Evanescent field analysis of air-silica microstructure waveguides

Abstract

A study of fraction of evanescent modal power at the edge and the holes of optical waveguides was presented for the air-silica microstructures. An analysis was also undertaken to determine the advantages of having a single core region or a periodic structure. Results show that for the 4-layer structures the fraction of modal power in regions 2 and 4 was greater in the case of periodic waveguide than the wavelength with the core region.