Learning Forum

[YounusMandalawi]

I used the code provided here https://support.lumerical.com/hc/en-us/articles/360034383114-Creating-a-custom-source-time-signal-for-an-FDTD-source to get two gaussian pulses as below.

[Kyle]

nTo use this signal you will have to somehow change lines 17 and 18 to create a vector that corresponds to your time signal. I don't think there are any built-in functions to create the type of signal you're interested in, unless you can use mathematical functions like the double Gaussian pulse example. Alternatively, if you have the data for the signal in a text file you could import the data with the readdata command:nn

[YounusMandalawi]

Thank you. I changed the numbers in that equation to get different pulse duration and gaussian order.nn

[YounusMandalawi]

I have one more question please. Is is normal that at the time monitor, I only can see the signal at the Z dimension only??? It is 0 for X and Y. nn

[Kyle]

This will depend on the polarization of the source, not the time signal. If you have a plane wave polarized in the z direction the x and y components of the electric field will be zero.n