Search Results for 'wdm'

[Mahmoud Hanouneh]

Hello there,
Here is a BPON network from the Samples Folder in Optisystem.
An modification was added by me to the network by adding an EDFA Amplifier in order to increase the optical pulse quality

The problem is once I edite the power in (WDM-transmitter) inside ONU .., then the Q.Factor becomes “0” ! and BER indicates to “1” !! ((IN UPSTREAM))

So, could anyone of you guys help me with this ..
Thanks,

[Ahmad AtiehModerator]

yes you can use it for DWDM systems as dispersion compensator or filter.

[rajkumar gupta]

can FBG used for DWDM system?

[Ahmad AtiehModerator]

Dear Alabbas,
The EDFA noise figure calculation depends on the bandwidth used for calculating the noise power as described in the attached datasheet of the WDM Analyzer Visualizer. You may access it by right click on the visualizer, then select Help.
Regards,
Ahmad

[Alabbas Al-Azzawi]

Dear sirs/madam,

I’m working on the erbium doped fiber amplifier. I designed a simple configuration of single-pass EDFA. I used a dual port WDM analyzer to calculate the gain and noise figure characteristics.

As I know, the noise figure is calculated by using this equation: NF = (SNR)in – (SNR)out.
However, I got different NF when I used the equation above (please see the attached photo).

Could you please inform me what the equation that used by dual port WDM analyzer to calculate the NF.

Thank you.
Best regards.

[Doaa Ali]

HELLO,
Could you please tell me how to choose the values of the bandwidth of both WDM MUX & D-MUX? (For example: 2 channels with 193.1 & 193.3 THz and 1 Gbps data rate for each of them)

Thanks with Regards

[sanjiv kumar]

Anyone please help me in how to calculate reflectivity from fbg sensor reflected spectrum of WDM interrogator output Or any other mean .

[Stephen Cp]

Hello I look after a large DWDM ROADM network and I’m looking for reporting stats and KPI ideas. What would be your top 5 or 10 KPI’s for this?

[Neha Sharma]

Respected Sir/ Madam
Designed the SCM WDM RoF in optisystem 17 as my basepaper is also implemented in optisystem 17 and I kept all the same parameters as mentioned in my base paper .But I don’t know why output is not coming (BER and Q factor are 1 and zero ) and in transmitter a lot of noise is coming and receiver showing zero output .I am attaching the osd file .
Thank you

[samia hafsaParticipant]

dear Ranjeet Kumar,
please can you provid me a screen shot of the hybrid TWDM PON
regards

[alaa Jarah]

I work on the example Located in the “OptiSystem – Hot Topics/Optical OFDM Design – Direct and Coherent Detection”
I am trying to connect the third and fourth channels to WDM but I can’t calculate the “delay compensation” in OFDM Demodulation
as shown in the file attached to the E-mail message.
The BER is incorrect value and I don’t solve this
Can anyone help me and correct my work, please

Regards

[samia hafsa]

hi everyone,

I want to design the hybrid OCDMA / WDM system under optisystem, can any one help me please.

best regards

• This topic was modified 4 years, 11 months ago by samia hafsa.

[Damini Rathi]

Hello,
I am working on the layout of a research paper based on topic “Simulating Analyzing of Covering Suburban Areas with 32× 10 Gbps DWDM-PON FTTH Using Different Dispersion and Power.” but I am unable to get results as it is taking too long to calculate optical fiber while running the simulation. The time is exceeding 11 minutes. I have set all the parameters according to the research paper. Please help me out with the simulation. I have attached .osd file and research paper herewith.<a href=”http://www.jocm.us/uploadfile/2019/0409/20190409050508846.pdf&#8221; rel=”noopener” target=”_blank”>Research paper</a>

• This topic was modified 5 years, 1 month ago by Damini Rathi.

[AraSh Barghikar]

hi. i designed 150 km dual polarization QSPK with coherent detection in 4 WDM channel and use DSP for QPSK component in order to compensate impairments. obviously without EDFA the results are not good. but when i increase the length of fiber to 160km, the BER become very very good!!!
how can i describe this?
or where is the problem?
thanks

[Ekrem KORKMAZ]

Greetings. I want to learn how to analyze BER diagrams. I understand the eye diagram. There are lots of articles on the internet about it. But I can’t find any source about Q factor and how to analyze it.
I am currently using OptiSystem 17.1 and the attachment includes 2 BER diagrams of my TWDM PON system designs that I have nothing to commentate. Any help appreciated.