Glen: The procedure you outline
below is close to how Clause 60 was developed.
What helped EFM in terms of Link budget
was choosing an aggressive target
(one which was just barely ahead of
the present state of the art for low-cost components)
for TX power and RX sensitivity, and
having the suppliers stretch to meet it.
By the time the standard was ratified
suppliers were ready.
Best Regards
Maurice Reintjes
MindspeedTM
Hillsboro, Oregon,USA
Office Phone (503)-914-5370
Mobile (503)-701-0797
Glen Kramer <glen.kramer@teknovus.com>
01/30/2007 01:42 PM
Please respond to
glen.kramer@teknovus.com
To
STDS-802-3-10GEPON@listserv.ieee.org
cc
Subject
Re: [8023-10GEPON] [POWER_BUDGET] ad
hoc group meeting
Robert,
This is a good plan for the call. To clarify item (b) below, as an
outcome
of this ad hoc I would like to see two tables listing receive and transmit
characteristics for each PMD. As an example, I attached corresponding tables
from clause 60 (1000BASE-PX20).
I am thinking of the following iterative process:
1) Pick Rx and Tx technologies that may get you the required budget
2) Select a specific set of parameters (as in the attached tables) that
satisfy the required budget and which the chosen technologies can achieve.
3) Verify the selected combination of parameters using the Link Model
spreadsheet.
4) If verification fails, return to step 1) or 2).
Not all the parameters in the attached tables are used in the spreadsheet,
so we probably don't need to sweat right now on those parameters that do
not
directly affect power budget (like laser on/off, settling time, or jitter
characteristics).
Those, who have been through the EFM PMD's pains, please comment on what
worked and what didn't in selecting the 1G EPON PMDs.
Thanks,
Glen
> -----Original Message-----
> From: Lingle, Jr, Robert (Robert) [mailto:rlingle@OFSOPTICS.COM]
> Sent: Monday, January 29, 2007 7:11 PM
> To: STDS-802-3-10GEPON@listserv.ieee.org
> Subject: Re: [8023-10GEPON] [POWER_BUDGET] ad hoc group meeting
>
> As a reminder, there will be two meetings with essentially the same
> agenda,
> one Tuesday evening at 7PM EST and the other at 9AM EST Wednesday
morning
> (see below).
>
> I am revising the agenda for the first meeting, based on feedback
on the
> reflector and some phone conversations. It seems there is a
need to
> better
> understand the meaning of the numbers in the power budget, prior to
> driving
> to solutions for those power budgets. So we will first:
> a. introduce ourselves on the call
> b. tell you what I think Glen wants us to accomplish, then see what
others
> think is important
> c. discuss the interpretation of the 29dB channel insertion loss in
> context
> of the EFM power budget and make sure we all agree on what it means.
> Several
> emails on the reflector on 1/28 and 1/29 addressed this subject.
> d. begin looking at specific past proposals for meeting the
29 dB budget,
> likely to carry over to next meeting.
>
> I will send out some slides prior to meeting.
>
> Robert
>
> -----Original Message-----
> From: Lingle, Jr, Robert (Robert) [mailto:rlingle@OFSOPTICS.COM]
> Sent: Friday, January 26, 2007 10:48 AM
> To: STDS-802-3-10GEPON@LISTSERV.IEEE.ORG
> Subject: [8023-10GEPON] FW: [8023-10GEPON] [POWER_BUDGET] ad hoc group
> meeting - CORRECTE D
>
>
> There was an error in my first email w/r/t to the time of the Wednesday
> 1/31
> call. It will be held at 9AM to enable European participation.
> **************************************************************************
> **
> ************
> All,
>
> I appreciate the expression of interest I received in the Power Budget
ad
> hoc from 10 individuals. I expect more than that to join the
calls.
>
> The first meeting will be held Tuesday, January 30 at 7PM EST, which
I
> believe is
> Wednesday January 31 at 9AM in Tokyo. This meeting would likely be
> attended by anyone in Japan, Korea, or the US West Coast.
>
> I will also hold a follow-up call on Wednesday January 31 at 9AM EST
> for anyone on the East Coast of the US or in Europe who wishes to
> participate. I believe that will be 2 or 3PM for Europe cities.
>
> Toll-free in US
866-263-8899
> Outside US
816-249-6061
> Conf. Code
7707985015
>
> I propose that the ad hoc will meet four times between now and March
> Plenary, with following goals:
>
> 1/30 & 31 - purpose is to review a summary of results and conclusions
from
> previously prepared materials, discuss what seem like most likely
> solutions
> for 29dB power budgets, and to generate questions that need answers
to
> turn
> preliminary conclusions into consensus conclusions based on cost and
> technical feasibility. I am preparing that presentation to review
in
> consultation with others. Ad hoc participants will be expected to
take
> action items from the first meeting to bring back answers to the questions
> raised.
>
> week of 2/12 - purpose is to bring back answers to questions raised
in
> previous meeting and debate their meaning, with goal of focusing down
on
> one
> PMD proposal one which to analyze further for the 29 dB power budget
case.
>
> week of 2/26 - purpose is to finish up any unanswered questions for
29dB
> power budget solution, and begin to discuss whether the 29 dB solution
can
> form the basis for reduced cost PMDs for lower power budget cases?
>
> week of 3/5 - review and revise a presentation for March plenary
>
> Robert
>
> Robert Lingle, Jr.
> Fiber Design and Transmission Research
> OFS Corporate R&D, Atlanta
> 404-886-3581 (cell)
> 770-798-5015 (office)