[8023-10GEPON] ODP: [8023-10GEPON] 10GEPON ad hoc on high split systems - Task 1 - corrected link
Glen,
thank You for the suggestions. I added a slide and You can find an updated version of the presentation at:
http://www.ieee802.org/3/av/working_docs/Adhoc-task1.1.ppt
The included links to manufacturers' data sheets regarding PSC modules are meant as an example only rather than an exhaustive list. The quoted data sheets are open to public and even though I had access to some confidential material, I did not included it in the estimation and the final results. That would be a violation of the IEEE policy for open information access.
Regarding the methodology of the research. I should probably clarify a little bit the way data was collected and processed. Please have a look at the file: <http://www.ieee802.org/3/av/working_docs/Adhoc-task1.1.ppt> http://www.ieee802.org/3/av/working_docs/ <http://www.ieee802.org/3/av/working_docs/Splitter_loss1.1.xls> Splitter_loss1.1.xls
The data sheets were first collected from individual manufacturers and then divided into FBT and PLC devices. Since the manufacturing technologies are different, it made sense to differentiate the examination as well, since the characteristic insertion loss for both aforementioned technologies are slightly varied. The data from the data sheet was next collected in the tab entitled "Companies". Each entry has its PSC module description indicating whether the given device is dual window, PLC/FBT, and what quality is it. Please note that the insertion loss typically decreases along with the increase in the class of the device, but so does the cost. Next, the FBT and PLC splitters were examined in more detail in tab "Splitter comparison", where individual port counts had their average, min and max insertion loss estimated for the available devices. Next, the excess loss (difference between the measured insertion loss and theoretical insertion loss) was calculated for average, mi!
n and max insertion loss estimated for the available devices and they were plotted against the port count. The obtained curves were approximated with log plots and approximation coefficients were taken down. The said coefficients were then used to approximate the excess loss for 1x64 and 1x128 port devices, since such high port densities are not available commercially (apart from company manufacturing 1x64 PLC devices) and then total insertion loss, which is a total of theoretical loss and excess loss.
Having 1x64 and 1x128 port device insertion loss, we can estimate the total link loss budget for 10 and 20 km systems, with 1x64 and 1x128 port splitters in a single and multistage configurations. Obviously, a single stage configuration features only 1x64 port deivce, while dual stage configuration may have 1x8 + 1x8 or 1x16 + 1x8 etc. Several possible configurations are exminaed in the said Excel file in the tab named "Power budget". Two separate scenarios were examined in there, namely a connectorized splitter (a splitter is connected to the fibre cable using connectors) and a spliced splitter (a splitter is spliced with the fibre plant). The fibre loss of 0.5@dB/km includes cable loss, splice loss etc and is based on the values adopted in 802.3 - 2005, table 60.1. Probably we should again look at this value since we will be operating @10G, though I would not expect any dramatic changes.
If there are any questions regarding the methodology, any comments on the values and obtained link loss budgets, please let me know. I want to be able to improve this presentation but I need feedback from You on this.
Thank You for Your time
Marek
________________________________
Od: Glen Kramer [mailto:glen.kramer@TEKNOVUS.COM]
Wysłano: Śr 10/25/2006 5:31
Do: STDS-802-3-10GEPON@listserv.ieee.org
Temat: Re: [8023-10GEPON] 10GEPON ad hoc on high split systems - Task 1 - corrected link
Marek,
Thank you for posting this. I suggest you add one more slide, where you list
links to the manufacturer's data sheets. You already have those links in
your excel file.
Glen
> -----Original Message-----
> From: Hajduczenia, Marek [mailto:marek.hajduczenia@SIEMENS.COM]
> Sent: Tuesday, October 24, 2006 9:53 PM
> To: STDS-802-3-10GEPON@LISTSERV.IEEE.ORG
> Subject: [8023-10GEPON] 10GEPON ad hoc on high split systems - Task 1 -
> corrected link
> Importance: High
>
> Dear all,
> seems that the spaces in the link which I posted previously were converted
> into some non-sense ...
> the link displayed as: "http://www.ieee802.org/3/av/working_docs/Ad
> <http://www.ieee802.org/3/av/working_docs/Ad> hoc - task 1.ppt"
> should be read as: http://www.ieee802.org/3/av/working_docs/Adhoc-
> task1.ppt. This is a correct link. Sorry for the problem.
> Best wishes
> Marek
>