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Lew -
Your development assumes that the rms value due to RIN is
proportional to the optical signal power. In the case of TP3 testing, we plan on
adding a white noise generator before the E/O, such that its rms noise is ~ the
same at both levels.
In this case, the math can get much simpler and should revert to the simple
textbook formula PP(dB)=-5*log[1-(Q/Qn)^2], and Qn
=Q/sqrt(1-10^(PP(dB)/-5)).
For 0.9 dB, Qn=12.1. (Compare to your equation (8)).
Comments?
Tom
----- Original Message -----
Sent: Tuesday, October 26, 2004 8:45
AM
Subject: [10GMMF] TP3 calculation of OSNR
for compliance test
Sorry for the late e-mail, my first attempt got bounced as too
large a file size.
Please find attached a calculation I have done for
the optical S/N we need to have on the TP3 compliance signal. It also
has some calculations of the resulting EDC S/N for different receive powers
and receiver front end sensitivities.
Lew
-----Original
Message-----
From: Michael Lawton [mailto:mike_lawton@AGILENT.COM]
Sent:
Tuesday, October 26, 2004 2:22 AM
To: STDS-802-3-10GMMF@listserv.ieee.org
Subject:
[10GMMF] TP3 meeting Agenda + dial in Oct 26
Dear
TP3'ers,
Here is the agenda for today's meeting:-
Tuesday
October 26th at 9am SJ, 5pm UK, 6pm Germany
Dial in (650) 599-0374, Meeting
ID:
136169
1. List
Attendees
2. Review meeting
notes from last week
3. Agenda additions/changes?
4.
Static Channel
Methodology
- Noise loading - review calculations from
Lew
- Channel types and exact
characteristics
o review comments from Tom reference rise and fall
time
5.
Jitter
- Petre kindly agreed to evaluate jitter testing requirements and the need for
a high
frequency
sinusoidal
interferer
6. Link
Budget
- I think we have agreed that the testing is designed to emulate the
budget
- Do we need to do more work on the
budget?
- Is our thinking on metrics changing? (PIE-L, PIE-D, fixed length
equalisers)
- 300m question
7.
OMA Measurement
methodology
- Piers is exploring a histogram vs a slow pattern approach.
I'm not
expecting we work through all the items ... however I want to keep them on the
agenda so we understand our work list and where it makes sense we can shift
around the order.
Talk to you all later.
Best
Regards
MIke
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