January 26, 2024 at 7:54 pm
minusunny
Subscriber

I am using SWG based MMI.  Can i use EME? I used FDTD for that. Can i use the same s parameter extraction for FDTD? Also, i did an s parameter sweep in FDTD and saved the sparameter value in lumerical format and exported it to the interconnect i got this error:

SPAR_1: Fitting for '256' coefficients...

SPAR_1: Error in fit is '0.00109188'.

SPAR_1: Calculating filter coefficients at '1.931e+14' Hz ...

SPAR_1: Fitting for '256' coefficients...

SPAR_1: Error in fit is '0.00171933'.

SPAR_1: Calculating filter coefficients at '1.931e+14' Hz ...

SPAR_1: Fitting for '256' coefficients...

SPAR_1: Error in fit is '0.0020334'.

SPAR_1: Calculating filter coefficients at '1.931e+14' Hz ...

SPAR_1: Fitting for '256' coefficients...

SPAR_1: Error in fit is '0.00203526'.

 

Is it because i did not use the right format to export?