NG-PON2

[Brian PamuktiParticipant]

Hi
I am trying to make a NGPON2 system with OCDMA , 40GB/s over 60 km .
Quality factor > 6
Please I need your help
Anyone who know how to fix my project could help me plz
Thank you.

[alistuParticipant]

Hi Bryan,

I suggest you start your implementation by using the OCDMA example in OptiSystem sample files (you are going to need to install the samples first if you haven’t already). You can make the necessary changes to the already established implementation and ask for more specific help here if needed.

Regards

[Brian PamuktiParticipant]

Thanks, for your response.

i’ve tried to figure out about OCDMA from several journals on IEEE and Tutorial of Optisystem.
But, some authors didn’t share about theirs OCDMA system and i havent understand relation between NG-PON2, TWDM and OCDMA.

can you give me some e-book, so i can learn better.

and, i’m sorry about my english. Not good in language.

Huge thanks 😀

[alistuParticipant]

You’re welcome Brian. If you are would like to know how the addressed OptiSystem sample (SAC OCDMA) works, please refer to the following forum page where it has been discussed in detail:

how to implement sac ocdma?

In case you have further questions about it, I would be glad to answer.

Regards

[Brian PamuktiParticipant]

Mr. Alistu.

can you give me some suggests about my project.
here’s 40 Gbps with FBG on single link fiber,

target of Q factor > 6

Thanks

Attachments:

1. Project1.osd

[alistuParticipant]

I matched the sequence length in layout parameters to the size of the bit sequence in your user defined bit sequence generator and then, used the second optical fiber that you have used as a dispersion compensating fiber. Now I can get Q-factor of about 43 while the min. BER is zero after simulation.

+1

[Brian PamuktiParticipant]

Thanks a lot! It’s working now. Maybe the last question sir. If i use pseudo random, Ber and Q factor crowded immediately. What should I do,sir?

[alistuParticipant]

You’re welcome. I don’t know the reason, but I did a couple of things to get better Q-factor. I reduced input laser power to 0dB and reduced receiver filter bandwidth to 50 GHz. This way, I got Q-factor of about 5.82. I suggest you increase sequence length to get more accurate results.