- This topic has 4 replies, 2 voices, and was last updated 11 years ago by
Damian Marek.
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April 9, 2014 at 11:49 am #10202
Michal Tkacik
ParticipantHello,
I simulate EPON with Traveling Wave SOA, situated in upstream direction. When signal cross the amplifier, the power is amplified but the impulses are too narrow. It follows that, if I want to calculate the project, there is always Warning Message: Warning while calculating, component Photodetector APD. Could you help me with this problem? My knowledges of OptiSystem aren’t excellent. Thank You, Michal Tkáčik -
April 9, 2014 at 12:00 pm #10204
Damian Marek
ParticipantCould you please re-upload the file and compress it as a .zip? It will help us out with answering your question. Thanks!
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April 9, 2014 at 12:11 pm #10205
Michal Tkacik
ParticipantI’m sorry. Here it is.
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April 10, 2014 at 1:02 pm #10210
Michal Tkacik
ParticipantCould you help me with it? Please. I don’t find out a solution of this. Thank you
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June 8, 2015 at 8:09 am #21451
metin çelik
ParticipantHello. An error occurs in the simulation of this sample. Can you please do the simulation and share the output here?
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April 10, 2014 at 1:32 pm #10211
Damian Marek
ParticipantThe issue here is with the use of the Delay component and the settings of the Travelling Wave SOA component. The settings for the SOA were not giving any output, so you will want to make sure that they are correct. Open up the component properties, by double clicking the SOA, and then click on the Help button for more detailed information.
The Delay component is generally used on one of the inputs of a bidirectional component to allow a backwards propagating signal to reach it on a subsequent iteration. For more information on how the Delay component and iterations parameter work take a look at this forum post:
Bidirectional Components [Optical System]
To fix your project file the Delay component between the Travelling Wave SOA and Photodetector APD was removed. The Travelling Wave SOA was removed and replaced with an Optical Amplifier. The number of iterations was also increased from 3 to 9, to allow the system to converge.
Hope this helps!
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