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|From:||Jeff Maki <jmaki@xxxxxxxxxxx>|
|Date:||07/09/2008 10:11 PM|
|Subject:||Re: [802.3BA] XR ad hoc Phone Conference Notice|
I believe our current objective of “at least 100 meters on OM3 MMF” should remain as a primary goal, the baseline. Support for any form of extended reach should be considered only if it does not compromise this primary goal. A single PMD for all reach objectives is indeed a good starting premise; however, it should not be paramount. In the following lists are factors, enhancements, or approaches I would like to put forward as acceptable and not acceptable for obtaining extended reach.
1. Cost increase for the baseline PMD (optic) in order to obtain greater than 100-meter reach
2. EDC on the system/host board in any case
3. CDR on the system/host board as part of the baseline solution
4. EDC in the baseline PMD (optic)
5. CDR in the baseline PMD (optic)
1. Use of OM4 fiber
2. Process maturity that yields longer reach with no cost increase
In summary, we should not burden the baseline solution with cost increases to meet the needs of an extended-reach solution.
Jeffery J. Maki, Ph.D.
Principal Optical Engineer
Juniper Networks, Inc.
1194 North Mathilda Avenue
Sunnyvale, CA 94089-1206