In this paper, we reformulate the quasi-static spectral domain analysis (SDA) applicable to a lossy anisotropic multilayer asymmetric coplanar waveguide (ACPW). The SDA formulation also incorporates two-layer model of a conductor thickness and the concept of effective permeability to account for the low frequency dispersion due to the magnetic field penetration in an imperfect conductor. The pa...

Abstract In this paper, a sub-wavelength metal-insulator-metal (MIM) waveguide structure is proposed by using cross-shape rectangular cavity, of which wings are coupled with two cavities. Firstly, cavity placed between the input and output MIM waveguides. According to mutual interference bright dark modes, three Fano resonant peaks generated. Secondly, adding on left wing cross shaped one, five...

In this work, we study a series of tunable flux qubits inductively coupled to coplanar waveguide resonator fabricated on sapphire substrate. Each qubit includes an asymmetric superconducting quantum interference device which is controlled by the application external magnetic field and acts as Josephson junction. The tunability typically $\pm 3.5$ GHz around their central gap frequency. measured...

Abstract The new paradigm of parity-time symmetry in quantum mechanics has readily been applied the field optics with numerous demonstrations exotic properties photonic systems. In this work, we report on implementation single frequency electrically injected distributed feedback (DFB) laser diodes based symmetric dual gratings a standard ridge waveguide configuration. We demonstrate enhanced mo...

in this article, the effect of cells' radius on the behavior of wavelength switching optical filter andthe effect of the radius of the optical filters' key characteristics such as wavelength resonance onan optical filter based on photonic crystals, have been investigated. currently, the most commonapplied mechanism for designing optical filter based on photonic crystals is using twome...

In this work, we propose an approach for the design of a waveguide structure that allows efficient and highly asymmetric coupling quantum sources with circularly polarized transition dipole moments to guided mode structure. The is based on mixing two quasi-degenerate modes periodic auxiliary single-mode leading formation dispersion stationary inflection point consequently high efficiency source...

In the present work, we consider existence and spectral stability of standing wave solutions to a model for light propagation in twisted multi-core fiber with no gain or loss energy. Numerical parameter continuation experiments demonstrate sufficiently small values coupling parameter. Furthermore, waves exhibiting optical Aharonov-Bohm suppression, where there is single waveguide which remains ...

rectangular waveguide (wr) is one of the earliest types of transmission lines. rectangular waveguide can be produced by hot extrusion process. in this paper, the hot extrusion process of cuzn5 rectangular waveguide was investigated by finite element method (fem). in addition, genetic algorithm method (ga) was used to optimize the die geometry and process conditions to achieve the lowest magnitu...

The aim of the present study is to determine the feasibility of making a rectangular twist waveguide used to rotate electromagnetic waves. For this purpose, the process of fabricating an aluminum rectangular twist waveguide was simulated by making use of finite element method and Deform software. The optimum length and angle of the twist die for manufacturing a twist waveguide with inner cross ...

in this paper, a photonic crystal waveguide with point defects and lattice constant perturbations of +5%, -5% are being investigated. firstly waveguide structures with constant and specific parameters are being studied and photonic band gap diagrams for te/tm modes are depicted; then pulse propagation in the frequencies available in the band gap are shown. after that, effects of parameters like...