Re: [8023-10GEPON] ODP: [8023-10GEPON] [POWER_BUDGET] ad hoc group meeting
Hi Maurice,
Nice saying :-) I agree with You that Ethernet technology
has a very strong neck and pushes the technical development to the limits - 10GE
was also supposed to storm the industry and reach the 10x 3x ratios rapidly
though based on what the HSSG presentations show - we are still quite far
away from 10x 3x ratio - people say 10GE equipment is more 10 x 5x for now and
perhaps with the new SFP+ modules the cost will finally go down to 3x when
compared with 1G equipment.
I am curious what You think about it ? Do we have a sweet
spot in here and can we sit on the 10GE wave and take advantage of their future
SFP+ modules ? If so I believe we can argue that there will be a drive to lower
the equipment cost and spur the development. Combined 10GE and 10G EPON will
definetely push the barriers even further ..
Best wishes
Hi Marek: We have a saying in
the US: "Nothing is sure but death and taxes".
That said, microelectronics has a history of continued
improvement.
I have taken advantage
of this in the past. In a real life example in 1989, I proposed
that
every test be datalogged at my
previous employer, and that the data be stored on a
network drive, to be made avaiable to anyone who had good
reason to see it.
The IT department
howled that no disk(s) existed that was(were) big enough to store this data,
and if there were, all the data we
collected would soon outgrow any possible drive(s)
that existed, even if they could afford to buy
them.
Fast forward to 2007.
Every datalog is still there: Even from 1989,
and they are still logging more data, and paying
less to store it than ever, on fewer drives.
The choice of the RX sensitivity and TX power numbers is
only going to affect the
implementation
schedule, in that if the choices are too aggressive more expensive
technology will be needed for a longer
time period.
For example: If
we set the RX sensitivity for a 10GBASE-PX20 ONU to be -25dbm,
and this is not achievable with a PIN
receiver until 2014 rather than 2010, will the
need to use an APD-based receiver for four more years adversely affect
the
implementation of the standard?
I dont' think so.
Ethernet's
appeal has a history of concentrating massive energy into driving
the cost down on the technology, and making it
widely available. When
a standard
truly fits the five criteria, tremendous market forces come to bear
in the implementation to make it both simple
and low-cost.
Best Regards
Maurice
Reintjes
MindspeedTM
Hillsboro, Oregon,USA
Office Phone
(503)-914-5370
Mobile (503)-701-0797
| "Hajduczenia, Marek"
<marek.hajduczenia@siemens.com>
01/30/2007 04:26 PM
|
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| <maurice.reintjes@MINDSPEED.COM>,
<STDS-802-3-10GEPON@listserv.ieee.org>
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Subject
| ODP: [8023-10GEPON] [POWER_BUDGET]
ad hoc group meeting |
|
Maurice,
what You're suggesting is thus that we ought to go the
same way i.e. set the targets aggresively and hope for teh best that the
manufacturers can come up with the compliant equipment ? 10G is not 1G and we
heard some opinions about the component progress and development, which may
result in significant improvement in the next 2-3 years but still, nobody can
say that for sure right ?
Best
wishes
Marek
________________________________
Od: Maurice
Reintjes [mailto:maurice.reintjes@MINDSPEED.COM]
Wysłano: Wt 1/30/2007
10:29
Do: STDS-802-3-10GEPON@listserv.ieee.org
Temat: Re: [8023-10GEPON]
[POWER_BUDGET] ad hoc group meeting
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)