نتایج جستجو برای: planar waveguide
تعداد نتایج: 80376 فیلتر نتایج به سال:
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...
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...
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...
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...
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 ...
چکیده ندارد.
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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