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Re: [802.3_100GNGOPTX] SMF Ad Hoc

Hello Arash

 

Do you have results using the different calculation methods for 10GBASE-LR as defined in clause 52?

 

Regards,

John

 

From: Arash Farhood [mailto:arash_farhood@xxxxxxxxxxx]
Sent: Wednesday, January 23, 2013 9:13 AM
To: STDS-802-3-100GNGOPTX@xxxxxxxxxxxxxxxxx
Subject: Re: [802.3_100GNGOPTX] SMF Ad Hoc

 

Hi,
  I am resending this email in response to John Petrilla presentation.
Regards,
Arash
 

From: arash_farhood@xxxxxxxxxxx
To: stds-802-3-100gngoptx@xxxxxxxxxxxxxxxxx
Subject: RE: [802.3_100GNGOPTX] SMF Ad Hoc
Date: Tue, 4 Dec 2012 20:17:57 +0000

Folks,
I did some quick calculations to check the 1dB MPI penalty John showed us today. We need to pay more attention to this

1- Assume discount factor of 0.6, ROSA/TOSA_RL=-12dB and no connector, ER=3.5dB
The upper bound MPI penalty according to bhatt_01_0512 is 1.63dB. The MPI Penalty according to San Antonio statistical method is 1.31dB.
John slide shows around .9dB. The difference is most likely coming from the fact that the John's calculation is taking into account IL and I do not. I am not doing this since I am not really sure how to do this correctly. I am not convinced the method that is used in 10GEPBaud3_1_16a.xl is actually truly worst case.

2- I added 4 connectors to the the above with RL_connector=-35dB
bhatt_01_0512 MPI=2.49dB and SA_ Stats_MPI=1.97dB
The point is, we should not ignore the connectors even if the RL_Connector=-35dB

3- Removed the discount factor from the above
bhatt_01_0512 MPI=5.66dB and SA_ Stats_MPI=4.06dB
So the discount factor is a substantial discount!

Regards,
Arash Farhood
Director System Eng
Cortina Systems
 

Date: Tue, 4 Dec 2012 13:32:21 -0500
From: panslow@xxxxxxxxx
Subject: [802.3_100GNGOPTX] SMF Ad Hoc
To: STDS-802-3-100GNGOPTX@xxxxxxxxxxxxxxxxx

Hi,

 

The draft minutes and presentation from today?s call are on the SMF Ad Hoc web page.

 

As discussed on today?s SMF Ad Hoc call, the next call of the  SMF Ad Hoc will be at 8:00 am Pacific on Tuesday 18 December (1.5 hour duration if sufficient presentations otherwise shorter).

Please send requests for presentations on any of the SMF proposals to me.

 

There is a further SMF Ad Hoc opportunity on 8 Jan.

 

Peter Anslow from Ciena has invited you to join a meeting on the Web, using WebEx. Please join the meeting 5-10 minutes early so we may begin on time.

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Topic: "SMF Ad Hoc"

Date & Time: Tuesday, 18 December 2012 at 16:00, GMT Time (London, GMT)

To join web meeting click here: https://ciena.webex.com/ciena/j.php?ED=144395922&UID=0&PW=NOWY0NjIyMGMx&RT=MTgjMjE%3D

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Teleconference: Provide your phone number when you join the meeting to receive a call back. Alternatively, you can call:
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Conference Code: 207 012 5535


Meeting number: 689 628 657

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Additional Notes:

- To add this meeting to your calendar program click the following link, or copy the link and paste it into your Web browser: https://ciena.webex.com/ciena/j.php?ED=144395922&UID=0&ICS=MI&LD=1&RD=18&ST=1&SHA2=FcuM08oSZdNi1KYtkco9ZWcJ-9MGib1p9pKfwu7pQwU=&RT=MTgjMjE%3D

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Regards,

Pete Anslow | Senior Standards Advisor
43-51 Worship Street | London, EC2A 2DX, UK
Direct +44 2070 125535 |