Re: [10GMMF] Next task 2 meet - paper on Modal Noise on Aerial fibres - plus an experiment proposal
Jonathan,
I don't think you can put the paper on the web site due to copy right issues.
I think it would be better for people to get copies for themselves.
Regards,
David
-----Original Message-----
From: owner-stds-802-3-10gmmf@IEEE.ORG
[mailto:owner-stds-802-3-10gmmf@IEEE.ORG]On Behalf Of Jonathan King
Sent: 01 October 2004 01:52
To: STDS-802-3-10GMMF@listserv.ieee.org
Subject: [10GMMF] Next task 2 meet - paper on Modal Noise on Aerial
fibres - plus an experiment proposal
Dear all
good to see many of you in Ottawa at the interim meeting
Since many are still traveling home, I propose that the next task 2
(time varying meeting) should take place on
wednesday 13th Oct 9.30am - is that soon enough? please let me know your
preferences.
(If you feel an earlier meet up is required then we could meet on
wednesday 6th Oct 9.30am - let me know)
David Cunningham passed on a paper to me at the September interim
showing some dynamic measurements on modal noise for aerial fibres,
which is relevant to task 2 activities. I'll asked Piers to upload it
to the ieee site for reference; alternatively the reference is
'Modal-Noise Characteristics in Aerial Optical Cables Subjected to
Vibration', Hiromichi Shinohara, JLT, Vol LT-1,No-4, Dec 1983,
pp535-541.
Anyone want to volunteer to dig into it and summarize ?
I have a proposal for making measurements of impulse response change due
to mechanical movement in a quasi-static manner on some real fibres in
the lab:
The process would be:
set up an impulse response measurement test along the lines of the
'standard link', with a 3ply figure of 8 loop before the main fibre;
move one side of the coil (as in TIA/EIA-455-203 fibre shaker) stepping
through a reasonable amplitude of motion, and record the impulse
response at each step. It would give a picture of measured IPR
evolution vs perturbation; I also propose that the power change between
temporal modes vs fibre movement for a few test fibres is generalized to
help build a model of IPR change vs movement, which in turn can be used
to build a model of degree of IPR vs frequency (using the GR-63-CORE
vibration mask to relate frequency and amplitude of movement.
Comments and advice invited
best wishes
Jonathan
tel: 1 408 524 5110
e-mail: jking@bigbearnetworks.com
fax: 1 408 739 0568
Jonathan King
Director, Optical Systems
BigBear Networks
345 Potrero Avenue
Sunnyvale, CA 94085
-----Original Message-----
From: Jonathan King
Sent: Thursday, September 23, 2004 4:30 PM
To: STDS-802-3-10GMMF@listserv.ieee.org
Subject: [10GMMF] Participant names and commenst for Task 2 (time
variation) overview slides for September Interim
Dear all
last call for comments and amendments to the task 2 slide set for Ottawa
interim......its at:
http://ieee802.org/3/aq/public/upload/index.html
file name is
Task 2 update: Time variation and modal noise study
(22 Sept 04 rev 2, uploaded 23 Sept 04) 175K
If you'd like your name to be added or deleted please let me know ASAP
the current list of participants (ie those named themselves at >2 calls
!)
Robert Coenen, David Cunningham , John Dalessasse, Piers
Dawe, Jens Fiedler, Ali Ghiasi, Pete Hallemeier, Jesper
Hanberg, John Jaeger, Jonathan King, Paul Kolesar, Brent Lock,
Tremant Maio, Petar Pepeljugoski, Petre Popescu, Andre Van Schyndel,
Gary Schaulov, Yu Sun , Norm Swanson, Lars Thon
hope to see you in Ottawa
best wishes
Jonathan
tel: 1 408 524 5110
e-mail: jking@bigbearnetworks.com
fax: 1 408 739 0568
Jonathan King
Director, Optical Systems
BigBear Networks
345 Potrero Avenue
Sunnyvale, CA 94085