[Tung Tran VanParticipant]

I have uploaded my project simulating Raman Amplifier which compensating loss of 100km fiber, but it does not work. Plz help. Thanks

Attachments:

1. ORA2.osd

[Tung Tran VanParticipant]

I have same problem . Signal is not amplified when using coupler. Plz help me. I use Optisys v14. Thanks

[Tung Tran VanParticipant]

In theory, Raman amplifier’s NF is small (or even negative), but in the sample .osd file, NF is very high. How to reduce it to resemble theory???

[Tung Tran VanParticipant]

Could you run my attached project and see if there is error?
Thanks you

[Tung Tran VanParticipant]

My laptop has 8GB ram and optisystem consume only about 30% memory when calculating. so I think the cause is not due to weak laptop configuration.

[Tung Tran VanParticipant]

I use Optisystem v7.0 and OS windows 10

[Tung Tran VanParticipant]

Thanks FAYIQA NAQSHBANDI
as I know, a iteration parameter is often used in the bidirectional or ring network design . If my system is the point – point transmission , it can improve ouput OSNR of the ORA ?

[Tung Tran VanParticipant]

Hi all,
in theory, an optical Raman amplifiers (ORA) increases the OSNR of input signals, but my designed ORA reduces OSNR wdm channels greatly.
what should I do to improve my ORA?
Thanks all

Attachments:

1. 

   Untitled2.png
   

1. ORA.osd

[Tung Tran VanParticipant]

Yep Ranjeet Kumar.
why those BER analyzers dont work? Is my project wrong or does optical ring controller work incorrectly?

[Tung Tran VanParticipant]

any one help me? I think the optical ring controller works incorrectly.

[Tung Tran VanParticipant]

Hi alisu and Ranjeet Kumar
In a project “Interchannel crosstalk at ADM in a ring network”, I have replaced the photodetector PINs and filters by optical receivers.
I dont understand why I just measured BER of 2 nodes (node 1 & node 4).
?

Attachments:

1. Interchannel-crosstalk-at-ADM-in-a-ring-network-Copy1.osd

[Tung Tran VanParticipant]

I attached my project.

Attachments:

1. Test21.osd

[Tung Tran VanParticipant]

Thanks alistu
I used DCFs in every nodes, they are between PAs & OAs. I set dispersion.dat for SMFs (G652) & DispersionDCFNew.dat for DCFs (named DCMs). So I think dispersion is compensated. Moreover, the bad received signal only at the nodes with Raman Amps.

Attachments:

1. dispersion.txt
2. DispersionDCFNew.txt

[Tung Tran VanParticipant]

Hi all.
Because my project is so complicated, I have deleted some components in it to look better. At some nodes with Raman Amp (node3, node 4), the received signal quality is so bad, Q factor is low. Plz, give me a suggestion to improve system performance.
I attach my project with wavelength assignment schemes.
Thank you so much.

Attachments:

1. 

   Untitled.png
   

2. 

   Untitled1.png
   

1. Project2.osd

[Tung Tran VanParticipant]

Thanks all.

@Fayiqa Naqshbandi: :(. I’m using OptiSys v7, so I can’t open your osd file.
But when increasing the input laser power, Optisys will caculate too slowly because of nonlinear effects. 🙁