April 16, 2015 at 10:24 am #19820
how to check the dispersion value in optisystem 13
in its earlier versions, the end of WDM multiplexer or the end of optical fiber gave the dispersion values but not in optisystem 13
April 17, 2015 at 12:40 am #19850Abhishek ShramaParticipant
Are you looking for the value of dispersion which is set in SMF-28 by default or the broaden pulse after several km of SMF??
April 17, 2015 at 9:44 am #19866
no abhishek not the default 1
the one which is accumulated after travelling a certain distance
April 17, 2015 at 10:58 am #19869
yes Anamika,i also want to know this thing.Can we simply calculate dispersion like
and length of fiber=10
so my dispersion comes out to be=10*17=170 ps ??
is this work like this????
April 17, 2015 at 12:27 pm #19870
earlier i had optisystem 9 in which it gave the dispersion values directly at the end of optical fiber and demultiplexer also
i dont know about optisystem 13
April 17, 2015 at 10:50 pm #19878Dr Rk SethiParticipant
Can you tell, how did you get the value of dispersion at the end of the optical fiber which is accumulated after travelling a certain distance in Optisystem 9.
April 17, 2015 at 11:03 pm #19881RavilParticipant
I am not sure as well about your way of getting dispersion at the end of optical fiber without any calculations. What was your procedure and what kind of meter / analyzer did you use? Can you share it with us, please?
April 18, 2015 at 12:17 am #19886
i did’t used any special component for calculating the dispersion
after running ur design
the point from where the optical fiber is connected to other components, u just have to place ur cursor at that point and it gave the dispersion values. even noise and power values it used to give, but in OptiSystem 9
April 18, 2015 at 11:42 am #19896
April 18, 2015 at 11:42 am #19897
Anamika i found a way to calculate dispersion.You can place OTDV on the starting and ending point of your optical fiber.Deselect the automatic range and do this operation
3)End value=10,20 (how many bits you want to see
4) Right click,select marker
5)place on leading edge and trailing edge of pulse,you will get the time of one pulse
6)same you do after SMF and you will get value of dispersed pulse
Please correct me if i am wrong anywhere.+1
April 18, 2015 at 12:18 pm #19901
can u plz elaborate
from where i have to select BIT ???
April 18, 2015 at 11:36 pm #19904RavilParticipant
Thanks for your explanation! I see your point and approach. However, the main question which I have in this case is how will you distinguish the dispersion in optical fiber (caused by wavelength dependence of refractive index or material dispersion) from pulse broadening due to nonlinear effects in optical fiber? The only way I can think of is disabling / enabling nonlinearities when you performing your measurements…
April 19, 2015 at 2:26 am #19906
bt how can this be done now with optisystem 13
April 20, 2015 at 2:59 am #19933
April 20, 2015 at 8:50 am #19941
thnkyou abhishek and sam sung for making me understand.
April 20, 2015 at 10:17 am #19949
Welcome Anamika,I am also new to optisystem ans have lot of questions.I am working over it so that understand it better.Also thank you Abhishek to support my point .
April 20, 2015 at 1:13 pm #19961
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