Echelle Layout Program 2, v1.3.1

v1.3.1 (now with documentation and missing file added)

When designing integrated wavelength division multiplexing systems using photonic chips, different methods for wavelength filtering are available.
One of them are planar concave gratings or Échelle gratings. For such Echelle gratings, differend construction methods exist, like Rowland Circle method and Two Stigmatic Point (TSP) method.

This MATLAB app implements my version of the TSP method to calculate arbitrary Echelle gratings with Bragg grating reflectors. From this, a simulation project for COMSOL Multiphysics can be generated to simulate the Echelle grating in 2D, as well as a GDSII layout for using the grating in a chip design. Additionally a sample file for Synopsys OptoDesigner is generated.