FDTD

Finite difference time domain (FDTD) simulations directly solve Maxwell’s equations, which are the fundamental description of the physics of classical electrodynamics.

FDTD simulations compute the Sparameters response of a component, which measures the input to output field relationship as a function of wavelength or frequency.

gdsfactory provides you a similar python API to drive 3 different FDTD simulators:

• MEEP

• tidy3d

• Lumerical Ansys FDTD

Gdsfactory follows the Sparameters syntax o1@0,o2@0 where o1 is the input port @0 mode 0 (usually fundamental TE mode) and o2@0 refers to output port o2 mode 0.

• FDTD tidy3d
• GPU-accelerated FDTD with fdtdz
• Meep FDTD
• FDTD Meep gratings
• FDTD Lumerical