2. The average wavelength is 850.6; worst case 845.7
3. The average OMA power is -1.41; worst case -2.42
Using these numbers in the IEEE model yields 4.9 dB of margin at 400m.
Using these numbers in the IEEE model yields 2.6 dB of margin at 550m.
Steven E.
Swanson
Corning Incorporated
800 17th Street NW,
HI/ES
Hickory, NC 28603-0489
t 828-901-5328
f 828-901-5533
c
607-725-1129
swansonse@xxxxxxxxxxx
From: Swanson, Steven E [mailto:SwansonSE@xxxxxxxxxxx]
Sent: Monday, August 15, 2011 10:50 AM
To: STDS-802-3-MAINT@xxxxxxxxxxxxxxxxx
Subject: Re: [802.3_MAINT] Follow up on proposed Comment to add distance specification for 10GBASE-S over OM4 media
2. The average wavelength is 849.4; worst case 845.7
3. The average OMA power is -1.24; worst case -2.42
Using these numbers in the IEEE model yields 5.2 dB of margin at 400m.
Using these numbers in the IEEE model yields 3.3 dB of margin at 550m.
The more I look at this, I think we are being REALLY, REALLY conservative in IEEE, maybe too much so; here is the distribution of spectral width:
Steven E.
Swanson
Corning Incorporated
800 17th Street NW,
HI/ES
Hickory, NC 28603-0489
t 828-901-5328
f 828-901-5533
c
607-725-1129
swansonse@xxxxxxxxxxx
From: Matt Traverso (mattrave) [mailto:mattrave@xxxxxxxxx]
Sent: Thursday, July 28, 2011 9:05 PM
To: STDS-802-3-MAINT@xxxxxxxxxxxxxxxxx
Subject: [802.3_MAINT] Follow up on proposed Comment to add distance specification for 10GBASE-S over OM4 media
Hello to the now very active IEEE Maintenance
reflector!
As I mentioned during my presentation at the IEEE plenary in
July I would like to schedule a few calls to follow up on the questions/comments
raised during the meeting. (see http://www.ieee802.org/3/maint/public/traverso_1_0711.pdf)
My goal for these calls per the discussion on the floor is to
try to build more confidence in the proposed reach value. I believe that
there was broad consensus at the meeting that (a) goal of specifying value is
worthwhile,(b) theoretical analysis was sound. I hope to confirm my
perception at the first call & discuss further justification for 400m
reach.
My intention is to submit a comment by the comment deadline
of Aug 26th.
Call timing:
Wednesday Aug 10th, 10 – 11:30 am PT
Wednesday Aug 17th , 10 – 11:30 am
PT
Meeting login details below
best regards
--matt traverso
-+-----+-----+-----+-----+-----+-----+-----+-----+-
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