IEEE802.3aq Channel model ad hoc Task 2: Timevarying study

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IEEE802.3aq Channel model ad hocTask 2
Time-varying study modal noise

• Teleconference notes, 4 August 2004
• Jonathan King

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Agenda

• attendees
• agree minutes of last meeting
• Summary of AINSI document describing basic tests
  and measurements simulating field environment -
  John Dallesasse, Emcore
• Measurement of time variance in MMF - Robert
  Coenen, Scintera
• Summary of polarization induced time variation
  in MMF - Yu Sun, Optium
• Summary of planned modeling of link and source
  temperature dependence - Petre Popescu, Quake
• Strawman standard link proposal - Jonathan King,
  Big Bear Networks
• next meeting date/time
• any other business

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1) Attendees

• Jonathan King, Big Bear Networks
• Piers Dawe, Agilent
• David Cunningham, Agilent
• Petre Popescu, Quake
• Petar Pepeljugoski, IBM
• John Dallesasse, Emcore
• Yu Sun, Optium
• Pete Hallemeier, Optium
• Joerg Kropp, Infineon
• Jesper Hanberg, Intel
• Andre Van Scheinel, Bookham
• Lars Thon, Aeluros
• Robert Coenen, Scintera
• John Jaeger, Big Bear Networks
• Tremant Maio, Analogue
• others ?

2) Minutes of last meeting - no issues raised
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3) Presentations

• a) and b) presentations from John Dallesasse and
  Robert Coenen postponed to next meeting (slides
  didn't get through to reflector).
• c) Summary of polarization induced time
  variation in MMF - Yu Sun
• Discussion following Connector loss
  needs to be included may need two link model
  scenarios - one with mode selective loss (MSL)
  and one without. Several participants have
  observed polarisation induced impulse response
  changes to occur without mode selective loss.
  Standard modal noise treatment may describe both
  lossy and non-lossy cases.
• d) Summary of planned modeling of link source
  temperature dependence - Petre Popescu
• Discussion following Fibre temperature
  changes are not expected to produce large or fast
  changes in modal delays does change modal power
  distribution due to phase change between
  overlapping modes. Largest contribution will
  come from temperature induced source wavelength
  changes, which result in polarisation evolution
  and modal power distribution in the fibre .
  Petre' will supply a 1 page description of
  planned modeling for the next meeting.
• e) Strawman standard link proposal - Jonathan
  King
• Discussion following Suggested additions
  to 'standard link' were
• Add fibre shaker position to diagram Add OFL
  loss and probability for each connector. There
  was support for a simpler 3 connector link, since
  for the same likelyhood of occurrence, the effect
  on path penalty of 2 connectors with large
  offsets would be worse than a larger number of
  connectors with smaller offsets.

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4) Next meeting

• Wednesday 11th August 9am PCT, 5pm UK

5) Any other business

• No issues raised