Transcript PON Demonstrator Clock rate - Indico

ACEOLE
WP4 Status Report
Optical Transmission Systems for SLHC Experiments
Associated Partners:
Henrique Salgado INESC (P), Marco Van Ueffelen SCK.CEN (BE), Izzat Darwazeh
UCL (UK), Pentti Karioja VTT (FI)
Researchers:
Sergio Silva, Sarah Seif el Nasr, Spyros Papadopoulos, Ioannis Papakonstantinou,
Hans Versmissen
CERN Supervisors:
Jan Troska, Francois Vasey
01 October 2009
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Project Timeline
UCL
INESC
INESC
VTT
01 October 2009
[email protected]
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Optical links for Experiments
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Upstream
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Downstream
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01 October 2009
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Extract raw data from the
detector, feed processing
electronics situated in shielded
and accessible area
Distribute clock and control data
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Optical Link Components
Front End
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Low Mass & Volume
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COTS
Minimize material,
avoid metals
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10 Gbps
Non-magnetic, capable
of operating in a
magnetic field
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Back End
Requires replacement
of ferrite bead used in
laser bias network
Radiation Resistant
Bitrate determined by
ASICs: 5 – 10 Gbps
FE
01 October 2009
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BE
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Front End Transceiver, Versatile-TRx
J. Troska
CERN
Hans
GBTIA
ROSA
TOSA
GBLD
Sergio
Sarah
01 October 2009
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Laser Modelling, Sergio
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In order to aid the design of both the laser driver ASIC and the VTRx, a
device and package model has been made and parameters extracted for
several commercial laser diodes
Laser model coded in Verilog-A
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To be used in GBLD re-design eval.
01 October 2009
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In-house SFP+ PCB design, Sergio
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Starting from a commercial LDD from
Texas Instruments and using one of the
obtained device/pkg models, we have
designed an SFP footprint test board
PCB circuit simulations including the
laser model were carried out to confirm
the correct functionality of the board
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Including optimization of the
bias/matching network
PCB has just been submitted for
fabrication
01 October 2009
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Front-End TRx Testing, Hans
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Test methods for evaluation of Transceivers in
place, used routinely
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Stable and well documented, having been
successfully used by several new team members
Based on Laboratory instruments for eye diagram
measurement and FPGA-based BERT for BER
testing
Have tried several methods for comparison of
large amounts of data from different transceivers
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Settled on Radar/Spider plots for ease of visual
interpretation
01 October 2009
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TRx comparison, Hans
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Comparison between open and
closed modules shows very similar
results
Will compare with space-grade TRx
Will evaluate thermal and EMI
properties
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Radiation Testing: neutrons, Sarah
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Neutron Irradiation at Louvain-la-Neuve Cyclotron
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Goal: first survey of optoelectronics sub-components for VTRX
Aim to go as high in fluence as possible to observe ultimate device limits if
possible
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50MeV Deuteron beam on
Beryllium Target produces
neutrons
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Peak of energy distribution
at 23MeV, mean ~16.6MeV
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Front-End TRx Radiation test, Sarah
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Carried out Total Fluence test to SLHC levels
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Important to assess impact on overall system of using different device types
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20MeV neutrons at Louvain-la-Neuve Cyclotron, survey of a large number of devices
(SM & MM)
Good first test that shows the way to future testing
No clear best candidates emerged, most likely to survey SLHC environment
E.g. absolute responsivity pre-irradiation for PINs, forward voltage and its change in
Lasers
Will carry out at end-09 SEU test at fluxes beyond SLHC
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63MeV Protons at PSI, survey of a large number of devices (SM & MM)
01 October 2009
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Optical Link Architectures
Point-toPoint
Ioannis
Spyros
Point-toMultipoint
Passive Optical Network
01 October 2009
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PON System Specifications, Ioannis and Spyros
Property (General)
PON Demonstrator
Clock rate
40 MHz (ie LHC clock rate 40.08MHz)
Max distance
Up to 1000m
Encoding | Target BER
NRZ 8b/10b | <10-12
Splitting ratio
>32 up to power budget allowed
Frame Format
Commands + Trigger
BW Allocation Algorithm
Statistical Multiplexing
Property (Down|Up)
PON Demonstrator
Bit rate
1.6 Gb/s | 800 Mb/s
Latency
Fixed and Deterministic| To be determined
Received clock jitter
Able to drive a high-speed SERDES
01 October 2009
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PON Demonstrator, Ioannis and Spyros
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Our system is designed to support 64 slave
nodes
Only 2 slave nodes are used in the first
demonstration due to one FPGA platform and
number of evaluation board available
However, all features of a PON can be
demonstrated with this system
Both master and slaves are implemented on
the same Virtex 5 platform
Both physical layer and medium access
algorithm have been implemented
Master
Virtex 5
Slave1
Slave2
1km
splitters
01 October 2009
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Project Deliverables
UCL
INESC
INESC
VTT
01 October 2009
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Deliverables and Milestones
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Description
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D412
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D443
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M 41
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M 42
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M 44
M 45
M 46
W4n
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Month due
Report on extendibility of PON concept to HEP
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PASSIVE OPTICAL NETWORKS IN HIGH ENERGY PHYSICS EXPERIMENTS, I. Papakonstantinou, June 2009
Conference report on demonstration of PON protocol for HEP application
Documentation on hard, soft and firmware, system test results
Report on laser electrical impedance measurements and models
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LASERS ELECTRICAL IMPEDANCE MEASUREMENTS AND MODELS, S. Silva, Apr 2009
Report on proposed matching networks, recommendations to designers and experimental results
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MATCHING NETWORKS AND RECOMMENDATIONS TO DESIGNERS, S. Silva, Aug 2009
Report on analysis of high fluence test data and proposed methodology
Conference report on irradiation tests
Conference report on irradiation and reliability tests
Report on environmental, EMI and thermal impedance testing
Conference report with comparisons between different module types
Documentation on hard, soft and firmware, system test results
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PON implementation in soft and hardware
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PASSIVE OPTICAL NETWORKS IN PARTICLE PHYSICS EXPERIMENTS, I. Papakonstantinou, TWEPP Sep 2009
PON demonstrator with Versatile link components
Ready for irradiation testing
Ready for reliability testing
Ready to characterize
Ready to issue recommendations to package designers
Optoelectronics working group @ TWEPP workshop
TWEPP WORKSHOP, 21-25 Sep 2009, Paris.
01 October 2009
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http://indico.cern.ch/event/twepp09
[email protected]
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Training by Visiting Scientists
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15-16 June 2009
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John Mitchell, UCL
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The where, why and how of optical access
Under the bonnet of EPON, GPON and NG-PON
01 October 2009
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Secondment
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Sergio Silva @ INESC
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Spyros Papadopoulos @ UCL
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2-19 Dec 2008, 2-19 Mar 2009
26 Jan – 20 Mar 2009
Hans Versmissen @ VTT
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15 Oct – 11 Dec 2009
01 October 2009
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Presentations at TWEPP-09
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108 Passive Optical Networks in Particle Physics Experiments
PAPAKONSTANTINOU, Ioannis
115 Characterization of Semiconductor Lasers for Radiation Hard High
Speed Transceivers
SILVA, Sergio
119 The Versatile Transceiver Proof of Concept TROSKA, Jan
01 October 2009
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Credits
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Jan Troska, Luis Amaral, Spyros Papadopoulos, Ioannis
Papakonstantinou, Christophe Sigaud, Sergio Silva, Csaba Soos,
Pavel Stejskal
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Izzat Darwazeh, Pentti Karioja, John Mitchell, Henrique Salgado
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Many others
01 October 2009
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