نتایج جستجو برای: planar waveguide

تعداد نتایج: 80376  

2005
Makoto Ando Jiro Hirokawa

The authors have developed high-efficiency and mass-producible planar slot array antennas using unique singlelayer waveguide structures. Four types of planar waveguides, all belonging to single-layer waveguide, are structurally quite simple and low cost while they inherit low loss characteristics from waveguides. They are leading candidates for high-gain planar antennas in high frequency wirele...

2000
Rolando Magnanini Fadil Santosa

We consider the problem of scattering in a planar optical waveguide. An incident wave, in the form of a guided mode, is sent along the wave-guide. It encounters an inhomogeneity in the core region of the waveguide, and is scattered. We use the Green's function for the planar waveguide to derive a Lippman-Schwinger equation. We show that the integral equation admits a unique solution. The scatte...

Journal: :Optics express 2011
Western Bolaños Joan J Carvajal Xavier Mateos Eugenio Cantelar Ginés Lifante Uwe Griebner Valentin Petrov Vladimir L Panyutin Ganapathy S Murugan James S Wilkinson Magdalena Aguiló Francesc Díaz

High-quality monoclinic planar waveguide crystals of Tm-doped KY(WO4)2 codoped with Gd3+ and Lu3+ were grown by liquid-phase epitaxy. For the first time, planar waveguide lasing was demonstrated in a monolithic cavity in the 2 µm spectral range. The laser was operated in the Q-switched mode using a Cr2+:ZnSe crystal as saturable absorber and in the continuous-wave regimes. The Q-switched planar...

2015
Sanjeev Kumar Raghuwanshi B. M. Azizur Rahman

We characterize the alpha power and chirped types of refractive index profile planar slab waveguide in terms of TE/TM mode study, waveguide dispersion study, mode profile properties, power confinement factor and universal b-V graph. Our own developed finite element method has been efficiently applied to analyze the symmetric planar slab waveguide having a complicated refractive index profile. T...

F. Hojjat Kashani, Salimnejad,

The development of numerical techniques now permits us to analyze complex structures such as dielectric resonator filters and planar passive elements for coplanar monolithic microwave integrated circuits. In this paper, we describe a novel method for designing dielectric resonator filters. Then a Chebychev band pass filter is designed by coaxially placing high-Q TM01Q dielectric resonators ...

Journal: :Journal of Lightwave Technology 2005

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه 1389

چکیده ندارد.

Journal: :Journal of the Optical Society of Korea 2004

1999
J. B. D. Soole H. P. LeBlanc N. C. Andreadakis C. Caneau

We report a novel coupling geometry for integrated waveguide photodetectors-a hybrid vertical coupling/butt coupling scheme that allows the integration of fast, efficient, photodetectors with conventional double heterostructure waveguides. It can be employed to yield a planar, or pseudo-planar, surface that supports further levels of integration. The approach is demonstrated with a 25pm-long p-...

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