element method (2D-FEM) in the frequency domain is presented. This method has
significantly lower computational cost when compared with 3-D methods that have been
used to model PSWs, and can also model back reflected signals. Unlike photonic crystal
waveguides, light confinement in a PSW is due to total internal reflection as in a continuous
waveguide (CWG). We show that the dispersion relation of the guided modes in PSW is …