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Jim, As an early supporter of 10GigEPON (starting at the CFI) I am
writing to the task force to express my support for your proposal. I believe that
the 1580-1600nm wavelength would be more appropriate for use in the North
American and in particular US MSO market. This market is composed of operators
have existing wavelengths in use of their plant. Some already have substantial
EPON deployments. As you have pointed out, 1577 (1574-1580nm) could be substantial
problem for MSOs. Having the second wavelength available for this market need
would help to avoid a conflict between 10GigEPON and broadcast video – to
which 10GigEPON would surely loose out. If the task force were to elect to keep
1590nm out of the plan, they would be spelling out certain disaster for
10GigEPON as we know specifically of the efforts to use 1590nm for current
proposals for a next generation GPON solution. The result of keeping 1590nm out
of 10GigEPON would be to force the MSO industry to GPON. I’ll just assume
that is not the goal of the 10GigEPON Task Force, but it nevertheless would be
the most likely outcome. In fact it is no surprise to find that the GPON vendors are the
ones most supportive of this proposed change. I’ve communicated with a number of major US MSOs about
this issue. The three I have directly received responses from all support
1590nm and wish to continue to see it as their first choice. Although these
organizations are not directly represented in the IEEE today, they have from
time to time participated in the past, and are certainly the largest EPON and
10GigEPON market in North America currently. For this reason, I urge the task
force members to reach out to the MSO community and solicit their opinions if
you do not already know where they stand. Victor Blake Independent Consultant From: Jim Farmer
[mailto:Jim.Farmer@xxxxxxxxxxxxx] We request
to make the attached presentation during the 10GEPON meeting in Dallas.
We remain concerned over the decision to drop the 1590 nm downstream band from
the plan, for reasons shown in the attached. Note that there are notes
that go with most of the slides. You can see them by going to View|Notes
Page Thanks,
Jim Farmer,
K4BSE |