- This topic has 10 replies, 4 voices, and was last updated 8 years, 9 months ago by
Sasha.
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September 28, 2015 at 1:23 am #25270
koll
ParticipantHi I got problem connecting my output port subsystem to another input port. Please help. Thank you. Please find attached OSD file
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September 28, 2015 at 3:42 am #25422
alistu
ParticipantHi Koll,
Please see if you intended to make connections as in the file attached. This is a common problem that I have also encountered many times, especially when I was using 32-bit OptiSystem (I don’t know if it has anything to do with that) and when I use a lot of subsystems.
The problem is, you make a connection and then look inside a subsystem or save the file. After that, you see that connection is gone! And of course you cannot connect it again, as “cannot connect an already connected port”. But what is really going on is that the connection is established and if you close the software and then open the file again, you can see it there. So every time you see an already established connection not being there, restart the software.
Regards
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September 30, 2015 at 4:25 pm #25527
alistu
ParticipantHi koll,
The only thing I have done is replacing the WDM Demux with Ideal Demux (I could have just modified the WDM Demux characteristics instead of using ideal demux by the way). Please download and just run the simulation and verify if the BER in the upstream is acceptable.
Regards
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September 30, 2015 at 10:42 pm #25534
koll
ParticipantHi But I would like to input frequency for the demux. 🙁 Could you show me how to ues wdm demux instead?
thank you.
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October 2, 2015 at 10:03 pm #25684
Sasha
ParticipantHi All,
I tried implementing the same WDM PON but I used the bidirectional feeder fiber and connected optical delay between feeder fiber and AWG. When I am running the simulation, Optisystem is closed.
I attached a file here.
Thanks in advance.
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October 3, 2015 at 12:26 am #25689
kelly howard
Participanthi i have changed APD to PIN and it run smoothly
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October 3, 2015 at 12:39 am #25691
kelly howard
Participanthi sasha,
i tried to run the simulation u have upload with APD changed to PIN, the result is bad. The BER is 1 be it upstream or downstream
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October 3, 2015 at 3:19 pm #25743
Sasha
ParticipantHello Kelly,
That is upstream. I changed the WDM demux Wavelength, now I am getting two eye diagrams properly.
I designed WDM-PON, datarate = 10Gbps, channel spacing = 100Ghz, one bidirectinal feeder fiber, add an optical delay between feeder fiber and AWG.
I am not getting the proper eye diagram. Do you have any idea, how to get ?
Thanks in advance.
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October 3, 2015 at 3:41 pm #25746
Sasha
ParticipantHi all,
One more question, I used bidrectional feeder fiber with wavelength = 1500nm but in WDM PON, I used different wavelength to transmit in the fiber, how it works?
Thanks in advance.
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October 3, 2015 at 11:07 pm #25755
Sasha
Participant
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