- This topic has 7 replies, 3 voices, and was last updated 11 years, 2 months ago by 
Damian Marek.
 
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August 27, 2014 at 10:00 am #13458
Dr. Naresh Kumar
ParticipantHello
I have used non coherent transmitter and Coherent Receiver in opti-System but it could not work right now. Anybody suggest which module we use in non coherent Transmitter, Our Coherent receiver work properly.
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August 27, 2014 at 10:11 am #13460
Damian Marek
ParticipantHi,
Could you attach a project file for your design? Are you using OptiSystem 12 or 13? Can you give a little more detail about how the transceiver/receiver is not working?
Thanks
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August 27, 2014 at 10:19 am #13463
Dr. Naresh Kumar
ParticipantI use optisystem 11. Here i am sending the Design file.
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August 27, 2014 at 10:23 am #13465
Dr. Naresh Kumar
ParticipantHello Damian Marek,
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August 27, 2014 at 10:51 am #13466
Dr. Naresh Kumar
ParticipantPlease Consider it
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August 28, 2014 at 5:25 am #13481
Dr. Naresh Kumar
ParticipantHello Damian Marek, I am waiting your reply
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August 28, 2014 at 12:26 pm #13487
Damian Marek
ParticipantHi Naresh,
I tried to find an error with your system but I think it may be simpler to do what Abdallah suggested. Open up or re-install the OptiSystem sample files and start with our Coherent Receiver design.
Regards
 
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August 28, 2014 at 9:39 am #13485
Abdallah Ismail
ParticipantDear,
You can download many coherent systems from optiwave website for example 100Gbps PM-QPSK
I’ve seen the design you attached,I didn’t inspect it but from the constellation image,i think that there is phase error between the Tx and The Rx.
I used power splitter after the CW laser and used the same laser for both the Tx and Rx but i found only two constellation points but received correctly but without Group velocity dispersion.Also the RF spectrum analyzer results seems not good.
I suggest that you follow the Optiwave examples attached in the software and start with it,You can find the Optisystem xx samples with the optisystem run in the program files.
I hope Damian can help you more.
Best Regards
Abdallah 
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