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SUMMARY:Modulator Based High Bandwidth Optical Links for HEP Experiments
DTSTART;VALUE=DATE-TIME:20120503T180000Z
DTEND;VALUE=DATE-TIME:20120503T190000Z
DTSTAMP;VALUE=DATE-TIME:20130522T124552Z
UID:indico-contribution-11@cern.ch
DESCRIPTION:Speakers: UNDERWOOD\, David (Argonne National Laboratory (US))
 \, STANEK\, Bob (Argonne National Laboratory (US))\, Dr. FERNANDO\, Waruna
  (Argonne National Laboratory)\nOptical links will be an integral part of 
 intelligent tracking systems at various scales from coupled sensors throug
 h intra-module and off detector communication.  These links  will be parti
 cularly useful if they utilize light modulators which are very small\, low
  power \, high bandwidth\,  and are very rad-hard.   \n\n   Because of con
 cern with the reliability\, bandwidth\, power\, and mass of future optical
  links in LHC experiments\, we are investigating the use of CW lasers  ext
 ernal to the tracking\, along with light modulators at the detector\, as a
 n alternative to VCSELs.\n\n  We have constructed a test system with 3 suc
 h links\, each operating at  10 Gb/s.   We present the quality of these li
 nks (jitter\, rise and fall time) and eye mask margins (10GbE) for 3 diffe
 rent types of modulators: \nLiNbO3-based\, InP-based\, and Si-based. \n\n 
   We present the results of radiation hardness measurements with up to ~10
 ^12 protons/cm^2 and ~65 krad total ionizing dose (TID)\, confirming no si
 ngle event effects (SEE) at 10Gb/s with all 3 types of modulators.\n\n  In
  addition we present results on free space data links\, utilizing \nsteeri
 ng by MEMS mirrors and optical feedback paths for the control loop. Laser\
 , modulator\, and lens systems used are described\, as well as two differe
 nt electronic systems for a free space steering feedback loop. Results at 
 10 Gb/s are shown.\n\nSome future developments of optical modulator-based 
 high bandwidth \noptical readout systems\, and applications based on both 
 fiber and \nfree space data links\, such as local triggering and data read
 out \nand trigger-clock distribution\, are also discussed.\n\nhttp://indic
 o.cern.ch/contributionDisplay.py?contribId=11&sessionId=6&confId=154525
LOCATION:INFN Pisa
URL:http://indico.cern.ch/contributionDisplay.py?contribId=11&sessionId=6&
 confId=154525
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