25GSMFOpticsforNextGenerationEnterprise/Campus/DataCentreApplicationsp pp

Kohichi Tamura,OclaroD id L i L tDavidLewis,LumentumPeterJones,Cisco

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Supporters(alphabeticalbylastname):

JeffMaki,JuniperGaryNicholl,Cisco

Ghani Abbas,EricssonAmrikBains,Cisco Gary Nicholl, Cisco

MarkNowell,CiscoKenji Otobe SEI*

,VipulBhatt,InphiKeith Conroy MultiPhy KenjiOtobe,SEI

BharatTailor,SemtechAlan Tipper Semtech

KeithConroy,MultiPhyJohnDAmbrosia,DellMike Dudek Qlogic AlanTipper,Semtech

BrianWelch,LuxteraY h i Xi H i

MikeDudek,QlogicJanFilip,MaximKi hi Hi t O l Yaohui Xie,Huawei

YuXu,HuaweiKiyohisa Hiramoto,OclaroJonathanKing,FinisarScottKipp,BrocadeRyanLatchman,MACOM

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*SumitomoElectricDeviceInnovations,Inc.

Introduction Background:1. Adding25GESMFobjectivetoupcoming50GEprojectwasproposedduring

l l fl h bJulyplenaryflashmob. Result:Supportforthestandard,butmostpreferreddifferentproject

2. New Industry Connection Activity (ICA) announced in August.2. NewIndustryConnectionActivity(ICA)announcedinAugust. Topic:Considerpotentialfutureprojectsthatleverageserialelectrical/opticallanesignalingtechnologiesupto100Gb/sforuseinEnterprise/Campus/DataCentre applications Centreapplications.

Purposeofthispresentation:1. Tocontinuediscussionof25GESMFstandardaspartofICAonNextGenerationEnterprise/Campus/DataCentreapplications.

2 Seek input for starting project2. Seekinputforstartingproject

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LargeMarketDemandForSMFTransceivers

EthernetSFP+ModuleForecast

SFP+LR

LR>SRafter2018

SFP+SR

1. TrendreflectswiderangeofSMFapplications2. NeedforSMFstandardsfornextgenapplications

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ConsiderationsForSMFOpticsForNextGenEnterprise/Campus1. Technologiestoleverage

25GNRZfrom100GE(4x25G) 50GPAM4from400GEFR8/LR8 100GPAM4from400GEDR4

2. Serialoptics SerialopticshavelowercostandpowerperGbps thanparallel(WDM)

3. MatchASICportspeedA id b i d ti l l t i l lti l i Avoidgearboxingandopticalorelectricalmultiplexing.

Efficiency lowerpowerconsumption Reducedcomponents lowercost

SERDESgoingfrom10G 25G/50G

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TechnologyChoicesForNextGenSerialSMFTransceiversChoices 25G NRZ 50G PAM4 100G PAM4Choices 25GNRZ 50GPAM4 100GPAM4Productavailability (est.) 2015+ 2017+ 2018/19+?

Technology 25G Eth t 50G Eth t?Technologydevelopmentdriver(examples)

25G Ethernet 100G Ethernet Gen6 Fibre Channel

50GEthernet? 400G Ethernet Gen7 Fibre Channel?

400G Ethernet

500m:PSM4

Related opticalspecifications

500m:PSM4 2km:CWDM4 10km:32GFC,100GBASELR4 25km:100GBASEER4Lite 40km: 100GBASEER4 ER4Lite

400GBASEFR8/LR8 50GE? 64GFC?

400GBASEDR4

40km:100GBASEER4, ER4Lite

Reach(w/oFEC) 20km? FECnecessary FECnecessaryReach (w/FEC) 40km 10km? 2km?

Assessment 25GNRZ 50GPAM4 100GPAM4Difficulty (risk) Easy Moderate High High

Established technology >4xincreaseover10Gbps 100Gbps/ lowestincostPros Widerangeofapplications

Matches25GASICport Matches50GASICport andpowerperGbps

C Only2.5xincreaseover10Gbps OpticalPAM4hasmany

unknowns Hightechnicalchallengewithmany unknowns

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Cons unknowns Fewerapplicationsthan25GNRZ?

manyunknowns No100GSERDES(yet) Limitedapplications?

MatchingTransceiverToASICPortSpeed

Case1:ASICportspeedmatches transceiver

Case2:ASICportsMUXdinside transceivermatchestransceiver

rateinsidetransceiver(OMUXcase)

ASICAccess

Uplink

ASICAccess

Uplink

SFP

SFP

Access Aggregation

QS

OMUX4:1

Access AggregationAccess Aggregation

Case1bestforenterprise/campusnetworks?

Access Aggregation

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AvoidMUXanduseserialopticsforlowestcost&powerperGbps

SMFTransceiversConceptsFor25G/50GASICs

Technologybuildingblocks: ASICS: 25G/NRZ or 50G/PAM4 SERDES

TODAY POSSIBILITIESWITHNEXTGENERATIONASICS(NEARERTERM)

ASICS: 25G/NRZor50G/PAM4SERDES CDR: 25G/NRZand50G/PAM4CDRs MUX: 2:1MUX(2x25G/NRZto 1x50G/PAM4) AnalogE/O: 25Gbd

10Gtechnology

ASIC(10GSERDES)

ASIC(25GSERDES)

ASIC(50GSERDES)

NRZ NRZ NRZ NRZ

4 25G

NRZ PAM4 PAM4NRZ

1x10G

Elect.I/F Elect.I/F Elect.I/F

CDR

4x10G 1x25G

Elect.I/F

MUX2:1

2x25G

Elect.I/F

4x25G

Elect.I/F

PAM4CDR

1x50G

Elect.I/F

4x50G

Elect.I/F

4x25G

Opt.I/F

E/OE/O

Opt.I/F

CE/O

1 10G/ 1 25G/

Opt.I/F

(NRZ:PAM4)

E/O E/OCDR

Opt.I/F

CDR

E/O

1 50G/

E/O

PAM4CDR

E/O

MUX4:2(NRZ:PAM4)

Opt.I/F1x10G/

4x10G/

1x25G/

NRZ

NRZ

NRZ

1x50G/

PAM4

Opt.I/F

4x25G/

NRZ

1x50G/

PAM4

Opt.I/F

4x50G/

PAM4(New FF)

Opt.I/F

2x50G/

PAM4

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SFP+ QSFP+ SFP28 QSFP28DSFP28 SFP56 QSFP56

Existingmodule Newmodule

QSFP28(NewFF)

LRTransceiverComparison

LR TransceiverComparison 10GE 40GE 25GE? 50GE?

Size SFP+ QSFP+ SFP28 SFP56

Modulation NRZ NRZ NRZ PAM4

Lane scheme 1 x 10G 4 x 10G 1 x 25G 1 x 50GLanescheme 1x10G 4x10G 1x25G 1x50G

Power(1) 1W 3W 1W ?

mW/Gbps 100 75 40 ?p

Relativecost/Gbps 1 2.83.5(2)

LRTransceiverComparison

SFP+(10GE)57.5x13.55

QSFP+(40GE)72.4x18.35

DRV TOSATOSADRV

. 8.35

ROSATIATOSADRV

TOSADRV

TOSADRV OMUX

SFP28(25GE)57.5x13.55

TOSADRV

ROSATIA

DRV TOSA

ROSATIA

CDR

CDR

ROSATIA

ROSATIA

ROSATIA

OMUX

ROSATIACDR ROSATIA

Paralleloptics&WDMmakes40GEhi her in ost and po er per Gbps

Serialopticsmakes25GElowerint d Gb

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higherincostandpowerperGbps.costandpowerperGbps.

Conclusion/Discussion

1. 25GEisgoodchoiceasnextstepafter10GEforSMFtransceivers Suitableforcostsensitivemarketsthatdontneed40GE,50GE,or100GE100GE

2. Recentforecastsinclude25Gmodulesfordatacom andwireless

ERaround3%oftotalDatacom,except25GCPRIDatacom,except25GCPRI

Datacom: 25G40Gby2020 Datacom + CPRI: 25G 100G by 2020

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Reference:OvumTotalOCForecast20142020,Aug2015. Datacom +CPRI: 25G100Gby2020

Conclusion/Discussion(cont.)3. 25GESMFstandardconsiderations:1. 25GESMFneededtocomplete25GEthernetecosystem

PMD Lanes Reach StandardTwistedPair Single 30m 802.3bqPCB backplane Single IL

Thank YouThankYou

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