- This topic has 7 replies, 3 voices, and was last updated 10 years, 3 months ago by
Ashu verma.
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July 29, 2015 at 6:29 am #22857
maha slitiParticipantHello,
I have a problem when using white led source and fso link. I have attached my simulation file. -
July 29, 2015 at 9:16 am #22869
Damian Marek
ParticipantA couple small problems:
1) You need a 3R Regenerator to reproduce the clock signal for the eye diagram.
2) The White Light Source needs to be converted to a sampled signal to be modulated. Check the Convert Noise Bins parameter.
3) Finally a low pass filter helps to clean up the detected electrical signal.
See attached.
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July 29, 2015 at 8:18 pm #22883
maha slitiParticipantThank you Sir.
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July 29, 2015 at 8:28 pm #22884
maha slitiParticipantI cannot open the attached file. Can you please attach a scanned image?
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July 29, 2015 at 9:19 pm #22885
maha slitiParticipantI have obtained the eye digram by following your corrections. Thank you very much.
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August 29, 2015 at 10:25 pm #24195
maha slitiParticipantDear Sir, When I tried to use the wavelength 750nm in the white led and an optical fiber centered at the same wavelength, the signal is lost. I did not understand the problem.
I have attached my simulation file.-
August 31, 2015 at 10:25 am #24230
Damian Marek
ParticipantI am not sure what you mean by the signal is lost. Attached is the time domain output I receive, which is actually at a higher power than the output.
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August 31, 2015 at 11:50 pm #24255
Ashu vermaParticipantHello Damian i have also analyzed the signal at output too.but i need to know
Why maha used edfa with 20 dB gain fir just 0.25 km of fiber length.when i run simulation without amp. System works fine and also took less time .with and without edfa results i got same 10^-18.i lowered the power of led to 0db and deleted edfa ,system works fine.
Damian can we use EDFa along with LED? I have a doubt in this ..
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