting, and the standarDraft2.2 was issued after November 2008 meeting, and the standard is d is expected to be approved in September 2009. expected to be approved in September 2009.

�� IEEE802.3av mainly focuses on physical layer specifications. IEEE802.3av mainly focuses on physical layer specifications.

Research and development activities

�� Feasibility studies on key components and systems have been repoFeasibility studies on key components and systems have been reported. rted. �� EPON chip vendors and system vendors have been developing evaluaEPON chip vendors and system vendors have been developing evaluation tion

boards and protoboards and proto--type systems.type systems.

Challenges toward commercial products

�� Reduction of cost, size, and power consumption of optical transReduction of cost, size, and power consumption of optical transceiversceivers�� Interoperability on optical transceiver and MAC chipInteroperability on optical transceiver and MAC chip

Documents

10G-EPON Standardization and Its Development Status...PR30 technologies Parameter modifications Main point of the argument : technologies for PR/PRX30 class (1) PIN-PD@ONU (w/o optical