A formulation of the scattering-matrix method for calculating localized modes at any type of planar defect has been given by Achar and Barsch' and applied to the problem of determining the surface modes of a semi-infinite NaCl crystal. Here we will consider only the application of this formulation when the defect is a surface. Similar criticisms hold for other types of defects. Achar and Barsch...

We consider the interaction and stability of gap solitons in a one-dimensional, resonant, photonic crystal with a defect state produced by a linear localized mode, or by an incoherent pump. Soliton propagation is investigated using both an analytical treatment and the direct numerical integration of the two-wave Maxwell-Bloch equations. Our results demonstrate that the soliton can be trapped, r...

The familial association of pulmonary stenosis, atrial septal defect, and unique electrocardiographic abnormalities involving a mother and two children is reported. Familial pulmonary stenosis not occurring as part of a named syndrome or without associated multiple congenital abnormalities is rare. The constellation of pulmonary stenosis, atrial septal defect, and the particular electrocardiogr...

We have studied spectral properties of a cholesteric liquid crystal with a combined defect consisting of a nanocomposite layer and a twist. The nanocomposite layer is made of metallic nanoballs dispersed in a transparent matrix and featuring effective resonant permittivity. A solution has been found for the transmission spectrum of circularly polarized waves in the structure. We have analyzed s...

Introduction: The operation of a laser in a stable single fundamental mode is important for a variety of applications, such as short and midrange optical networks (high quality local area networks and storage area networks). For these purposes, vertical cavity surface-emitting lasers (VCSELs) show more promise in many cases over distributed feedback (DFB) lasers for a variety of reasons: easy a...