Arrayed waveguide grating multiplexers with flat spectral response using non-uniform arrays

Abstract

So far arrayed waveguide grating (AWG) multi/demultiplexers have been fabricated based on uniform arrayed waveguide grating, having very sharp passband. Consequently they are sensitive to wavelength fluctuations of the laser sources. In this paper by optimizing the lengths algorithm, nonuniform A W G has been designed with flat passband.

Iterative method for optimal design of flat-spectral-response arrayed waveguide gratings

“…Theoretical modeling and optimal design of AWG structure are important topics. The mathematical models of AWGs based on Fourier optics have become the preferred model choices for very simple and accurate means of simulating main device characteristics [2][3][4]. Furthermore, the accurate mathematical model can provide the merit function for the specified optimization algorithm.…”