Virtual Photonic Bandgap Structure Array Using TiO_2 Rib Waveguide for Designing Optical Filters

摘要

In this work, we have designed a mono-material based virtual photonic bandgap structure. The effect of two different materials on a single TiO_2 waveguide is made by periodic removal of TiO_2 from the TiO_2 rib structure. This periodic removal of TiO_2 results a rib-ridge waveguide structure. Due to the dissimilarities of rib and ridge structure results two different effective refractive index of TiO_2. The effective refractive index of both the rib and ridge waveguide structure has been measured by FDTD for the centrally blocked wavelength of 1550 nm by Transfer Matrix Method.