Re: [8023-10GEPON] [POWER_BUDGET] ad hoc group 2nd meeting
Dear Marek,
I think I am confuing you a little.
I want 29dB CHIL for 1x32 @ 10km not for 1x32 @ 20km.
So, I said CHIL for 1x64 @ 10km was 32dB of CHIL for 1x32 system @ 10 km +
3 dB for increased split count.
However, some people think 29dB CHIL is useful for 1x32 @ 20km, and I do
not care about it.
I would like to say I cannot use 29dB CHIL for 1x64 @ 10km, but I do not
oppose it.
Sincerely yours,
Tsutomu TATSUTA
At 19:30 07/02/06, Hajduczenia, Marek wrote:
>Dear Tatsuta-san,
>I am by no means suggesting that we need to define the split ratio for the
>system (apart from the minimum split ratio as defined in 802.3ah). I was
>just curious about the CHIL for 1x64 system @ 10km using Your highly
>connectorized fibre. You say that 1x64 @ 10km requires 32 dB which is like
>29dB of CHIL for 1x32 system @ 20 km + 3 dB for increased split count. Did
>You account here for the decreased fibre span (10 km less should provide
>roughly 3-4 dB lower loss if I am not mistaken ... )
>Best wishes
>Marek Hajduczenia (141238)
>SIEMENS Networks S.A. - IC COM D1 R
>Rua Irm〓os 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
>
>
>-----Original Message-----
>From: TATSUTA [mailto:tatsuta@ANSL.NTT.CO.JP]
>Sent: ter〓a-feira, 6 de Fevereiro de 2007 3:16
>To: STDS-802-3-10GEPON@listserv.ieee.org
>Subject: Re: [8023-10GEPON] [POWER_BUDGET] ad hoc group 2nd meeting
>
>Dear Marek,
>
>At first, I have to explain 29dB CHIL.
>In case of our network, 1x32 and 10km reach needs 29dB CHIL.
>So, 1x64 and 10km needs 32dB CHIL.
>
>However, I think we can use 29dB CHIL for 1x32 split and 20km in the spread
>sheet, because it looks more reasonable for the other people.
>Also, somebody can use the 29dB CHIL system for 1x64 and 10km.
>
>My question is why we need to decide split ratio?
>I think the split ratio needs to be decided for calculating a channel
>insertion loss or a power budget.
>Once the power budget is decided, an operator can use the system for what
>they want.
>Somebody can use it for 1x64 and 10km, somebody can use it for 1x128 and
>5km, etc.
>
>Sincerely yours,
>Tsutomu TATSUTA
>
>
>
>At 20:33 07/02/05, Hajduczenia, Marek wrote:
> >Dear Tatsuta-san,
> >Would You be able to estimate what channel insertion loss would be observed
> >in this type of a system should 1x64 split PON be constructed with 10km
>reach ?
> >Best wishes
> >
> >Marek Hajduczenia (141238)
> >SIEMENS Networks S.A. - IC COM D1 R
> >Rua Irm縊s 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
> >
> >
> >-----Original Message-----
> >From: TATSUTA [mailto:tatsuta@ANSL.NTT.CO.JP]
> >Sent: segunda-feira, 5 de Fevereiro de 2007 3:22
> >To: STDS-802-3-10GEPON@listserv.ieee.org
> >Subject: Re: [8023-10GEPON] [POWER_BUDGET] ad hoc group 2nd meeting
> >
> >Dear Frank,
> >
> >This is Tsutomu TATSUTA from NTT.
> >
> > >1) Can someone elaborate the apps background of 29dB? is it simply for the
> > >loosy legacy fiber link? If not, I suggest we specify 29dB for high split
> > >ratios. We have 24dB for 20km with at least 1:16, then 29dB could be usable
> > >for 64 or higher. This is important for leveraging the 10G ONU cost.
> >
> >Unfortunately, we use more connectors in a real field than you image.
> >So, we need 29dB only if we use 32 split ratio.
> >
> >Sincerely yours,
> >Tsutomu TATSUTA
> >
> >
> >
> >At 07:59 07/02/03, Frank Chang wrote:
> > >Hi Robert;
> > >
> > >Very nice notes. One question again I'd like to stress:
> > >
> > >1) Can someone elaborate the apps background of 29dB? is it simply for the
> > >loosy legacy fiber link? If not, I suggest we specify 29dB for high split
> > >ratios. We have 24dB for 20km with at least 1:16, then 29dB could be usable
> > >for 64 or higher. This is important for leveraging the 10G ONU cost.
> > >
> > >2) The question of EFM FEC is good one. I know it's now rarely used by
> > >fields. Can someone explain how this feature is optional? So one doesnot
> > >have to pay its complex if donot need the gain.
> > >
> > >Regards
> > >-Frank
> > >
> > >-----Original Message-----
> > >From: Lingle, Jr, Robert (Robert) [mailto:rlingle@ofsoptics.com]
> > >Sent: Friday, February 02, 2007 1:37 PM
> > >To: STDS-802-3-10GEPON@listserv.ieee.org
> > >Subject: Re: [8023-10GEPON] [POWER_BUDGET] ad hoc group 2nd meeting
> > >
> > >Please find attached the notes for the first Power Budget Ad Hoc meeting.
> > >
> > >Please direct any corrections to me.
> > >Robert
> > >
> > >-----Original Message-----
> > >From: Lingle, Jr, Robert (Robert) [mailto:rlingle@OFSOPTICS.COM]
> > >Sent: Thursday, February 01, 2007 3:09 PM
> > >To: STDS-802-3-10GEPON@LISTSERV.IEEE.ORG
> > >Subject: [8023-10GEPON] [POWER_BUDGET] ad hoc group 2nd meeting
> > >
> > >All,
> > >
> > >I will send the notes from this week's meeting tomorrow 2/2.
> > >
> > >As discussed in the previous call, the next call(s) will occur on Tuesday
> > >Feb 6 at 7PM EST and Wednesday Feb 7 at 9AM EST.
> > >
> > >Notes from this week's call as well as agenda for next week will be sent
> > >Friday.
> > >
> > >Toll-free in US 866-263-8899
> > >Outside US 816-249-6061
> > >Conf. Code 7707985015
> > >
> > >Robert
> > >
> > >Robert Lingle, Jr.
> > >Fiber Design and Transmission Simulation
> > >OFS Corporate R&D, Atlanta
> > >404-886-3581 (cell)
> > >770-798-5015 (office)