Problem with Modulator’s setting
Dear All,
I am trying to replace the exiting LiNbO3 (dual drive) based modulator with my own designed Modulator, but I am unable to get the expected constellation diagram (attached here). What may the the issue. I have taken 56 Gbps coherent 16 QAM back to back with DSP example given is sample for simulation.
Thanking you.
Attachments:
Responses (4):
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Dear All,
I am trying to replace the exiting LiNbO3 (dual drive) based modulator with my own designed Modulator, but I am unable to get the expected constellation diagram (attached here). What may the the issue. I have taken 56 Gbps coherent 16 QAM back to back with DSP example given is sample for simulation.
Thanking you.Attachments:
-
Hello Subhash,
Could email me your project as a zip file to ahmad.atieh@optiwave.com to debug it? It is difficult to debug the issue.
From the constellation graph, the modulation is not 16QAM. I see only 8-spots, which may indicate 8QAM placed circular.Regards,
Ahmad -
Dear Sir,
Thank you for respond. I have sent both files, i.e. original one as well as modified one on your email. Please look into the problem and suggest to overcome the problem.
With regards,
(Subhash Arya) -
Hello Subhash,
Unfortunately, I didn’t receive the files. You need to send them as zip files.
Regards,
Ahmad -
Dear Sir,
I have sent now file as zip file. Hope this time you shall receive.
With regards,
(Subhash Arya)
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