Learning Forum

[anindya]

Dear Experts,

I want to apply a time domain pulse source in the order of nanosecond or femtosecond duration (100 ns or 100 fs) to the input of a waveguide and to study it's delay characteristics.Is there any way to produce such sources in FDTD? Can we produce it using some program codes? Any kind of  support will be highly appreciated.I will look forward to a response.

 

Thanks and regards,

Anindya Bose

[Guilin Sun]

You can either use the default source pulse or create your own: https://optics.ansys.com/hc/en-us/articles/360034383114-Creating-a-custom-source-time-signal-for-an-FDTD-source 

example:

https://optics.ansys.com/hc/en-us/articles/360042800113-Group-delay-analysis

 

But for the waveguide delay, you can accurately use FDE to get: 

https://optics.ansys.com/hc/en-us/articles/360042800453-Waveguide-FDE