For the GRIN Lens Component, Inhomogeneous Medium Component
The RK-BPM solver works in the spatial domain (x domain), in a pointwise manner. Mathematically, it solves, simultaneously,one ordinary differential equation (ODE) for the light path, and another ODE for the field polarization vector.
The solution of the ODEs is based on the standard Runge-Kutta (RK) forth-order method. In comparison to the ray tracing for GRIN medium – that solves the light path – we extend it to embrace the field quantities i.e. the complex amplitude and polarization.
>>> White Paper - Runge-Kutta Beam Propagation Method |
