Re: [8023-10GEPON] Ad hoc on 10GEPON channel model
Dear Otaka-san,
The definitions they were referring to can be found at the beginning of the 802.3-2005 standard, Section 1.4 "Definitions" and 1.5 "Abbrevatiations". Section 1.4 contains in total 357 definitions and I think some of the issues can be resolved based on the current 802.3 specs.
As for the request "Anyway, what I'd like to require for the 10GE-PON is to be consistent with our exsisting ODNs.". The way the link budget is defined at the moment for 1G systems, You have a value which is defined as follows (1.4.273): The minimum optical power available to overcome the sum of attenuation plus power penalties of the optical path between the transmitter and receiver calculated as the difference between the transmitter launch power (min) and the receive power (min). That does include therefore the maximum channel insertion loss, which as You pointed out is virtually data rate independent, and additional power penalties of the optical path between the transmitter and receiver, which are required to operate the system at the pre-defined BER level. Could You therefore clarify what You mean by specfying two numbers ? What is the advantage of defining the channel insertion loss (min and max values) and penatlies separately ?
Best wishes
Marek Hajduczenia (141238)
SIEMENS Networks S.A. - IC COM D1 R
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2720-093 Amadora
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* Marek.Hajduczenia@siemens.com
http://marekhaj.easyisp.pl/index.php
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-----Original Message-----
From: Akihiro Otaka [mailto:ootaka@ANSL.NTT.CO.JP]
Sent: quarta-feira, 22 de Novembro de 2006 5:38
To: STDS-802-3-10GEPON@listserv.ieee.org
Subject: Re: [8023-10GEPON] Ad hoc on 10GEPON channel model
Dear, Frnk E, Piers and all,
This is Akihiro OTAKA from NTT.
As Frank mentioned, we have to understand the definitions.
And I think I don't understand these.
Could you tell me where can I find the IEEE-definitions?
Anyway, what I'd like to require for the 10GE-PON is
to be consistent with our exsisting ODNs.
So I think it is better to understand the "budget" into
at least two parts.
- max channel insertion loss; which is basicaly independent
from the transmission systems.
- penalty; which is related to the characteristics of the
transmitter and reciever of 10GE-PON.
Regards,
A.OTAKA
At 07:46 06/11/22, Frank Effenberger wrote:
>147a263.gif
>
>
>Dear Piers,
>
>I think that there is plenty of common ground to work on here, and I知
>sure that this time, we will work out a common framework of terms that
>will satisfy both the IEEE and ITU formalisms. At least, that is my hope.
>
>As for the last sentence you mentioned, the idea is not that the optical
>penalty would be measured・Indeed, this would be impossible. The idea is
>that the operator should design his fiber route and figure out what his
>penalties should be. I think this approach is especially important for
>the PON application, where we may have various other systems sharing the
>same fiber. In such a system, the path penalty is really beyond the
>control of the equipment manufacturer.
>
>Regards,
>
>Frank E
>
>