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IEEE802.3aq Channel model ad hoc Task 2: Time-varying study & modal noise

IEEE802.3aq Channel model ad hoc Task 2: Time-varying study & modal noise. Teleconference notes, 15 Sept 2004 Jonathan King. Agenda. attendees agree last meeting notes Update on activities Temperature variation impact on channel model - Petre Popescu Preliminary vibration experiments

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IEEE802.3aq Channel model ad hoc Task 2: Time-varying study & modal noise

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  1. IEEE802.3aq Channel model ad hocTask 2: Time-varying study & modal noise Teleconference notes, 15 Sept 2004 Jonathan King IEEE802.3aq Channel model ad hocTask 2: Time-varying study & modal noise

  2. Agenda • attendees • agree last meeting notes • Update on activities • Temperature variation impact on channel model - Petre Popescu • Preliminary vibration experiments • other business • next meeting date/time IEEE802.3aq Channel model ad hocTask 2: Time-varying study & modal noise

  3. 1) Attendees • Jonathan King, Big Bear Networks • Petre Popescu, Quake • Yu Sun, Optium • Robert Coenen, Scintera • Piers Dawe, Agilent • Andre Van Schyndel please let me know if you or your organization have been missed 2) Minutes of last meeting agreed - no issues raised IEEE802.3aq Channel model ad hocTask 2: Time-varying study & modal noise

  4. 3) a) Preliminary vibration experiments - Robert Coenen Initial experiments used a vibration table to shake a 7inch diameter fibre coil (total of ~10m fibre) vertically; vibration amplitude was 3-5mm; The envelope of a 5GB/s pulse train showed upto 3x frequency multiplication - this was seen for the case where the fibre loop was driven at a natural resonance frequency (20Hz). The amount of modulation observed was dependent on polarization. It was noted that at 20Hz a vibration amplitude of 3-5mm corresponds to about 4 times the maximum acceleration specified by GR-63-CORE. Jonathan King agreed to calculate vibration amplitude vs frequency for the acceleration levels described in GR-63-CORE. b) Temperature variation impact on channel model - Petre Popescu After consideration of the various mechanisms that affect channel response, the effect of temperature change is expected to be small; The effect of temperature driven change of laser mode partition noise and of polarization change requires further study. IEEE802.3aq Channel model ad hocTask 2: Time-varying study & modal noise

  5. 4) Other business It was suggested that use of the ftp site should be discontinued and documents transferred to the ieee contributions site 5) Next meeting • Wednesday 22nd Sept 9.30am PCT, 5pm UK IEEE802.3aq Channel model ad hocTask 2: Time-varying study & modal noise

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