EPIPPROP

Echelle Grating Model

In addition to the standard features of Epipprop's model, our Echelle grating model includes the following features:

• Tunable grating templates for Rowland circle, bifocal point stigmatic designs and our unique Photon Design Perfect Chirped Grating design.

• Space output waveguide channels by wavelength and frequency for Rowland circle and Perfect Chirped Grating designs. 

• Import any arbitrary user-defined grating. 

• Four different facet geometries including flat facets, curved facets, corner mirrors and DBRs (includes a 1D DBR Model of reflection). 

• Supports any grating surface, including metals. 

• Propagation algorithm supports reflections between grating facets, allowing you to design complex grating topologies such as corner mirrors.

• Control tilt on grating facets in the plane for any blazed grating.

• Tilt the grating out of plane to model non-vertical facets and coupling between multiple vertical slab modes.

• Model fabrication tolerances by modelling corner rounding of the grating facets, even for imported gratings.

• Simulate multiple vertical slab modes and the coupling between them.

• Import response curves to model any arbitrary reflectivity from the grating surface.

Schematic view of bifocal point stigmatic echelle grating in Epipprop;
the waveguide arrays are at the top-left corner