4 March 2009 francois.vasey@cern.ch 1

Versatile Link Project Description• 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

• Joint Project (CERN, Fermilab, Oxford, SMU)

FE BE

4 March 2009 francois.vasey@cern.ch 2

Project Structure and PartnersVersatile Link Project Steering Board

Spokesperson: F. Vasey

W1 - SystemLink to GBT

CERN, P. Moreira

W2 - Components

W1.1 – P2PSMU, J. Ye

W1.2 – P2M W1.3 – Mixed

W2.1 – Front-EndCERN, J. Troska

W2.2 – Back-EndFNAL, A. Prosser

W2.3 – PassiveOxford, C. Issever

11 Nov 2009 francois.vasey@cern.ch 3

Optical Eye Pattern Analysis

PRBS Pattern Synchronization

Jitter Decomposition and Analysis

Digital Signal Analyzer

0 2 4 6 8 10 12

0.000

10.000

20.000

Jitter (Deterministic and Total (Avg))

1310 nm, 3.125 Gbps, 8b/10bSeries1

Series2

Device NumberJi

tter

(ps)

0 2 4 6 8 10 12

0.00

10.00

20.00

Optical Modulation Amplitude (Stable)

1310 nm, 3.125 Gbps, 8b/10b

Series1

Device Number

OM

A (

uW

)Backend Transceiver

Back End Optical Technologies

4x4 Optical Engine Transceiver (6.25 Gbps/channel)SFP+ Single Channel TRx (10 Gbps)

SNAP12 Tx (2.7 Gbps/channel)

Versatile Link Future Phases

• Project Plan calls for Phase 2 to end in March, 2011. Phase 3 would beproduction readiness phase. • A “Phase 2B” has been discussed. This would bridge the period between the end of Phase 2and the beginning of a production readiness phase synchronized wit h LHC upgrades.• Possible Phase 2B Activities:

• 100 Gbps telecom products are driving the development of array optics. • FNAL already has begun investigating the use of existing array technologies for Versatile Link (SNAP 12, optical engines)• FNAL proposes to continue working with vendors of array technology to evaluate evolving products. • Activities would include design and development of test platforms, working with vendors to specify packaging options, test engineering, and component specification for these products.• FNAL has already worked with 2 vendors of such technology (NDAs are in place) and more are being contacted. We will be responsible for the support of reference test platforms for array transmitters and receivers for the Versatile Link project. Possible to submit this as a Generic R&D proposal .