[Abdullah BaigParticipant]

Sir RK Sethi Thankx alot for guidance. Sir you gave valuable information, which will definitely help me during writing paper.
Sir Thankx again

[Abdullah BaigParticipant]

Sir Thankyou

[Abdullah BaigParticipant]

Thanx alot 🙂

[Abdullah BaigParticipant]

Sir Thankyou

Can you tell me the names of some publishers. Actually this is my 1st publication and i do not know well.
Best Regards

i Know 1 publisher i-e Springer

[Abdullah BaigParticipant]

Agree With Ravil

[Abdullah BaigParticipant]

Thanx Dear Ravil ,Abhishek Shrama, Damian Marek

[Abdullah BaigParticipant]

I modified the system and simulate it without any amplifier and the results are good with low BER and Q factor=15

I want to inquire:

1-Can i simulate the system without Optical Amplifier or EDFA with Fiber Length =50km

2-On which Fiber Length it becomes necessary to use amplifier?

[Abdullah BaigParticipant]

As results are good at 5m EDFA Length.

[Abdullah BaigParticipant]

Can we take EDFA Length 5m for 50km Optical Fiber Length.As 5m is Default value?

[Abdullah BaigParticipant]

Hi Ravil
Thanx for your reply
You are right when i reduce system bitrate upto 8Gbit/s timing jitter removes from uplink. But it appears at 13Gbit/s.

I am using wavelength reuse concept and down link wavelength is using in uplink part.

1-The downlink system is good at 13Gbit/s So i can not change the system bitrate to 8Gbit/s and i have to optimize uplink on 13Gbit/s.

2- How can i tackle with timing Jitter that is appeared on uplink???

And Fiber length is not Paying any effect on Timing Jitter. Whether i increases or decreases the length….. Showing same results on 25km and 75km.

[Abdullah BaigParticipant]

Sir Abdallah Thanx for Reply. Got your point 🙂

[Abdullah BaigParticipant]

Dear Ravil
please guide me how can i reduce the Timing Jitter. I changed the Filter From Low Pass Rectangular to Bessel and Gaussian But result remains same.
I also used DCF but results do not varied.

Should i use 3R regeneration???

[Abdullah BaigParticipant]

Dear Ravil Thanx alot for your reply

Actually my Project has two parts: Downlink and uplink. In downlink the fiber length is 110km but the results are good with no timing jitter.

But the picture which is shown in attachment: is of uplink. And the fiber length in this case is 75km. But when i reduce the fiber length i-e 25km then just q Factor increases but the eye diagram remains same with same timing Jitter as shown in attachment above Pic 1.

I am not using 3R regeneration at the end in Receiver.But using Low Pass Rectangular Filter as shown in circuit.png

[Abdullah BaigParticipant]

Sir Abdallah Thanx for reply.
1-Why there is gap between two curves as highlighted with red in pic-1? Is there any way to make the gap narrow and make eye diagram more clear?
2-Should i finalize the above design?

Because my target was to get the eye diagram as shown in pic-2

Attachments:

1. 

   Pic-1.png
   

2. 

   Pic-2.png
   

[Abdullah BaigParticipant]

Should i change the filter so that close lines of eye diagram are obtained.