EPIPPROP

Export AWGs and Echelle Gratings for Full Circuit Simulation

with EPIPPROP and PICWave

Scattering matrix spectra calculated in Epipprop can be exported to PICWave so AWGs and Echelle gratings can be included in large scale photonic integrated circuit simulations including active components.

An FIR section in PICWave allows one to import the wavelength response of passive components like AWGs and generate an equivalent time-domain filter so that the component can be modelled in the time-domain. It's as simple as 'copy and paste' to add the results of an Epipprop simulation to PICWave.

Scattering matrix spectrum copied to PICWave FIR section (including reflections)

In our standard example, a scattering matrix spectrum of a 'Top-Hat' AWG is imported to a PICWave FIR section, including the AWG's facet reflections. These reflections have a significant impact on the eight high reflectivity DFB lasers. Light reflected back into the DFB causes the linewidth of each laser to drastically widen by a factor of roughly 2000 in one case.

Effect on laser linewidth of DFB laser when AWG reflections are taken into account

See section 8.3.3 of the PICWave manual to learn how to paste an scattering matrix spectrum to an FIR section.