- This topic has 7 replies, 5 voices, and was last updated 9 years, 12 months ago by
alistu.
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October 24, 2015 at 1:11 pm #27057
lavanya krishnan
ParticipantI design a 16 channel 10Gbps wdm system.in that design when I plot a curve between span-length and q-factor I got maximum q-factor 3.3
which far less than acceptable level. normally a system has a q-factor of 6-9 .can anyone help me to increase q factor? -
October 26, 2015 at 10:15 am #27088
Hoat LeParticipantI don’t open your file because i’m using optisystem 7.0 .But you can refer my file .
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November 7, 2015 at 11:11 pm #27518
san lymit
ParticipantDear,
Refer to your result, what is DCF? it is not optical fiber?
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November 8, 2015 at 2:46 am #27525
alistuParticipantHi Hoat,
I have also used DCF about two weeks ago in order to improve this system performance, but it did not have any remarkable change (it is good other people like you would also give it a try though). I have also reduced the lasers linewidth to smaller yet common values, it did not even make any significant change.
Regards
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October 27, 2015 at 11:19 am #27135
prakash jatParticipantload again
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November 8, 2015 at 2:51 am #27527
alistuParticipantHi San,
DCF or Dispersion Compensating Fiber is also a part of an optical fiber, but the function is to compensate for the dispersion. The dispersion is an accumulative parameter, so if the dispersion is 16 per kilometer, for example, and the fiber is 5km long, using a DCF of 1 km with a dispersion of -80 per kilometer would compensate the dispersion:
5×16 + (-80) = 0
Regards
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November 8, 2015 at 3:12 am #27528
san lymit
ParticipantDear alistu,
Where can I find DCF?
Regard,
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November 8, 2015 at 4:09 am #27530
alistuParticipantYou can easily change the settings of a SMF with regard to the main SMF fiber in your system (the one you want to compensate the dispersion of) the way I have told you above. Please, take a look at the file attached by Hoat. Click on the fibers and see the dispersion parameters on the “dispersion” tab for both fibers and compare the values to realize how to use a fiber as a DCF. In case you have more questions, you are welcome to ask.
Regards
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