David,
What about upstream launch power? I am
not sure, but I’d guess the safety rules would be different for CO and for
a household.
Are there any volunteers to make a short
overview presentation on the topic?
Glen
From: David Piehler
[mailto:dpiehler@ALPHION.COM]
Sent: Wednesday, November 01, 2006
6:55 AM
To:
STDS-802-3-10GEPON@listserv.ieee.org
Subject: Re: [8023-10GEPON]
10GEPON ad hoc on higher split ratio - Conference Call Minutes
I don’t know the exact safety issues
involved, but I do know that carriers deploying the video overlay do launch up
to +20 dBm at 1550 nm into the OSP fiber. Also in the CATV world, this
type of launch power is not uncommon.
David Piehler
Alphion
mobile: +1 732 692 4581
From: Glen Kramer
[mailto:
Sent: Tuesday, October 31, 2006
11:49 AM
To:
STDS-802-3-10GEPON@listserv.ieee.org
Subject: Re: [8023-10GEPON]
10GEPON ad hoc on higher split ratio - Conference Call Minutes
Mike,
This is a great point. Could you provide
some more info on class 1 safety? In general, what regulations apply to
CPE side and to CO side? It would be great to have a presentation in
November covering this topic. It definitely should be part of the set of
constraints that the high-split ad hoc considers.
Glen
From:
Sent: Tuesday, October 31, 2006
11:35 AM
To:
STDS-802-3-10GEPON@listserv.ieee.org
Subject: Re: [8023-10GEPON]
10GEPON ad hoc on higher split ratio - Conference Call Minutes
Dear
all,
One
question related to the higher split ratio that I haven't seen discussed is
related to laser eye safety. Is this a problem for
EPON? For other ethernet standards we've normally required class 1
eye safety. I think powers significantly higher than
this are being considered here.
Regards,
Director Transceiver
Engineering
Picolight Inc
CO 80027
Tel 303 530 3189 x7533.
mike.dudek@picolight.com
From:
Sent: Tuesday, October 31, 2006 1:06 AM
To: STDS-802-3-10GEPON@listserv.ieee.org
Subject: [8023-10GEPON] 10GEPON ad hoc on higher split ratio - Conference Call
Minutes
Dear
all,
below
please find the conference call minutes, taken down by Glen (thank You for the
job well done)
please
let me know if You find any irregularities in the minutes or if You have any
comments on those.
*******************************************************************************
Attendees:
Haim Ben-Amram
Russell Davey
Glen Kramer
Marek Hajduczenia
Frank Chang
Silvia Pato
David Piehler
Harold Kamisugi
Bin Yeong Yoon
Dong Soo Lee
Wael Diab
Task 1: estimation of 1x64 and
1x128 port splitter power loss values
---------------------------------------------------------------------
Discussed Marek's
presentation. Few questions about derivation of splitter loss. No objections.
Task 1 is considered completed.
Task 2: non-linear effects in
fiber channel
-------------------------------------------
Silvia gave brief overview of
the paper on non-liner effects in 10GEPON. SBS seems like major impairment.
Mentioned dithering technique for laser sources.
Questions that need more research:
1) Can video-overlay even be
supported on 1x128 PON? What power budget will be required?
2) Can we use high-power
source for data wavelength and use video-overlay? Effects of Raman crosstalk
due to high-power source.
AR: Silvia will finish
sub-task 2.2 "estimate the maximum launch power into fiber which can be
achieved without introducing non-linear effects" by November 6th.
Task 3: TX/RX technology
----------------------
Bin Yeong Yoon and dong Soo
Lee are in the process of compiling a survey of receivers, transmitters, and
amplifiers available on the market today.
AR: Bin Yeong Yoon is to
finish the first draft later this week. Then narrow down the viable
configurations based on input from task 2.
Task 4: power margins in the
EPON systems
-----------------------------------------
It seemed to be difficult to
get this data from carriers. It was decided that for now we will
reverse-calculate this data from insertion loss taken in 802.3ah. We later may
update it with more accurate numbers based on carriers' responses to a
wavelength/power survey.
AR: Marek is to calculate
allocation for penalties and outside plant aging and repair margins later this
week.
An additional conference call
may be scheduled to discuss final drafts of the presentations.
*******************************************************************************
Best
wishes
Marek
Hajduczenia (141238)
(PhD Student - COM RD1)
SIEMENS
Networks S.A. - IC
Rua Irmãos Siemens, 1
Ed. 1, Piso 1
Alfragide
2720-093 Amadora
Portugal
* Marek.Hajduczenia@siemens.com
http://marekhaj.easyisp.pl/index.php
(+351.21.416.7472 4+351.21.424.2082
