on the last call
we discussed the possible time delay within modes of a mode group in
rotational symetric fibers.
Enclosed you will
find an example which demonstrates that there exists various speeds
within a mode group for fiber profiles which are not
The file shows the
result of a calculation of a rotational symmetric fiber with 2 exponents of
a1=1,97 and a2=2,05 with the alpha change at R=17Ám.
You can observe
that there is no delay within a mode group for the low order modes which "see"
the perfect profile, but there is calculated a large delay within a group for
the mode groups 8 to 12 which travel in the area of the alpha
If the power
distribution within a mode group changes due to the change of the launch
condition it is possible to get a change in the pulse response of the fiber
even in rotational symmetric fibers for this case.
Infineon Technologies Fiber Optics
D-13629 Berlin / Germany
[mailto:owner-stds-802-3-10gmmf@IEEE.ORG] On Behalf Of Yu
Sent: Freitag, 29. Oktober 2004 22:40
Subject: [10GMMF] the minutes of
task 4 call
Please find the minutes of task
4 group as the attached file. Any comments and suggestions are highly
appreciated. The next task 4 meeting is scheduled as 11:00 am EST (please
note the ending of day time saving), Nov 1st.
The dial in information is