Re: [8023-10GEPON] power budget ad hoc teleconference
All,
I would not be so harsh in my judgment... both application types are
utilized. And, the fact is that the vast majority of EPON is indoors.
This was also the case in the previous standard, and if you look you will
find description of outdoor and indoor temperature ranges, in the annexes.
But, the big issue is the linkage that temperature ranges has with
transmitter behavior. At the 1G speeds, we had the big problem of FP laser
wavelength drift. This made the temperature range a 'make or break' issue
for FP lasers (to put it simply: Outdoor == DFB laser)
However, at the 10G speed, I think everybody is thinking DFB laser as a
default. So, the temperature range is now only applying pressure on the
output power. As such, it won't break a technology, only make it cost more.
In my opinion, this is a better place to be.
Frank E.
-----Original Message-----
From: Hajduczenia, Marek [mailto:marek.hajduczenia@SIEMENS.COM]
Sent: Tuesday, April 10, 2007 10:27 AM
To: STDS-802-3-10GEPON@listserv.ieee.org
Subject: Re: [8023-10GEPON] power budget ad hoc teleconference
Dear Shane,
Excellent point. Some of the xPON tryouts in Europe were running on outdoor
ONUs.
No luck Robert - we will not be able to simplify this topic :-)
Best wishes
Marek Hajduczenia (141238)
SIEMENS Networks S.A. - IC COM D1 R
Rua Irmãos Siemens, 1
Ed. 1, Piso 1
Alfragide
2720-093 Amadora
Portugal
* Marek.Hajduczenia@siemens.com
http://www.marekhajduczenia.info/index.php
(+351.21.416.7472 4+351.21.424.2082
-----Original Message-----
From: Eleniak, Shane [mailto:shane.eleniak@ALLOPTIC.COM]
Sent: terça-feira, 10 de Abril de 2007 15:01
To: STDS-802-3-10GEPON@listserv.ieee.org
Subject: Re: [8023-10GEPON] power budget ad hoc teleconference
Robert,
The standard temperature requirements are -40 to +65 C for Outdoor ONTs. You
cannot assume Indoor only ONUs as several countries and service providers
deploy outdoors for regulatory or operational reasons.
Regards,
Shane
-----Original Message-----
From: Lingle, Jr, Robert (Robert) [mailto:rlingle@OFSOPTICS.COM]
Sent: Monday, April 09, 2007 9:18 PM
To: STDS-802-3-10GEPON@listserv.ieee.org
Subject: Re: [8023-10GEPON] power budget ad hoc teleconference
When I consider the question of developing higher power DMLs at 1300nm, one
question that comes to mind is what are the temperature requirements for the
ONU? Can we assume indoor ONU? If not, what temperature extremes are
appropriate?
-----Original Message-----
From: Lingle, Jr, Robert (Robert) [mailto:rlingle@OFSOPTICS.COM]
Sent: Tuesday, April 10, 2007 12:09 AM
To: STDS-802-3-10GEPON@listserv.ieee.org
Subject: Re: [8023-10GEPON] power budget ad hoc teleconference
All,
The next call(s) will occur on Tuesday April 10 at 7PM EST and Wednesday
April 11 at 9AM EST.
(Because of the US time change in March, I believe that 7PM EST Tuesday is
now 8AM Japan time on Wednesday.)
Toll-free in US 866-263-8899
Outside US 816-249-6061
Conf. Code 7707985015
The following Orlando presentations, among others, may be relevant to the
discussions:
3av_0703_effenberger_1
3av_0703_takizawa_1
3av_0703_jiang_1
3av_0703_stefanov_2
In the call, I would like to address the following items. Please address
them on the Reflector prior to the call.
1. Much attention has been focused on the class B++ CH IL case. The only
proposed power budgets for PX10 and PX20 are those in
3av_0703_effenberger_1, slides 6 and 7. Are Frank's numbers for PX10 and
PX20 met with components available today? Or would these also require
development as in the case of B++? Does anyone recommend any changes to
these? If not, should we plan to adopt them at the May meeting?
2. In analyzing the power budgets from effenberger and takizawa for class
B++, it seems clear (at least to me) that the following components must be
developed to meet the power budgets:
-- US 1300nm requires the development of a NEW DML, perhaps cooled, that can
output 3-4 dBm minimum at 1300nm, compared to a more typical 0 to 1 dBm at
present.
-- DS w/ APD requires a NEW EML with +3 dBm minimum output power, compared
to a -1 to 0 dBm typical minimum output power at present.
-- DS w/ PIN can be done with existing EML+EDFA; it MIGHT be done with
existing SOA with Psat(1dB)=10dBm, but might require development of an SOA
with higher Psat(1dB)=12 dBm.
Robert
-----Original Message-----
From: Lingle, Jr, Robert (Robert) [mailto:rlingle@OFSOPTICS.COM]
Sent: Tuesday, April 03, 2007 10:07 AM
To: STDS-802-3-10GEPON@listserv.ieee.org
Subject: [8023-10GEPON] power budget ad hoc teleconference
All,
The next Power Budget Ad Hoc teleconference will occur on Tuesday April 10
at 7PM EST and Wednesday April 1 tentatively at 9AM EST. I may have to
travel Wednesday and ask your flexibility if I need to push this time to
8:30AM or 9:30AM to accomodate.
The topics will be a review of power budgets presented at the March Plenary
by Frank Effenberger and Wenbin Jiang, as well as implications of the
presentation by Stefanov on SOA output power issues.
More details will follow.
Robert
Robert Lingle, Jr.
Fiber Design and Transmission Simulation
OFS Corporate R&D, Atlanta
404-886-3581 (cell)
770-798-5015 (office)