100G PAM4 DWDM QSFP28 传输解决方案 -100G DWDM PAM4 Why is this ’beauty’ gaining market share in DCI and Metro applications.docx

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1、A profitable and growing company with global reachGeographical footprintSmartoptics at a glanceFounded2006OwnershipStable ownership - Ignis A/S 2011 Profits reinvestedRevenuesUSD 23M 2018CEOMagnus GrenfeldtCertificationsBrocade, Cisco, IS09000, ISO 14000ProductsOpen optical networking solutions Opti

2、cal devices - transceiversLocationsNorwayOperations5 salesSwedenR&D, production, sales, managementUKSalesA6ooulpp blWdStandards and technologies for 100G Data Centre InterconnectROADM networksPoint-to-point linksdu2sOIF / CoherentQPSK8-QAM100G200G400G DWDMIEEE 8023ba /CR4, SR4t LR4100GCost effective

3、100G DWDMsolution needed!OIF / CoherentQPSK16-QAM100G200G DWDMDistance(km)02108060010 OOO- Data center interconnect- Metro network aggregation- Distributed accessWhat is PAM4?None Return to Zero (NRZ) Modulation25Gbits per25GHzsmdopticsPulse Amplitude Modulation5 4-levels (PAM4)1101100050Gbits per 2

4、5GHz100G PAM4 DWDM can be achieved two ways: Using 2 wavelengths with 25Gbs baud rate Using 1 wavelength with 50Gbs baud rateFacts about available PAM4 DWDM QSFP28Inphi CoIorZ only available PAM4 DWDM QSFP28 Support for 40 & 100 GbE Compatible with QSFP28 MSA (SFF-8665) Low power (5.0W) 100G DWDM tr

5、ansceiver over 2 wavelengths super-channel inside ITU IOOGHzgridJTC 4nd centerWavelenyth Low output power Requires high input powerOptical performance for PAM4 DWDM QSFP28Line system needed The transceiver cannot be connected back-to- back without amplification. Special considerations needed to mix

6、between legacy wavelengths and PAM4 wavelengths Limited dispersion toleranceLine system with tuneable dispersion compensation strongly recommended High OSNR requiredSimilar OSNR will also be required for other 25Gb/s formats (32G FC5 CPRI10 & 25G Ethernet)Conclusion: Special PAM4 line system needed

7、to address these parametersWhy does PAM4 DWDM fit for DCI and backhaul applications? Reduced cost8Price PAM4 DWDM VS Coherent IOOG (16QAM)100G Switch5 32 Ports1RU Reduced space Reduced power smor+opticsEmbedded optics reduces space compared to a transponder based solution. Typically 75% savingLess t

8、han 6 Watts total per 100G. Typically 75% savingProven technology with high volume deploymentsMainlyCoIorZQl 2016 Q2 2016 Q3 2016 Q4 2016 Ql 2017 Q2 2017 Q3 2017 Q4 2017(Slc) slUEdzsSource: LightCountingsmorropticsRequired features of an OpenSmQrtO 曲CSLine System designed to hand，PAM4Generic OLS fea

9、turesPAM4 Open Line System philosophy/ Fully open approach/ Support for any service/ Support for embedded DWDMDesired Client control features/ Automatic protocol detection/ Automatic power level measurement/ Automatic power level regulationDesired Line control features/ Automatic measure of fiber le

10、ngth/ Automatic setting of dispersion compensationsrQropicsTDCM TechnologiesBecause of narrow dispersion tolerance, tuneable dispersion is desirable for PAM4 deployments. Tuneable dispersion compensation (TDC) exists today in small formfactor but is channelized. Continuous tuneable DC is on experime

11、ntal stage and also very bulky, not possible to use inside a 1 U-box. The operation bandwidth of the TDC will be one of the major limitations of the system, because of the two lambdas in the PAM4 QSFP28 transceiverTDCM 100 GHz spacing operation bandwidthAvailable TDCM alternatives to suTDCM 100 GHzT

12、DCM tuned (g) 0 km- CfMlcenleftwlB9+ Allow support for mixed services andhigh bandwidth signals (400G ZR)pport PAM4 DWDMTDCM 50 GHz (with 25GHz Offset)TDCM tuned (S) 0 km- C-band center Wavelength+ Better distance dynamicsBandwidth narrowing as a result of TDCM tuningTDCM 100 GHzTDCM tuned 0 kmTDCM

13、100 GHzTDCM tuned 40 kmTDCM 100 GHzTDCM tuned 80 kmrr CObandSnter WavelengthWorks for PAM4 (400G ZR)r C *Md center WvngtWorks for PAM4 (400G ZR)Frequencyr Cand center Wweiength-25 GMZ *KGHIOoGHZFrequencyDoesn,t work for PAM4 (400G ZR)Evolution of PAM4PAM4 in high speed Client opticsOOSNQ O* 与。&与OOSM

14、QOptical interface Dupx LC connectorsmdopticsPAM4 in high speed Line optics400ZR is a standard that has been defined by the OPtiCallnteITIetWOrking FonJm (OIF) to secure interoperability between systems from different vendorsPreliminary specification for 400ZRParameterMin valueUnitTX Power-10dBmRX Sencitivity-20dBmOSNR Requirement26dBDispersion Tolerance-2400ps/nm100G PAM4 DWDM applicationsCooperate D