RE: Equalization and benefits of Parallel Optics.
Brian,
The meeting minutes from July 1999 show the following voting for the 300 m
MMF PMD objectives:
For 300 m on MMF: Y=83, N= 3, A=8 (96% approval)
For 300 m on installed MMF: Y=33, N=53, A=14. (38% approval)
With this differential there was much more opposition to the word
"installed" than just from the PMD vendors. And eliminating the word
installed gave us very high support levels. I think that's because left our
options open.
Regards,
Paul Kolesar
----------
From: Lemoff, Brian [SMTP:brian_lemoff@xxxxxxxxxxx]
Sent: Wednesday, August 02, 2000 1:03 PM
To: stds-802-3-hssg@xxxxxxxx
Subject: RE: Equalization and benefits of Parallel Optics.
Roy,
At the Montreal meeting (July 1999), when the distance objectives
were
debated and voted upon, there weren't any claims that a serial
10-GBd PMD
could support 100m on installed fiber. The reason that the
objective
survived the vote was that at the time there were 2 proposed PMD
alternatives that could satisfy the objective: 1300 nm WWDM and
5-Gsym/s
PAM-5. The second multimode objective was first voted on as "300-m
over
installed MMF". While this had strong support from the system
vendors and
received over 60% of the vote, it failed to receive a 75% majority,
due to
opposition from PMD and fiber vendors who pointed out that 1300-nm
WWDM was
the only PMD that could support this objective. When the word
"installed"
was removed from the objective, the objective received the necessary
majority. It was understood at the time that this objective was
deliberately left ambiguous.
-Brian
***********************************************************************
Brian E. Lemoff, Ph.D.
Project Manager
LAN/MAN Optical Technologies
Agilent Laboratories
3500 Deer Creek Rd., MS 26M-9
Palo Alto, CA 94304-1392
phone: (650) 485-8957
FAX: (650) 485-3626
email: brian_lemoff@xxxxxxxxxxx
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