- This topic has 20 replies, 4 voices, and was last updated 8 years, 9 months ago by
Ashu verma.
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September 10, 2015 at 1:15 am #24513
aasif bashir dar
Participantthe attached .osd file shows problem in BER analyser (after the electronic equalizer).
with regards
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September 11, 2015 at 3:09 am #24580
Ashu verma
ParticipantHi! Asif
Your system works fine and you made it by considering all the technical values needs to set for the several components such as Fbg,Edfa etc.The only thing i have corrected is just inserted a loop control for you each transmission subsystem consisting of smf ,,fbg and edfa.your system gives Ber of 10^-10 after 8 loops which distance is equal to the subsystems attachrd by you.Now one loop consisting of smf 100 km edfa 20 dB and smf then FBG.
Check the attached fileAttachments:
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September 11, 2015 at 3:23 am #24583
alistu
ParticipantThank you Sam for considering the file Aasif has attached. But it seems that the problem Aasif was referring to and started this topic for is still there. The BER analyzer after the electronic equalizer is still not working.
Damian had formerly suggested two ways to overcome this, but neither work here.
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September 11, 2015 at 4:34 am #24587
Ashu verma
ParticipantHi alistu,my mistake.Now set tge value forward taps constant in equilizer to 1 and feedback tap cofficient to 1 also and here you go .
Cheers! -
September 11, 2015 at 5:01 am #24590
Ashu verma
ParticipantAlistu i just read the tutorial of electronic equilizer and the vakue of feedback can be varied from 1 to 1000 .So without considering other factors i just itrate the equilizer for some values and got these results.It may somehow change the design also.But i have tried it with many ways but found this is the only way that i got results.
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September 11, 2015 at 5:14 am #24591
alistu
ParticipantThank you. I didn’t say the value is out of range, I just meant this should not be the way (because of changing the design). Otherwise, we have a technical Optisystem problem. Another solution would be not to use equalizer at all, which is again not the right solution. However, I don’t know about Aasif’s equalizer design.
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September 12, 2015 at 1:30 pm #24660
aasif bashir dar
ParticipantTHANX ALL FOR REPLYING
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September 12, 2015 at 1:38 pm #24662
Ashu verma
ParticipantWelcome asif,i need to know wether the design of equilizer you made changed in one of my file? I have some changes in the file you and let me know if you find it helpful or about the design of equilizer .
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September 12, 2015 at 4:06 pm #24672
gaganpreet Kaur
ParticipantSam could u send me the snapshot of the file . i am having problem with BER nd Eye diagram analyzer
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September 13, 2015 at 8:12 am #24692
alistu
ParticipantHi Gaganpreet,
I am assuming you want to have a snapshot of the modified file. Here’s a snapshot of the system implementation from the modified file without error in the BER analyzer. Also, I have attached a snapshot from the electronic equalizer settings, where the changes in coefficients was being discussed here.
Regards
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September 13, 2015 at 9:24 am #24698
Ashu verma
ParticipantThank you Alistu for attaching the screen shot i was little confused what files screen shot Gagan was reffering too.Gagan i have just changed the forward and backward feed. To 1 . and it works fine .you can do it in your version too.in case of any problem let us know
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September 13, 2015 at 7:51 am #24690
Ashu verma
ParticipantHi Gagan which snapshot you are reffering to? Is it of the file that author attached? Or one i have corrected by changing Equilizer?? Let me know then i will attach the screen shot even if you require both files.
Thank you -
September 13, 2015 at 12:47 pm #24700
aasif bashir dar
Participanti will let u know when i will try it
this time i am busy in exams
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September 13, 2015 at 3:59 pm #24713
gaganpreet Kaur
ParticipantThank you alistu so much . i have seen the snap shot and wanted to know role and placement of elctronic equalizers . thank u somuch . i have not yet simluated the system as i am stuck with long hrs of my 100channel DWDM system but i will surely get back to u after i simulate for further help.
thanks sam but i got the snap shot -
September 14, 2015 at 1:22 am #24741
gaganpreet Kaur
ParticipantHi alistu sorry i got confused are u refering to suggestion of decreasing power for my 100 channel system?
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September 22, 2015 at 2:23 am #25085
aasif bashir dar
Participanti am not getting any results
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September 22, 2015 at 6:29 am #25089
alistu
ParticipantHi Aasif, Could you please upload the osd file of your system? Or address the system you’re referring to? Thanks.
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September 23, 2015 at 8:05 am #25148
Ashu verma
ParticipantHi Asif
From your reply it seems that you are referring to the problem Ber system you attached and i modified it some time ago.However the modified file in my first reply is not correct because i changed only fibers into loop and forgot to check Ber after equilizer.Now you just need to make small change in equilizer as i suggsted in reply 24587 and your ber diagram at vizulizer.
Regards
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