Arrayed Waveguide Grating (AWG) coupler has inhomogeneity compensated to produce essentially same spectral resolution as for coupler without inhomogeneity for same wavelengths

摘要

The Arrayed Waveguide Grating or AWG coupler has an inhomogeneity that influences or adversely affects the propagation of light. The inhomogeneity is compensated to produce an AWG coupler with essentially the same spectral resolution as an AWG coupler without an inhomogeneity for the same wavelengths. The compensation is achieved bat least partly by using an altered layout on the substrate used to manufacture the coupler. Independent claims are also included for the following: a method of manufacturing an inventive device and a substrate with an inventive device.