and avoid confusion with EmPy/empy.
EMpy (not to be confused with EmPy) is a suite of numerical algorithms widely
used in electromagnetism The package contains:
* an isotropic and anisotropic transfer matrix algorithm;
* an isotropic and anisotropic rigorous coupled wave analysis
(RCWA) algorithm;
* the numerical model of the frequency response of different well-known
devices (Mach-Zehnder, Ring Resonators, etc.)