[Mohamed A. A. AbouseifParticipant]

Hi Bhagyalaxmi,
There are different optical amplifiers, Omni-directional and bidirectional. based on the V number (as function of core radius, the operating wavelength, refractive indexes) you can specify the number of modes to be excited inside the optical fiber.
One example is the “Er Doped Fiber” bidirectional component.

Hope that helps,
thanks
Mohamed Abouseif

[Mohamed A. A. AbouseifParticipant]

Good luck

Mohamed

[Mohamed A. A. AbouseifParticipant]

Hi Rahaf,
Have you checked the “Load Matlab” check box when you run the program?
this will make it show up again every time you run the program.

thanks
Mohamed

[Mohamed A. A. AbouseifParticipant]

Great,
good luck
Mohamed Abouseif

[Mohamed A. A. AbouseifParticipant]

Hi Alaa,
Sweep iteration is used to make the user able to run the program many times at different values of a component parameter.
For example, if you choose your sweep iterator to be 10. Then that means you can choose to do the calculations 10 times and give any parameter of any component 10 values.

I encourage you to check the following link for detailed description:

Lesson 4: Parameter Sweeps — BER x Input Power

Also, there are other lessons that might help you as an OptiSystem’s beginner-user to acquire the basics and the fundamentals and even to go deeply to the program.

Hope that helps,
thanks
Mohamed Abouseif

[Mohamed A. A. AbouseifParticipant]

Hi Alaa,
for the project of the screenshot you have sent to me, here is my suggestion to connect BER visualizer.
you can replace the “Pseudo-Random Bit Sequence Generator” and use the data generated by “BER Test Set”. Also connect the output of the QAM to the input of the “BER Test Set”. in this case the “BER Test Set” can compare the output bit stream to the input bit stream of the communication system.
so you can display Bit Errors, BER ..and other output statistics.

Hope that helps,
thanks
Mohamed

[Mohamed A. A. AbouseifParticipant]

nothing is attached!

Mohamed

[Mohamed A. A. AbouseifParticipant]

Here is the screen shoot.

thanks
Mohamed

Attachments:

1. ScreeShoot1.docx

[Mohamed A. A. AbouseifParticipant]

Ina,
here is the project again.

Mohamed

Attachments:

1. Orthogonal-Modulation-Revised_MohamedAbouseif-1.zip

[Mohamed A. A. AbouseifParticipant]

Hi Ina
here is the screen shoot and the program itself just in case you can open it this time.

good luck
thanks
Mohamed

Attachments:

1. SceenShot.docx

[Mohamed A. A. AbouseifParticipant]

Hi Shaymaa,

there is component named SOA, that can be used.

CW Laser diode could be used for your block High-Speed LD”.

for EOM, there are different modulators that could be used like “AM”, “Mach-Zehnder Modulator”, “Burst Modulator” and other modulators. you can use one of them based on the required output of the block diagram.

For the digital delay generator, there are three delay components “Binary Delay”, “Optical Delay”, and “Electrical Delay”. you can uses one of them based on your design. I mean, based on the type of the signal that you will delay you can use the suitable one of them.

For the Pattern generator, you can either use “User Defined Bit Sequence Generator” if you want to generate specific pattern or use “Pseudo-Random Bit Sequence Generator” for random bits generation.

So all blocks exist in OptiSystem to be used to build your system.
Hope that helps.
let us know if you have any other comments.
best of luck.

Mohamed Abouseif

[Mohamed A. A. AbouseifParticipant]

Hi Alaa,
To import the plot of any visualizer, there is an icon on the top left beside the Sampled tab. If you click on this icon, a menu appears including different options. One of these option is “Copy Image to Clipboard”, you can use it to import the results to word. Another option is “Export Data”.
to have x-y data. Other options you can use.

Hope that helps,
thanks
Mohamed Abouseif

[Mohamed A. A. AbouseifParticipant]

Hi Alaa,
can you send us a specific example and where you want to use visualizer, and we will try to handle your request.

Regards,
Mohamed Abouseif

[Mohamed A. A. AbouseifParticipant]

sorry here is the project,

Mohamed

Attachments:

1. Orthogonal-Modulation-Revised_MohamedAbouseif.zip

[Mohamed A. A. AbouseifParticipant]

Ina,
if you compare layout2 and the Data2 QPSK, you might notice the difference is only that the input to the MZ is CW.
So based on this notice, I have replaced the input of MZ of the data2 by a combination of output of Data1 and another CW laser.
you will find that in the attached project for you. another important point based on this notice is that, the higher the power of the CW laser, the higher the Q factor of Data2.
I think this would help you the problem. just try to adjust the CW laser power to have acceptable Q factor for Data1 and Data2.
I think also the same Scenario will be used to add Data3 as well.

It is an interesting example
please update me on the progress if there is anything else we can help.

thanks
Mohamed