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16 Sep 200816 Sep 2008 [email protected]@cern.ch 11
Versatile Link Status ReportVersatile Link Status Report
F. Vasey on behalf of the project steering boardF. Vasey on behalf of the project steering board
With input fromWith input from
C. IsseverC. Issever
J. TroskaJ. Troska
J. YeJ. Ye
A. ProsserA. Prosser
16 Sep 200816 Sep 2008 [email protected]@cern.ch 22
Versatile Link Project DescriptionVersatile Link Project Description Optical Physical layer linking front- to back-endOptical Physical layer linking front- to back-end Bidirectional, ~5GbpsBidirectional, ~5Gbps VersatileVersatile
Multimode (850nm) and Singlemode (1310nm) versionsMultimode (850nm) and Singlemode (1310nm) versions Point to Point and Point to Multipoint architecturesPoint to Point and Point to Multipoint architectures
Phase 1: Proof of Concept based on tentative specificationsPhase 1: Proof of Concept based on tentative specifications
16 Sep 200816 Sep 2008 [email protected]@cern.ch 33
Workpackage AllocationWorkpackage Allocation
oRx
oTx
oRx
oTx
oRx
oTx
oRx
oTx
oRx
oRxoRxoRx
oTx
oRx
In detector
oTxoRxoTx
oRx
In detector
oTx
oRx
oTx
oRx
splitter
oTx
oRx
oTx
oRx
oTx
oRxIn detector
P2P System PON System BoBW
WP1.1 WP1.2 WP1.3
Front End Components
VTRx
WP2.1 WP2.2 WP2.3Back End Components
MRx
PON
TRx
TRx
HTx
Passive Components
Fibre
mux
splitPON
TRx
split
split
Project Management
CERN Fermilab Oxford
SMU
16 Sep 200816 Sep 2008 [email protected]@cern.ch 44
Deliverables and TimescalesDeliverables and Timescales Phase 1: Proof of Concept based on tentative specificationsPhase 1: Proof of Concept based on tentative specifications
Deliverables: Deliverables: a tentative specification based on past experiencea tentative specification based on past experience a non-exhaustive portfolio of components meeting (even partially) the a non-exhaustive portfolio of components meeting (even partially) the
tentative specification (SM and MM, P2P and P2MP)tentative specification (SM and MM, P2P and P2MP) a front end TRx prototype packagea front end TRx prototype package test bench(es) for components and systemstest bench(es) for components and systems preliminary irradiation test resultspreliminary irradiation test results preliminary functionality test results for components and systemspreliminary functionality test results for components and systems a set of recommendations for phase 2.a set of recommendations for phase 2.
Timescales:Timescales: 18 months for phase 1 18 months for phase 1 (Sep 09)(Sep 09) Phase 2 to be defined after 12 months (Apr 09)Phase 2 to be defined after 12 months (Apr 09)
Phase 2: Feasibility StudyPhase 2: Feasibility Study Detailed specifications based on user requirementsDetailed specifications based on user requirements Components and Variants ShortlistComponents and Variants Shortlist VTRx package definition and fabricationVTRx package definition and fabrication Systems and Architectures DemonstrationSystems and Architectures Demonstration
Phase 3: ProductionPhase 3: Production Specification freezeSpecification freeze Market SurveyMarket Survey Pre-ProductionPre-Production QualificationQualification ProductionProduction
55
a) VTRx Customisationa) VTRx Customisation Bi-directional Module with Bi-directional Module with
connector interfaceconnector interface Based upon an acknowledged Based upon an acknowledged
standardstandard Work with Industrial partner early-Work with Industrial partner early-
onon
Low Mass & VolumeLow Mass & Volume Minimize material, avoid metalsMinimize material, avoid metals
Non-magnetic, capable of Non-magnetic, capable of operating in a magnetic fieldoperating in a magnetic field
Requires replacement of ferrite Requires replacement of ferrite bead used in laser bias networkbead used in laser bias network
MM 850nm & SM 1310nm MM 850nm & SM 1310nm versionsversions
Work-planWork-plan1.1. Identified potential industrial Identified potential industrial
partnerpartner2.2. Test commercial parts of the type Test commercial parts of the type
we would like to customize (SFP+)we would like to customize (SFP+)✓ Evaluated standard 850nm and Evaluated standard 850nm and
1310nm SFP+ modules in early 1310nm SFP+ modules in early 20082008
✓ Evaluated VCSEL-based 1310nm Evaluated VCSEL-based 1310nm SFP+ modules in mid-2008SFP+ modules in mid-2008
3.3. Customize package to meet HEP Customize package to meet HEP needneed
4.4. Ask for CERN-specified parts to Ask for CERN-specified parts to replace standard onesreplace standard ones
Laser Driver, TIALaser Driver, TIA Laser (VCSEL or EEL), PIN Laser (VCSEL or EEL), PIN
photodiodephotodiode
WP2.1 status report, CERNWP2.1 status report, CERNVTRx
66
Major effort has been put into Major effort has been put into evaluating commercial SFP/+/XFP evaluating commercial SFP/+/XFP transceiver modulestransceiver modules
Functionality testing broken down Functionality testing broken down into three parts into three parts
Power ConsumptionPower Consumption Transmitter portionTransmitter portion Receiver portionReceiver portion
Testing of currently available Testing of currently available modules has led to starting to define modules has led to starting to define detailed performance specifications & detailed performance specifications & methodsmethods
For details, see presentation by Luis For details, see presentation by Luis AmaralAmaral
1310nm VCSEL-based SFP+ @ 5Gb/s
< 600mW/module
Magnetic-field tolerant bias-T @10Gb/s
Further signal integrity improvements possible
b) Functionality Testingb) Functionality Testing
77
Very Similar overall trendVery Similar overall trend ROSA (solid symbols) not ROSA (solid symbols) not
much worse than bare PINsmuch worse than bare PINs Several orders of magnitude Several orders of magnitude
difference in response difference in response between devicesbetween devices
BER independent of BER independent of Data-rateData-rate
Burst Errors observedBurst Errors observed max. 10-bits long in PINsmax. 10-bits long in PINs max. 00’s bits long in max. 00’s bits long in
ROSAsROSAs Error correction mandatoryError correction mandatory
Plans:Plans: Total Fluence testing of Total Fluence testing of
Laser, PINs and possibly Laser, PINs and possibly TIAs and Laser Drivers in TIAs and Laser Drivers in early 2009early 2009
Sin
gle
mod
e
• 60MeV protons at PSI• Flux 108p/cm2/s (1-2
orders of magnitude above SLHC Tk/Pix)
• Multiple device types from multiple Vendors, also with integrated TIA (ROSAs)
c) Radiation Testing SEUc) Radiation Testing SEU
16 Sep 200816 Sep 2008 [email protected]@cern.ch 88
a) Radiation tests of passive componentsa) Radiation tests of passive components Irradiated up to Irradiated up to 700 kGy700 kGy 4 4 multi-mode (MM) fibresmulti-mode (MM) fibres @ 850nm @ 850nm 1 1 single-mode (SM) fibresingle-mode (SM) fibre @ 1310nm (SMF28) @ 1310nm (SMF28) MM fused taper MM fused taper splittersplitter SM PLCC splitterSM PLCC splitter MM and SM LC-LC MM and SM LC-LC connectorsconnectors
Preliminary results (details see T. Huffman’s talk) 2 MM fibres and 1 SM fibre candidates
Survey of market for more MM fibres will continue Need more splitter tests Connector candidates identified
Overall: Very good progress made.Overall: Very good progress made.
WP2.3 status report, OxfordWP2.3 status report, Oxford Fibre
mux
split
16 Sep 200816 Sep 2008 [email protected]@cern.ch 99
MM fiber irradiation testMM fiber irradiation test
Ericsson 1
Ericsson 3
Infinicor
Ericsson 2
16 Sep 200816 Sep 2008 [email protected]@cern.ch 1010
b) Tests of mechanical properties of fibres startedb) Tests of mechanical properties of fibres started Until now un-irradiated SMF28Until now un-irradiated SMF28
Next test irradiated fibresNext test irradiated fibres
16 Sep 200816 Sep 2008 [email protected]@cern.ch 1111
c) Plans for the next six monthsc) Plans for the next six months Continue Continue market surveysmarket surveys
fibresfibres splitterssplitters
Prepare next Prepare next gamma radiation testgamma radiation test fibres at low and high dose ratesfibres at low and high dose rates SplittersSplitters passive tests passive tests
Setup Setup environmental testsenvironmental tests for fibres, for fibres, splitters and connectorssplitters and connectors
Continue Continue mechanical testsmechanical tests
16 Sep 200816 Sep 2008 [email protected]@cern.ch 1212
WP1.1 status report, SMUWP1.1 status report, SMU Deliverables in phase 1: Deliverables in phase 1:
Development of architecture demonstrators for P2P network on commercial Development of architecture demonstrators for P2P network on commercial transceivers.transceivers.
Development of test bench(es) for components and systemsDevelopment of test bench(es) for components and systems Development of test procedures.Development of test procedures.
The status:The status: SFP+ is chosen as candidate for Versatile Link standard (by Versatile Link SFP+ is chosen as candidate for Versatile Link standard (by Versatile Link
group).group). SFP+ carrier board has been designed and fabricated. With a loop-back SFP+ carrier board has been designed and fabricated. With a loop-back
(oTx to oRx via fiber) configuration, a 10 Gbps optical serial link has been (oTx to oRx via fiber) configuration, a 10 Gbps optical serial link has been demonstrated with AFBR-700SDZ (10Gb, 850 nm) from Avago. demonstrated with AFBR-700SDZ (10Gb, 850 nm) from Avago.
Equipment is in place for 10 Gbps tests:Equipment is in place for 10 Gbps tests: 12Gbps BERT.12Gbps BERT. 20GHz real-time scope with 8GHz differential probe. 20GHz real-time scope with 8GHz differential probe. O/E module with 12GHz bandwidth.O/E module with 12GHz bandwidth. Sampling scope with 10GHz optical, 50 GHz electrical input modules.Sampling scope with 10GHz optical, 50 GHz electrical input modules.
New collaborator (IPAS) has been added to this work package.New collaborator (IPAS) has been added to this work package. The plan for the next 6 months:The plan for the next 6 months:
With equipment in lab, and commercial transceivers, a full P2P network of With equipment in lab, and commercial transceivers, a full P2P network of 10 Gbps will be demonstrated. 10 Gbps will be demonstrated.
With Stratix II GX programmed as the BERT (signal generator and bit error With Stratix II GX programmed as the BERT (signal generator and bit error rate checker), a portable 6 Gbps test bench will be developed. rate checker), a portable 6 Gbps test bench will be developed.
Tests will be carried out with the 12 Gbps BERT and with Stratix II GX based Tests will be carried out with the 12 Gbps BERT and with Stratix II GX based test bench. Testing procedures will be studied and defined through this test bench. Testing procedures will be studied and defined through this process. process.
oTxoRxoTx
oRx
In detector
P2P
16 Sep 200816 Sep 2008 [email protected]@cern.ch 1313
The SFP+ carrier board for 10 Gbps The SFP+ carrier board for 10 Gbps signalsignal
Top Layer Bottom Layer
Ground Layer Power Layer
16 Sep 200816 Sep 2008 [email protected]@cern.ch 1414
Preliminary test resultsPreliminary test results Eye diagram tests at 3, 5, 8 and 10 Gbps.Eye diagram tests at 3, 5, 8 and 10 Gbps.
BER tests at 5 and 10 Gbps. BER is found to be bettet than 3E-14 at 10 Gbps.BER tests at 5 and 10 Gbps. BER is found to be bettet than 3E-14 at 10 Gbps.
The board works at 10 Gbps, but there are issues that needs more careful The board works at 10 Gbps, but there are issues that needs more careful studies.studies.
3 Gbps
10 Gbps
5 Gbps
8 Gbps
Bathtub curve at 5 Gbps Bathtub curve at 10 Gbps
16 Sep 200816 Sep 2008 [email protected]@cern.ch 1515
Fermilab Has Joined the Project
Work Plan Submitted and Approved
Presentation at Project Meeting (14-9-2008)
3 Month Plan
Document and Communicate Test StrategyComponentsProceduresEquipment
6 Month Plan
Procure Samples of Selected ComponentsTest Lab ConfigurationBegin Testing Following Documented Procedures
WP2.2 status report, FermilabWP2.2 status report, FermilabMRx
PON
TRx
TRx
HTx
PON
TRx
16 Sep 200816 Sep 2008 [email protected]@cern.ch 1616
ConclusionConclusion Phase 1: Proof of Concept based on tentative specificationsPhase 1: Proof of Concept based on tentative specifications
Status after 6 months: Status after 6 months: a tentative specification based on past experiencea tentative specification based on past experience a non-exhaustive portfolio of components meeting (even a non-exhaustive portfolio of components meeting (even
partially) the tentative specification (SM and MM, P2P partially) the tentative specification (SM and MM, P2P and P2MP)and P2MP)
a front end TRx prototype packagea front end TRx prototype package test bench(es) for components and systemstest bench(es) for components and systems preliminary irradiation test resultspreliminary irradiation test results preliminary functionality test results for components and preliminary functionality test results for components and
systemssystems a set of recommendations for phase 2.a set of recommendations for phase 2.