Existence of a surface wave along the boundary between the semi-infinite materials, one of which is a free-space and the other is a material with either negative permeability or negative permittivity, is theoretically investigated. Surface waves exist in only limited combination of negative and positive signs of the material parameters. In addition, by analyzing the surface wave in a finite-thi...

In this research paper, we design and simulate Silicon Oxycarbide (SiOC) channel waveguides photonic passive device such as directional coupler. SiOC are designed for different values of width height at shorter wavelength band that is 1310 nm window with refractive index (ncore) =2.2 μm SiO2 (nclad) = 1.444 μm. TE TM fundamental mode achieved 1.5 microns 0.5 to understand the single operation w...

We present a device design and fabrication of a novel hollow-waveguide optical switch consisting of a directional coupler with variable air cores. The numerical simulation and experimental characterization of the proposed optical switch performance is discussed. Switching operation is achieved by mode-field change and coupling beat length in the directional coupler section, as the air core thic...

A universally accepted figure of merit for analog microwave transmission links is the spur-free dynamic range (SFDR), which is the ratio (usually expressed in dB) of the largest to smallest signal a link can transmit and receive without introducing any measurable distortion. This paper presents the result of a study of broadband, microwave fiber optic links that contain high-linearity integrate...

We theoretically investigate a non-reciprocal magneto-optical integrated slab directional coupler. The scattering parameters of the structure are derived in frame Coupled-Mode Theory (CMT). By properly designing coupler, it is possible to achieve perfect non-reciprocity (with 100% contrast) between two directions propagation. Other operating points can also be defined, especially since modal di...

We demonstrate that a nonlinear directional coupler with special bending of waveguide axes can be used for all-optical switching of polychromatic light with a very broad spectrum covering all of the visible region. The bandwidth of the suggested device is enhanced five times compared with conventional couplers. Our results suggest novel opportunities for the creation of all-optical logical gate...

Spin waves, and their quanta magnons, are prospective data carriers in future signal processing systems because Gilbert damping associated with the spin-wave propagation can be made substantially lower than the Joule heat losses in electronic devices. Although individual spin-wave signal processing devices have been successfully developed, the challenging contemporary problem is the formation o...

A highly sensitive refractive index sensor based on grating-assisted strip waveguide directional coupler is proposed. The sensor is designed using two coupled asymmetric strip waveguides with a top-loaded grating structure in one of the waveguides. Maximum light couples from one waveguide to the other at the resonance wavelength, and the change in resonance wavelength with the change in refract...