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The Versatile Link Feasibility Demonstration (Project phase II). Versatile Link. Francois Vasey , on behalf of the Versatile Link Team. Versatile Link Project. Off-Detector Commercial Off-The-Shelf (COTS) Custom Protocol. On-Detector Custom Electronics & Packaging Radiation Hard. - PowerPoint PPT Presentation
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Versatile Link
Versatile Link
The Versatile Link Feasibility Demonstration(Project phase II)
Francois Vasey, on behalf of the Versatile Link Team
Versatile Link
[email protected] on behalf of Versatile Link team 2
Versatile Link Project
● Optical Physical layer linking front- to back-end
● Bidirectional, ~5Gbps
● Versatile● Multimode (850nm) and Singlemode (1310nm) versions
● Point to Point and Point to Multipoint architectures
● Front-end pluggable module
● Joint Project Proposal submitted to ATLAS & CMS upgrade steering groups in 2007 and endorsed in 2008
● Project Kick-off: April 2008● Phase I: Proof of Concept (18mo)
● Phase II: Feasibility Study (18mo)
● Phase II: Consolidation (6mo)
● Phase III: Pre-production readiness (18mo)
On-DetectorCustom Electronics & Packaging
Radiation Hard
Off-DetectorCommercial Off-The-Shelf
(COTS)Custom Protocol
29 Sep 2011
Versatile Link
[email protected] on behalf of Versatile Link team 3
VL Versatility
Front-End VTRx Fibre Back-End TRx
EE laser, 1310nm SM LR-SFP+ TRx
VCSEL, 1310nm SNAP12’like Rx
InGaAs PIN, 1310nm Opto Engine Rx
VCSEL, 850nm MM SR-SFP+ TRx
GaAs PIN, 850nm SNAP12’like Tx,Rx, TRx
InGaAs PIN, 850nm
Opto Engine Tx, Rx, TRx
29 Sep 2011
Versatile Link
[email protected] on behalf of Versatile Link team 4
VL Options and feasibility in March 2011
Front-End VTRx Fibre Back-End TRx
EE laser, 1310nm
GBLD Drive current limitation
SM LR-SFP+ TRx
VCSEL, 1310nmCheck GBLD compliance Voltage
SNAP12’like RxSM Tx not (yet) available
InGaAs PIN, 1310nm Opto Engine RxSM Tx not (yet) available
VCSEL, 850nm
Check GBLD compliance Voltage
MM
RIA in cold at low dose rate
SR-SFP+ TRx
Tx OMA to meet power budget
GaAs PIN, 850nmResponsivity drop under irradiation
SNAP12’like Tx,Rx, TRxTx OMA to meet power budget
InGaAs PIN, 850nm Responsivity/Leakage to be confirmed
Opto Engine Tx, Rx, TRxTx OMA to meet power budget
29 Sep 2011
Versatile Link
[email protected] on behalf of Versatile Link team 5
Consolidation Phase: March-Sept 2011
● Consolidation Phase launched to address following issues:● Power budget
●In-detector fibre: Radiation Induced Attenuation in the cold
●Front-end Pin: Radiation Induced Responsivity Drop
●Back-end Tx: High OMA requirement downstream
● VTRx feasibility
●GBLD
●availability
●VCSEL compliance voltage
●Edge Emitter drive current
●Full prototype demonstration
● High Density Back-End Components Survey
29 Sep 2011
1
2
3
4
Versatile Link
[email protected] on behalf of Versatile Link team 6
Issue 1:Radiation-Induced Attenuation in the cold
● Optical Fibres will operate well under radiation in the cold
● See D. Hall’s talk, B5b
29 Sep 2011
Dose Rate:0.66 kGy(Si)/hr
A fibre is qualified if its total RIA is less than 1 dB
D. Hall et al
SM SM
MM MM
Versatile Link
[email protected] on behalf of Versatile Link team 729 Sep 2011
Issue 2: (1/2)Pin Radiation Induced Responsivity drop
Calorimeter Tracker J. Troska et al
Versatile Link
[email protected] on behalf of Versatile Link team 8
Issue 2: (2/2)Pin Radiation Induced Responsivity drop
● Only an issue at high fluences for MM GaAs Pin diodes● Calorimeter grade Versatile Link
●If MM
●use standard GaAs MM pins
●use COTS transmitter at backend
● Tracker grade Versatile Link
●If SM
●use InGaAs Pin
●use «COTS» transmitter (LR) at backend
●If MM
●use InGaAs Pin with upgraded transmitter at backend
29 Sep 2011
Versatile Link
[email protected] on behalf of Versatile Link team 9
Versatile Link System Specification
● Four Versatile Link flavours defined
● Power budget specified with margin for all flavours
● Jitter budget adapted from FC 4G standard
● Specs available as EDMS document CERN-0000090391
29 Sep 2011
Fibre Type Radiation Tolerance GradeCalorimeter-grade Tracker-grade
10 kGy, 5x1014 n/cm2 500 kGy, 2x1015 n/cm2,1x1015 h/cm2
SM
MM
Versatile Link
[email protected] on behalf of Versatile Link team 10
Back End components
● Can be COTS, except in Tracker grade MM(850nm) link
● Several SFP+ TRx modules successfully evaluated
● Parallel optics under evaluation
● See A. Prosser’s poster (optoelectronics and links)
29 Sep 2011
Fibre Type Radiation Tolerance GradeCalorimeter-grade Tracker-grade
10 kGy, 5x1014 n/cm2 500 kGy, 2x1015 n/cm2,1x1015 h/cm2
SM Min Tx OMA: -5.2dBm Min Tx OMA: -3.6dBm
MM Min Tx OMA: -3.2dBm Min Tx OMA: -1.6dBm
Versatile Link
[email protected] on behalf of Versatile Link team 11
COTS SM SFP+ TRx
29 Sep 2011
A. Prosser et al.
Measurement Norm
OMA -3.6 dBm*Rx Sensitivity -12.6 dBmExt. Ratio 3.0 dBTx. Eye Opening 60% of OMATx Rise Time 70 psTx Fall Time 70 psTx Total Jitter 0.25 of UITx Deterministic Jitter 0.12 of UIRx Total Jitter 0.34 of UIRx Deterministic Jitter 0.14 of UI
* Tracker Grade Version
OMA
Rx Sens
ER_Tx
Eye_Tx
1/Rise_Tx
1/Fall_Tx
1/TJ_Tx
1/DJ_Tx
1/TJ_Rx
1/DJ_Rx
Vendor 1Vendor 1Vendor 2Vendor 2Vendor 2Vendor 2Vendor 2Vendor 2Vendor 3Vendor 3
Versatile Link
[email protected] on behalf of Versatile Link team 12
MM Parallel Device Testing at 5 Gbps
29 Sep 2011
A. Prosser et al.
Versatile Link
[email protected] on behalf of Versatile Link team 13
Issue 3:GBLD ASIC availability
● GBLD-V3 assembled on VTRx:● Functional (marginally, with Zinput matching circuit)
● Drives VCSEL and Edge Emitter
● See C. Soos’ talk, B5b
● GBLD-V4 redesign● To be submitted in Nov 2011
● See G. Mazza’s poster (optoelectronics and links)
29 Sep 2011
Versatile Link
[email protected] on behalf of Versatile Link team 14
GBLD V3 + SM EEL
29 Sep 2011
C. Soos et al.
Versatile Link
[email protected] on behalf of Versatile Link team 15
GBLD V3 + MM VCSEL
29 Sep 2011
C. Soos et al.
Versatile Link
[email protected] on behalf of Versatile Link team 16
● Optical connector interface designed and fabricated using rapid 3D prototyping● Different materials
● Different designs
29 Sep 2011
Issue 4: (1/2)VTRx prototype demonstration
● Several VTRx prototype versions built and tested● SM, MM
● GBLD, TI-ONET LDD
● See C. Soos’ talk, B5b
Versatile Link
[email protected] on behalf of Versatile Link team 17
● SEU test of complete assembly● See J. Troska’s poster (optoelectronics and links)
● In-system performance being evaluated● A. Xiang, SMU
● Interfaces to higher system level being prepared● See P. Vichoudis’ talk, B5b
29 Sep 2011
Issue 4: (2/2)VTRx prototype demonstration
Versatile Link
[email protected] on behalf of Versatile Link team 18
SEU Test of VTRx prototype
● VTx
29 Sep 2011
● VRx
J. Troska et al.
SM
MM
Versatile Link
[email protected] on behalf of Versatile Link team 19
In System Performance of VTRx
● BER @ RT vs -30/+70● Uplink
● Downlink
29 Sep 2011
PRELIMINARYA. Xiang et al.
SM downlink
MM uplink
Versatile Link
[email protected] on behalf of Versatile Link team 20
VL project status, Sep 2011
29 Sep 2011
Front-End VTRx Fibre Back-End TRx
EE laser, 1310nm
GBLD Drive current OK
SM LR-SFP+ TRx
VCSEL, 1310nmGBLD compliance Voltage OK
Board-edge RxSM Tx not (yet) available
InGaAs PIN, 1310nm Opto Engine RxSM Tx not (yet) available
VCSEL, 850nm
GBLD compliance Voltage OK
MM
RIA in cold at low dose rate OK
SR-SFP+ TRx
Tx OMA to meet Tk power budget
GaAs PIN, 850nmResponsivity drop: Calo grade OK
Board-edge Tx,Rx, TRxTx OMA to meet Tk power budget
InGaAs PIN, 850nmAssembly to be confirmed: Tk grade
Opto Engine Tx, Rx, TRxTx OMA to meet Tk power budget
TKgrade
Calo&Tk
grade
Versatile Link Feasibility Demonstrated
Versatile Link
[email protected] on behalf of Versatile Link team
Fallbacks for Tk-grade back-end transmitters
● What if SM array transmitters cannot be found?● Use single channel transmitter in broadcast mode
● Must foresee addressability at GBLD, GBT or GBT-SCA level
● SM PLC splitters tested and found to be radiation resistant
● What if MM high power transmitters cannot be found?● Select SM
● We believe SM and MM parallel optics will be found
29 Sep 2011 21
oRx
oTx
oRx
oTx
oRx
oTx
oRx
oTx
oRx
oRxoRxoRx
oTxsplitter
oRx
oRx
oTx
oRx
oTx
oTx
oTx
oRxoRxoRx
oTx
oRx
Versatile Link
[email protected] on behalf of Versatile Link team 22
Towards Versatile Link Project Phase III
29 Sep 2011
Common R&D
Generic Tendering 2015(depending on users commitment)
Detector specific R&D 2020
VL Phase II
VL Phase III ● 5G low power VTRx for Tk application● Low power VCSEL driver,
small footprint package
● 10G opto engine VnTx for Calo application● Driver array, VCSEL array,
package
● TOSA (MM)
● ROSA (GaAs 850)
● Fibre (MM)
● TRx (MM-calo)
● Opto-engine (MM-calo)
Versatile Link
[email protected] on behalf of Versatile Link team 23
Conclusion
● Versatile Link feasibility demonstrated● Detailed specifications
● Components shortlist
● Irradiation test results
● VTRx prototype
● System demonstrators
● Cost book
● Versatile Link phase III defined● Completion of generic R&D
● Launch of detector specific R&D for 2020 applications
● Launch of generic tendering for 2015 applications, if commitment
● https://espace.cern.ch/project-versatile-link/public/
29 Sep 2011
Versatile Link
[email protected] on behalf of Versatile Link team 24
Credits
● CERN● Jan Troska, Vincent Bobillier, Spyros Papadopoulos, Christophe Sigaud, Csaba
Soos, Pavel Stejskal, Sarah Storey, et al.
● Fermilab● Alan Prosser, Mark Bowden, John Chramowicz, et al.
● Oxford● Todd Huffman, David Hall, Nick Ryder, Tony Weidberg, et al.
● Southern Methodist University● Annie Xiang, Andie Liu, Kent Liu, Jingbo Ye, et al.
29 Sep 2011
Versatile Link
[email protected] on behalf of Versatile Link team 25
Downstream Versatile Link Power Budget
● Tracker-grade back-end transmit power must be boosted to compensate radiation penalties
● Calorimeter-grade power budget compatible with COTS component specs
29 Sep 2011
