Issue with Bidirectional TWDM-PON Simulation – No Upstream Results

[Tamim]

Hello,
I am working on simulating a bidirectional TWDM-PON system in OptiSystem.
The simulation works correctly for the downstream direction, but no results appear for the upstream direction (e.g., no BER or eye diagram).

Details:

· I used key components such as:
· Optical Line Terminal (OLT)
· Optical Network Units (ONUs)
· Bidirectional Fiber
· All settings match the research paper I am following.
· No errors appear during simulation, but the BER analyzer shows no results for upstream.

Has anyone encountered this issue before?
I would appreciate help in identifying the potential cause (e.g., interface settings, signal synchronization, or component configuration).

Thank you!

[Saurabh Bedi]

Hello Tamim,

Thanks for sharing your query and showing interest in using OptiSystem.

If you can share the simulation file and the research paper (you are referring to) in a zipped format, then we can have a quick look at it. If the solution is trivial then we will let you know. Else, if it requires deep investigation then please note that this service is only provided to the licensed users. Our records show that you are not a licensed user. If you want to have a continuous customer support and un-interrupted software updates, then I urge you to lease/buy the license. We offer very competitive prices for the academic licenses.

Please share the simulation file and the research paper (in zipped format) at support@optiwave.com.

Warm Regards,
Saurabh Bedi.

[Tamim]

ok,Thank you so much

[Author]

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