Effective Refractive Index

[bhogan1984]

Hi Guys,

Apologies if this is a silly question. I am looking to calculate the effective refractive index of a given layer in my structure. Before writing the code to use normalised fields and the refractive index at each point in the lattice I was wondering if there is a command within S4 which I can use to make this calculation for me.

Any help would be appreciated. Brian