The Polarization node adds an externally generated polarization Pi, which contributes to the total polarization

As indicated above, each Polarization node adds a contribution to the total polarization. For the bidirectional formulation a polarization should be input for each wave and the polarization contribution is the sum of the two waves’ polarizations

Enter the components (x, y, and z for 3D components for example) of the Polarization, first wave Pi1 (SI unit: C/m2) and, for the bidirectional formulation, the Polarization, second wave Pi2 (SI unit: C/m2).