Search Results for 'wdm'

[Ekrem KORKMAZ]

How do i improve the Q factor in BER analyzers? I also designed a WDM system which i used WDM mux&demux. The BER diagram is much more stable in WDM system.

[Ekrem KORKMAZ]

I am trying to create a active optical network(AON) in Optisystem. I searched internet inside out. But i can’t find any project or article to help. All projects are about TDM, WDM, GPON, BPON etc. Nothing about active optical networks.
I know that an AON uses ethernet switch. (And also no project samples in the internet about EPON as EPON is called “Active Ethernet”.) But i cant quite find the right component. When i type “switch” in “find component”, the result is shown in the image following:

And the system i designed is like that:
I don’t know if this is an AON system or not. Can you help me with that? Any help is appriciated.

Thank you.

[ELBAR salim]

Hi all
I need help to make a simulation of wdm pon and BPON, a tray but I can’t arrive at the correct design
in the attached file my attempt
br

[ELBAR salim]

hi all

need help to make designe of an wdp-pon end bpon

Br

[LamaParticipant]

Hi … Thank you … Please reference the wavelength within the fiber and the wavelength of each channel How can their values ​​be determined in the WDM system … Is the reference wavelength the same for the fiber or the channel at the DEMUX output

[Abdalnaser .F Kaeib]

Hello …. I have a question about mitigating the nonlinear effects in a coherent WDM system … and should one receiver with DSP be used at each receiving channel or can we use DSP for all channels.

naser.kaeib@gmail.com

[Lama]

Hi … I have a question whether DSP is helping me to offset the effect of XPM, FWM in the optical system DP-QPSK and how can I do that
lmoh21481@gmail.com

[Negeri Merga]

Hello guys
I am working on radio over fiber using WDM with 4QAM-OFDM 16QAM-OFDM and 64 QAM-OFDM schemes but i can’t get good constellaton diagram for my QAM -OFDM’S
can you help me why please?

[Divyangna Gandhi]

Hello Sir

I have read one paper and try to implement it in optisystem but i Have one doubt.

In this paper wavelength range used 1525-1625nm, channel spacing 0.2nm and number of channels 100.How could it possible 100 channels with o.2nm channel spacing in between 1525nm to 1625nm(100nm).

As per my knowledge it should be 500 channels
if we use 1525-1625nm wavelength = 100nm/0.2nm spacing =500 channels
Results also shown with 1525 to 1625nm with 100 channels
kindly solve it

[Adrian Celej]

Hello,

I have a problem with OptiSystem. I am trying to simulate DWDM link and before MUX Optical Power Meter and WDM Analyzer the optical signal have strong power, but when I measure the signal at out of MUX it is disappear.

I also tried with Ideal Mux – result is the same.
I attach OpitSystem project. Please help me resolve this problem.
OptiSystem version 17.0.0

Thank you.

Best regards,
Adrian Celej

[AraSh BarghikarParticipant]

Dear ahmad
Thanks for your response. What do u mean by project design?
Can I simulate 200 Gbps dwdm system with qam modulator and coherent receiver?
Should I use fiber optic or cwdm fiber optic?
Tnx a lot

[AraSh Barghikar]

Hello.
How many DWDM channel can I simulate with my optisystem15?
For example can I simulate 80 DWDM channel with 100G spacing and 200 Gbps\channel??
Tnx

[shaymaa Tahhan]

dear colleges,
I am trying to simulate QAM4-OFDM WDM PON system.
BER tester is utilized in the OFDM part .
the system shows the EVM but always it shows BER=zero and it doesn’t realistic.
the input signals are CW 193.1 THz 193.16, 193.2, 193.26 THz, line width is 0.1 MHz.
the system speed is 10 Gb/s. is the line width of the CW laser source has the effect on the BER appearance? or what?
your help is highly appreciated.

[Delson do Amaral Vaz Contreiras]

Saudações!
Estou montando uma rede GPON WDM, mas o sinal não chega no splitter de segundo nível, já aumentei o nível de potência no transmissor, já coloquei um amplificador EDFA, e ainda assim não obtive sucesso. Agredecia que me ajudassem a solucionar este problema para que eu possa dar sequencia na minha tese.

[Delson do Amaral Vaz Contreiras]

Saudações!
Não consigo ter sinal no meu splitter bidirecional no segundo nível, o que será?