FW: proposed experiment, invitation for volunteers
Dear colleagues,
FYI. I have received responses from three members volunteering to conduct
MMF related experiments.
Oscar Agazzi (Broadcom)
Tom Lenosky (Finisar)
Jeff Saunders (Lucent)
In addition, two members have volunteered to help with the signal
processing (data analysis) part of this experiment:
Abhijit Phanse (National)
Kishore Kota (Cicada)
On my request, Mike Hackert is working towards obtaining samples of
DMD-challenged fiber for distribution to the first group of volunteers
listed above.
I hope you have read the Agazzi-Lenosky document. Using it as an agreed
upon procedure, the volunteers are about to get very busy in December.
After January 10, we may have time to argue the best method of processing
the collected data - but it will be too late to propose a different
theoretical basis or the method of collecting data.
Regards,
Vipul
vipul.bhatt@xxxxxxxxxxx
(408)542-4113
=======================
-----Original Message-----
From: owner-stds-802-3-hssg-equal@xxxxxxxx
[mailto:owner-stds-802-3-hssg-equal@xxxxxxxx]On Behalf Of Vipul Bhatt
Sent: Friday, November 24, 2000 9:36 PM
To: Equalization Ad-Hoc Reflector
Subject: proposed experiment, invitation for volunteers
Dear colleagues,
In considering equalization for multimode fiber links, a key concern has
been the time variance of the channel. Here "channel" should be
understood to be a composite effect of lasers, optical launch
arrangement, fiber, connectors, splices and the environment. Current
state of the art suggests that if the time variance of this channel is
slower than 1 MHz, it can be adaptively equalized. The portion faster
than 1 MHz will have to be treated as noise. What proportion of channel
variation falls in the "faster than 1 MHz" category? This was the
question asked by Exercise 2 posted on our web page earlier.
Oscar Agazzi and Tom Lenosky have diligently worked over the last few
days to write a response to Exercise 2. I thank them both. Their
response is a proposal to conduct an experiment. The document is posted
on our web page:
http://www.ieee802.org/3/ae/public/adhoc/equal/
My thanks also to Abhijit Phanse, Kishore Kota and Giorgio Giaretta for
useful comments. I expect the authors to revise this document once more,
after allowing time for more comments on this reflector.
May I recommend that we proceed as follows:
- Let's examine this document, improve on it, then adopt it as a test
procedure.
- We should have at least two volunteers to conduct this experiment. If
you wish to volunteer, please contact me before December 1, 2000.
- Meanwhile, I will work out with Mike Hackert the logistics of
obtaining the set of DMD-challenged fiber reels to run this experiment
on.
- If you volunteer, you will be expected to present the results of the
experiment on or before the P802.3ae March 2001 Plenary.
Regards,
Vipul
vipul.bhatt@xxxxxxxxxxx
(408)542-4113