ACEOLE WP 4 Status Report Optical Transmission Systems

ACEOLE WP 4 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 francois. vasey@cern. ch 0

Project Timeline UCL INESC VTT 01 October 2009 francois. vasey@cern. ch 1

Optical links for Experiments n Upstream n n Downstream n 01 October 2009 francois. vasey@cern. ch Extract raw data from the detector, feed processing electronics situated in shielded and accessible area Distribute clock and control data 2

Optical Link Components Front End n n Low Mass & Volume n COTS Minimize material, avoid metals n 10 Gbps Non-magnetic, capable of operating in a magnetic field n n 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 francois. vasey@cern. ch BE 3

Front End Transceiver, Versatile-TRx J. Troska CERN Hans GBTIA ROSA TOSA GBLD Sergio Sarah 01 October 2009 francois. vasey@cern. ch 4

Laser Modelling, Sergio n n 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 n To be used in GBLD re-design eval. 01 October 2009 francois. vasey@cern. ch 5

In-house SFP+ PCB design, Sergio n n 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 n n Including optimization of the bias/matching network PCB has just been submitted for fabrication 01 October 2009 francois. vasey@cern. ch 6

Front-End TRx Testing, Hans n Test methods for evaluation of Transceivers in place, used routinely n n n 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 n Settled on Radar/Spider plots for ease of visual interpretation 01 October 2009 francois. vasey@cern. ch 7

TRx comparison, Hans n n n Comparison between open and closed modules shows very similar results Will compare with space-grade TRx Will evaluate thermal and EMI properties 8

Radiation Testing: neutrons, Sarah n Neutron Irradiation at Louvain-la-Neuve Cyclotron n n 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 s De e ut n ro ● 50 Me. V Deuteron beam on Beryllium Target produces neutrons ● Peak of energy distribution at 23 Me. V, mean ~16. 6 Me. V 9

Front-End TRx Radiation test, Sarah n Carried out Total Fluence test to SLHC levels n n Important to assess impact on overall system of using different device types n n 20 Me. V 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 n 63 Me. V Protons at PSI, survey of a large number of devices (SM & MM) 01 October 2009 francois. vasey@cern. ch 10

Optical Link Architectures Point-to. Point Ioannis Spyros Point-to. Multipoint Passive Optical Network 01 October 2009 francois. vasey@cern. ch 11

PON System Specifications, Ioannis and Spyros Property (General) PON Demonstrator Clock rate 40 MHz (ie LHC clock rate 40. 08 MHz) Max distance Up to 1000 m Encoding | Target BER NRZ 8 b/10 b | <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 francois. vasey@cern. ch 12

PON Demonstrator, Ioannis and Spyros n n n 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 Slave 1 Slave 2 1 km splitters 01 October 2009 francois. vasey@cern. ch 13

Project Deliverables UCL INESC VTT 01 October 2009 francois. vasey@cern. ch 14

Deliverables and Milestones # n Description D 411 n n D 412 D 413 D 421 n n D 422 n n D 431 D 432 D 433 D 441 D 442 D 443 n M 41 n n n M 42 M 43 M 44 M 45 M 46 W 4 n n Month due Report on extendibility of PON concept to HEP 6 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 24 34 6 LASERS ELECTRICAL IMPEDANCE MEASUREMENTS AND MODELS, S. Silva, Apr 2009 Report on proposed matching networks, recommendations to designers and experimental results 12 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 12 24 36 PON implementation in soft and hardware 9 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 18 12 24 6 19 12, 24, 36 http: //indico. cern. ch/event/twepp 09 francois. vasey@cern. ch 15

Training by Visiting Scientists n 15 -16 June 2009 n John Mitchell, UCL n n The where, why and how of optical access Under the bonnet of EPON, GPON and NG-PON 01 October 2009 francois. vasey@cern. ch 16

Secondment n Sergio Silva @ INESC n n Spyros Papadopoulos @ UCL n n 2 -19 Dec 2008, 2 -19 Mar 2009 26 Jan – 20 Mar 2009 Hans Versmissen @ VTT n 15 Oct – 11 Dec 2009 01 October 2009 francois. vasey@cern. ch 17

Presentations at TWEPP-09 n n n 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 francois. vasey@cern. ch 18

Credits n Jan Troska, Luis Amaral, Spyros Papadopoulos, Ioannis Papakonstantinou, Christophe Sigaud, Sergio Silva, Csaba Soos, Pavel Stejskal Izzat Darwazeh, Pentti Karioja, John Mitchell, Henrique Salgado n Many others n 01 October 2009 francois. vasey@cern. ch 19