Learning Forum

[Fatemeh Karami]

Dear all,

 

I downloaded the "inverse design y-branch" simulation file provided on the website and ran it. However, the issue is that the transmission plot shown on the website (please find the attachment), where the transmission is almost 1 for a range of wavelengths from 1300nm to 1800nm, cannot be the same as what I obtained (please see the second attached photo).

 

I would appreciate it if you could assist me.

 

Best regards,

FK

 

[Guilin Sun]

It seems you are simulating 3D FDTD, right?

where is the port source and where is the transmission monitor? in one port or it covers both ports on the right?

 

[Fatemeh Karami]

yes, I am.

The port source is located in the left side and the monitor is located in the right side which covers both ports.

[Guilin Sun]

For the 3D case, I did not duplicate the results either. Maybe something was changed. we need time to dig up.

[Fatemeh Karami]

I appreciate your support and response.

[Fatemeh Karami]

 

I wonder, could you find the problem with what happened to the transmission?”

 

[Guilin Sun]

Ｉ guess that you placed the monitor in one of the output waveguides. In the example it uses only one output with anti-sym boudaries conditions so the transmission is close to one. You did not use such symmetry BC.

 

 

Please check.

[Fatemeh Karami]

Thank you very much, my problem has been solved.