One of the main steps towards large-scale quantum photonics consists integration single photon sources (SPS) with photonic integrated circuits (PICs). For that purpose, PICs should offer an efficient light coupling and a high preservation indistinguishability photons. Therefore, optimization through waveguide design is especially relevant. In this work we have developed analytical model uses Gr...

Abstract— This work investigates the improvement of the active reflection coefficient of waveguide-fed phased-array antenna using liquid crystal layers. The anisotropy properties of liquid crystal layer can be employed to eliminate blind scan angle and improve the wide angle impedance matching of the waveguide-fed phased array antennas. The authors have expressed the modal analysis of the waveg...

This paper proposed an X-band compact efficient rectangular waveguide TE 10 -circular 01 mode converter and conducted its structure design, theoretical analysis, numerical simulation, experimental research. is composed of a –TE 20 converter. In the design converter, step used to counteract microwave reflection due discontinuity rectangular–circular connection, two choke slots are involved suppr...

A metallic coupler is proposed to interface a silicon on insulator (SOI) waveguide with a narrow hybrid plasmonic waveguide (200× 200 nm). The device operation is investigated and optimized to attain the best tradeoff between the mode confinement and the propagation loss. Calculations reveal that a high confinement and low loss of the energy is achieved from a silicon slab waveguide into the di...

Rectangular waveguide 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 (GA) was used to optimize the die geometry and process conditions to achieve the lowest magnitude of extrus...

A vibrating pylon, modeled as a waveguide, with an attached point mass that is time-varying poses numerically challenging problem regarding the most efficient way for eigenvalue extraction. The reason three-fold, starting heavy attachment modifies original stand-alone plus fact results in Dirac delta function mixed-type boundary conditions, and finally becomes time-dependent must be solved sequ...

Laser diode beam divergence is the main parameter for beam shaping and fiber optic coupling. Increasing the waveguide layer thickness is the conventional method to decrease the beam divergence. In this paper, the broadened asymmetric waveguide is introduced to decrease the divergence without increasing the optical power. The asymmetric waveguide was used to shift the vertical optical field to n...

When interactively modifying or automatically animating the source frequency, the displayed propagating mode is by default the highest order mode. This is very usefull to intuitively understand the order of succession of the cutoo frequencies of the various modes. When taking a very rectangular waveguide { e.g. with a high a=b ratio { (see Fig. 3), it becomes evident, that the cutoo frequencies...