waveguide bend
A 60° photonic crystal waveguide bend with improved transmission characteristics.
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In this paper, a 60 waveguide bend is designed in a two-dimensional (2D) photonic crystal (PC) slab to provide high transmission over a large bandwidth. We apply geometrical modification in the bend region to improve the transmission characteristics. This modification
Design of a 90-degrees over moded waveguide bend
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A design for a 90 bend for the TEsr mode in overmoded circular waveguide is presented. A pair of septa, symmetrically placed perpendicular to the plane of the bend , are adiabatically introduced into the waveguide before the bend and removed after it. Introduction of the
Impedance of an Azimuthal TEM Waveguide Bend in a Graded Dielectric Medium
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A continuously graded dielectric material may be used to compensate a coaxial transmission line bend in order to allow it to support a TEM mode. The characteristic impedance of such a bend is a critical design parameter. Here we derive an expression
Ultrasmall arrowhead arrayed- waveguide grating with V-shaped bend waveguides
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The ultrasmall arrowhead arrayed- waveguide grating (AWG) with integrated waveguide mirrors has been proposed. The v-shaped bend waveguides, using integrated waveguide elliptic mirrors, were applied to the arrayed waveguide to reduce the AWG size. The small
Experimental realization of high transmittance THz 90.- bend waveguide using EMXT structure
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We present a high efficiency terahertz (THz) 90- bend electromagnetic crystal (EMXT) waveguide using Si-based microelectromechanical systems (MEMS) technology. The twodimensional EMXT consists of a periodical array of squareshaped gold rods (13 13
High-Transmission-Efficiency 120Photonic Crystal Waveguide Bend by Using Flexible Structural Defects
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We numerically studied a high-output-transmission-efficiency low-reflection-loss 120 photonic crystal (PhC) waveguide bend based on a PhC slab with triangular-lattice air holes. The desired high output transmission efficiency was achieved by introducing flexible In antenna and measuremeat techniques and microwave communications engineering, we frequently ellcounter a need for efficient exciters of higher modes of rectangular waveguides. There are a number of devices that effect H10–Hm0 conversion; . Frequently
Design Z- bend Photonic Crystal Waveguide by FDTD Method
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In this paper, Z- bend photonic crystal waveguide simulated using the Finite Difference Time Domain (FDTD). To increase the transition in the structure frequency width for incident wave, by creating defects in the basic structure, various structures of the waveguide Z form are This letter presents a study of bend discontinuities in the substrate integrated gap waveguide (SIGW), and proposes a simple solution to minimize the discontinuity effects. Both curved and chamfered right-angle bends are studied. It is found that with a proper ratio
MODELING A SMOOTH WALL CIRCULAR WAVEGUIDE MITER BEND USING WAVEGUIDE GAP THEORY
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This paper presents the analysis, design, and modeling of smooth wall miter- bend for a circular waveguide operating at 70 GHz. The approximate method theory is used for determining and numerically analyzing various losses in miter bend . It focuses on the
1 2 Low Loss Photonic Crystal Power Splitter Design based on the Integration of Y-junction and Waveguide Bend Using Microfluidic Infiltration
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An improved 1 2 low-loss power splitter with Y-junction in a two dimensional photonic crystal involving triangular lattice of air holes in a silicon substrate exhibiting average transmission more than 47% for each output branch is designed. The power of each output
WAVEGUIDE BEND FILTER APPLICATION OF 2-D PHOTONIC CRYSTAL
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Photonic crystals (PCs) are flexible and competent tools that control the propagation of light in optical media by allowing light to propagate over a desired range of frequencies. Novel concepts have been proposed, and various new applications of PC have been
BROAD COMPARISON BETWEEN AU NANOSPHERES, NANORODS AND NANORINGS AS AN S- BEND PLASMON WAVEGUIDE AT OPTICAL C-BAND
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The integration of optical devices demands the fabrication of waveguides for electromagnetic energy below the diffraction limit of light. In this work, we have investigated the possibility of utilizing specific chains of closely spaced noble metal nanoparticles for
Waveguide mitre Bend for the 28GHz transmission line for ECRH on TJ-K
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At the stellarator TJ-K, a 28 GHz Electron Cyclotron Resonance Heating (ECRH) system will be installed. The oversized transmission line from the gyrotron with TE02 mode output to the stellarator consists of mode converters and a circular polarizer in order to generate a HE11 Interconnection apparatus providing a right angle H-plane bend in grounded coplanar waveguide (GCPW) transmission line media. Respective first and second GCPW lines include a dielectric substrate, on which is formed on a bottom surface a bottom conductive A 3-dimensional S bend silicon waveguide optical interconnect on Silicon on Insulator (SOI) is proposed to connect optical circuits in a multilayered photonic integrated circuit (PIC). Critical parameters like bending loss, axial shift and coupling loss are calculated for efficient
Design and Simulation of 1×2 Y-branch optical power splitter with s- bend waveguide and study on the Variation of Transmitted power with Variation of
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This paper aims to investigate the device based on symmetric Y-branch comprising of S- bend waveguide . Initially, a symmetric Y-junction based 1 2 optical power splitter is designed, which can deliver the best result in simulated performance. The design is The problem of the eigenvalues and eigenfunctions of the quasi-H0rmode in the bend of a cross-shaped waveguide is considered. The field components and the change in the propagation constant due to the bend are obtained. The field distortion is found as a function (NMDW), we propose a method to achieve two-dimensional (2D) bends as sharp as 90º and 120º. Numerical simulations reveal great transmission improvements induced by NMDW over wide frequency ranges in microwave regime. For 90º and 120º bends, the transmission
Low loss Design of SOI 1×2 Y-branch optical power splitter with s- bend waveguide and study on the Variation of Transmitted power with various Waveguide
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A simple technology compatible design of silicon-on-insulator based 1 2 optical power splitter is proposed. For developing large area Opto-electronic Silicon-on-insulator (SOI) devices, the power splitter is a key passive device. The SOI rib- waveguide dimensions