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DD-optical OFDM

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(joined January 2018)
Participant

Hi.
I am studying and simulating dd-optical ofdm. and i am remaking and trying to simulate the builtin dd ofdm circuit . In this circuit loop control is used for increasing the fiber length, and i just dont want to use it so i am just directly connecting the 50km OF to the photodetector, but by doing that the ber becomes 1 and constellation diagram also gets different location point or phase is changed. Can anyone please tell me why is this happening.?
Thank you.

Responses (6):

  • #59151
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    Kam
    Participant

    Hi.
    I am studying and simulating dd-optical ofdm. and i am remaking and trying to simulate the builtin dd ofdm circuit . In this circuit loop control is used for increasing the fiber length, and i just dont want to use it so i am just directly connecting the 50km OF to the photodetector, but by doing that the ber becomes 1 and constellation diagram also gets different location point or phase is changed. Can anyone please tell me why is this happening.?
    Thank you.

  • #59161
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    Joshua Donald
    Moderator

    Hi Kam,

    Would you be able to upload your file in a ZIP folder so i can have a look at it and try to answer your question.

    Thanks,

    Josh

  • #59166
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    Kam
    Participant

    Thanks alot for replying Joshua. Please find the zip folder attached. there are two files in it. one is the original/reference file i took from optiwave examples named “direct detection optical ofdm system” and the other file which i have made which is exactly the same as the reference file is “practice dd-oofdm”. Thank you .

  • #59169
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    Kam
    Participant

    I am sorry but i have tried 3 times but the files are not getting uploaded. how do i do it? 🙁

  • #59170
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    Kam
    Participant

    i am trying to send my circuit again. Thank you

  • #59171
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    Joshua Donald
    Moderator

    Hi Kam,

    Can you try sending the files to my email in a ZIP folder.

    My email is joshua.donald@optiwave.com

    thanks,

    Josh

  • #59174
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    Kam
    Participant

    Yes I have sent them on your id. Thank you.

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