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Re: [10GMMF] Connector offsets in Worst case model



Dear Dr. Kropp,

This is an excellent work. Your approach provides a statistical guideline of
the combination of offsets.  At this moment I have a question of the order
of the combination of 7, 5, 4 and 3.5 um. I think in the system with four
connectors, the first one maybe the most controllable one. Therefore, is it
reasonable to consider a combination of 3.5, 7, 5 and 4 um?

Thank you very much.

Best regards,

Yu

Yu Sun, Ph. D
Optium Corp.
Suite 505, 500 Horizon Dr.
Chalfont, PA 18914
Ysun@optiumcorp.com
Tel: 215-712-2445


-----Original Message-----
From: owner-stds-802-3-10gmmf@listserv.ieee.org
[mailto:owner-stds-802-3-10gmmf@listserv.ieee.org] On Behalf Of <Joerg-R.>
<Kropp>
Sent: Monday, August 09, 2004 5:38 AM
To: STDS-802-3-10GMMF@listserv.ieee.org
Subject: [10GMMF] Connector offsets in Worst case model

Jonathan and all,
in the conference call I stated that I will give a detailed explaination why
we proposed this special set of offsets.
We took the same Rayleigh distribution as it was done for the 10GbE -50Ám
multimode simulation (mean value about 3,6Ám and 7Ám offset with a
probability of 5%).
For the second offset we used the value which we get for two connectors
(with the same offset) with a combined probability of 5%.
For the third offset we used the value which we get for three connectors
(with the same offset) with a combined probability of 5%.
And similar for the fourth connector.
See the short presentation encl.
The resulting set of offsets is 7Ám, 5Ám, 4Ám (not 4,5Ám!) and 3,5Ám (not
3,0Ám!) and the overall probability (for exceeding this set of 4 offsets) is
p=0,04%, which seems to us as a resonable value for a worst case scenario.
Regards,
Joerg
 <<Connector Scenario for Worst Case proposal 2.ppt>>


Infineon Technologies Fiber Optics GmbH
MOD CE
Dr. Joerg-R. Kropp
Senior Staff Expert
Wernerwerkdamm 16
D-13629 Berlin / Germany
Phone -49-30-85400-4918
Fax     -49-30-85400-4900
Mail     joerg.kropp@infineon.com