gpon-extender (eng)
DESCRIPTION
Presentation of the GPON-ExtenderTRANSCRIPT
Making possibleThe Information Society
© 2009 TELNET-RI
GPON ExtenderGPON Extender
Adolfo García Yagüe ~ [email protected]ón 1.0 ~ Noviembre 2009
© 2009 TELNET-RI
FeaturesFeatures
GPON signal Range Extender to up to 60km– Version 1:1– Version 1:4 (New)
Regenerates 1310nm and 1490nm signals and amplifies 1550nm lambda Can work in standalone modeSupports in-band management via OMCIAlternative to RSOA technology-based PON extendersIt is possible to chain several repeaters in cascadeEDFA optical amplifier with low noise factorEDFA configurations in booster and preamp mode
1:1
1:4
© 2009 TELNET-RI
OLT
Splitter
ONT
ONT
ONT
ONT
>20km
OLT
SplitterONT
ONT
ONT
ONT
>20km >20km 0-20km
OLT
Splitter
ONT
ONT
ONT
ONT
>20km >20km >20km
IncreaseSplitting Ratio
IncreaseDistance
Distance+
Splitting Ratio
Cascade topologiesCascade topologies
© 2009 TELNET-RI
OLT
Splitter
ONT
ONT
ONT
>20km Splitter
ONT
ONT
ONT
ONT
0-20km
OLT
Splitter
>20km
0-20km
SplitterONT
ONT
ONT
ONT
0-20km
Splitter
ONT
ONT
ONT
ONT
ExtendPost-Splitter
ParallelExtenders
Parallel topologiesParallel topologies
© 2009 TELNET-RI
Splitter0-20km
Splitter
ONT
ONT
ONT
ONT
0-20km
Splitter
ONT
ONT
ONT
ONT
OLT>20km >20km
Hybrid topologiesHybrid topologies
© 2009 TELNET-RI
Benefits of GPON-ExtenderBenefits of GPON-Extender
TechnicalTechnicalIncrease GPON distanceImprove signal qualityExtends1550nm CaTV/IPTV signalIncrease Splitting Ratio > 256Parallel and cascade configuration possibleWDM => Reduction of fiber in Trunk PON
BusinessBusinessReduce the number of plants with OLT equipmentCovering more customers with the same infrastructureReduce network CAPEXIncreasing the number of subscribers per OLTReduce PON deployment costsAbility to reach second phase deployments fasterOVERSPLITTING!
© 2009 TELNET-RI
GPON
OMCI managementOMCI management
ONT chip embedded in GPON Extender– Interoperable– No need for complete provisioning– OMCI Channel– Dedicated entities– Does not reduce sensitivity of regeneration
components: Electronic interconnection, not optical
OMCI management supported– According to ITU-T G.984.4 Amd 1– Reach Extender entities– Entities present according to configuration
of the equipment
© 2009 TELNET-RI
Aggregator
+
Combiner
Extender BoxExtender Box(OMCI managed)(OMCI managed)
SFP Control (insertion, Txon, PowTX, PowRX)
uPuP Latency valuesTDS= 10ns
TUS= 3nsGPON
GPON Extender 1:4
4 PON branches, at full power1 Splitter savingNo splitting losses
Service from 1 Extender to 256 clients
© 2009 TELNET-RI
SFP/SFF Optical componentsSFP/SFF Optical components
Two modes of supply– SFF Modules (optical parts welded)– SFP Modules (removable optical parts)
(Identical optical characteristics of sensitivity)
Advantages of using SFPs– Facilitates evolution to1:4 (reuse of SFPs)– Modularity, response to component failures– Flexibility in change/evolution of lambdas– Single-fiber/bi-fiber– Modules manufacturer independent– B+ or C+ optics– DWDM in PON Trunking
© 2009 TELNET-RI
DWDM PON TrunkingDWDM PON Trunking
OLTOLTOLTOLT
OLTOLTOLTOLT
OLTOLTOLTOLT
Splitter
ONUONU
ONUONU
ONUONU
Splitter
ONUONU
ONUONU
ONUONU
Splitter
ONUONU
ONUONU
ONUONU
Splitter
ONUONU
ONUONU
ONUONU
1λ
2λ
3λ3λ
2λ
1λ
Mux DWDM
Allows the operator to maximize the use of fibers in the PON network backboneIntegrated GPON-Extender/DWDM solution with TELNET equipment
INTERF AZ 2TERFAZ 2
INTERF AZ 2TERFAZ 2
DWDM(Up to100Km)
Mux DWDM
© 2009 TELNET-RI
Timing Parameters
Tx & Rx Parameters
EDFA Parameters
GPON Extender Physical SpecsGPON Extender Physical Specs
Parameter Symbol Min Typ. Max Units CommentRatio Hi/Lo Hi/Lo 15 dB Depends on ONT signal quality
Interpacket Space Tg 25 ns Guard time depending on Hi/Lo ratio
Burst stabilization time
Ts 8 Ns Depends on Hi/lo y Tg
GPON Extender Latency Downstream
Tds 9 ns
GPON extender Latency Upstream
Tup 2 ns
Parameter Value CommentsRX Downstream Sensitivity -28/-8 dBm BER @ ONU = 10E-12RX Upstream Sensitivity -26/-10 dBm BER @ OLT=10E-10Downstream Tx Power +2dBm
Uptream Tx Power -6/-3/+1 dBm Configurable on SNMPUpstream Extinction Ratio > 20dB
Parameter Min Typ. Max Units CommentsOutput Power +10 dBm
Nominal Gain 20 dB SNMP Configurable
Input Range -30 -4 dBm
Noise Factor(NF) 5 dB
© 2009 TELNET-RI
GPON Extender Management Optical modules WDM EDFA 1550
1:1 SFF OMCI/SNMP/No SFF No No
1:1 SFP OMCI/SNMP/No SFP Yes No
EDFA 1:1 SFF OMCI/SNMP/No SFF No Yes
1:4 SFF OMCI/No SFF No No
1:4 SFP OMCI/No SFP Yes No
Micro SAE1 GPON Extender
MetroSAE12 GPON Extender (x4)
GPON Extender FamilyGPON Extender Family
TriSAE3 GPON Extender
Making possibleThe Information Society
© 2009 TELNET-RI
Thanks for your attention.www.telnet-ri.es