Results 231 to 240 of about 438,669 (294)
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Dielectric waveguide circulator
International Journal of Infrared and Millimeter Waves, 1981The design and development of a Y-junction dielectric waveguide circulator which operates in the 35 GHz frequency region is described. The unit consists of a magnesium titanate dielectric waveguide transmission line utilizing Ni Zn ferrite as the gyromagnetic junction material, all of which is mounted on a low permittivity (e') dielectric substrate.
R. A. Stern, R. W. Babbitt
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Elliptical Dielectric Waveguides
Journal of Applied Physics, 1962The problem of electromagnetic wave propagation along a dielectric cylinder of elliptical cross section is considered. Two infinite determinants representing the characteristic equations for the two types of hybrid waves (the HEmne, and the HEmn0 waves) are derived. It is found that there exists two dominant waves which possess zero cutoff frequencies.
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SPIE Proceedings, 2007
Our recent results on planar and channel waveguide fabrication and lasers in the dielectric oxide materials Ti:sapphire and rare-earth-ion-doped potassium yttrium double tungstate (KYW) are reviewed. We have employed waveguide fabrication methods such as liquid phase epitaxy and reactive ion etching as well as ion beam implantation and femtosecond ...
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Our recent results on planar and channel waveguide fabrication and lasers in the dielectric oxide materials Ti:sapphire and rare-earth-ion-doped potassium yttrium double tungstate (KYW) are reviewed. We have employed waveguide fabrication methods such as liquid phase epitaxy and reactive ion etching as well as ion beam implantation and femtosecond ...
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Dielectric Waveguides and Waveguide Devices for Microwave Applications
4th European Microwave Conference, 1974, 1974A survey on the state of the art in Dielectric Waveguide (DW), stressing in particular the practical microwave applications, is given. The principles for designing DWs, fixing and joining devices, launchers, various multiport networks etc. are founded. A simple theory to calculate parameters of multiport networks with distributed coupling is developped.
V. F. VZYATYSHEV +3 more
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An All-Dielectric Coaxial Waveguide
Science, 2000An all-dielectric coaxial waveguide that can overcome problems of polarization rotation and pulse broadening in the transmission of optical light is presented here. It consists of a coaxial waveguiding region with a low index of refraction, bounded by two cylindrical, dielectric, multilayer, omnidirectional reflecting mirrors.
, Ibanescu +4 more
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Dispersion Minimization in Dielectric Waveguides
Applied Optics, 1973The effect of dielectric dispersion on pulse transmission through singly clad, cylindrical fibers is formulated in terms of the effective group index for the waveguide. It is shown that two different solutions are possible for designing guides that give a minimum of distortion due to dispersion. One solution uses fibers with low numerical aperture made
L, Smith, E, Snitzer
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A Novel Wavemeter For Dielectric Waveguide
27th European Microwave Conference and Exhibition, 1997This paper presents a novel wavemeter for use with dielectric waveguide. A movable piece of dielectric is placed parallel to a dielectric guide of identical cross section, forming a coupled structure. This causes varying amounts of energy to radiate from the far end of the movable dielectric.
P. R. Young, R. J. Collier
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Waveguides: characteristic modes of hollow rectangular dielectric waveguides
Applied Optics, 1976The field configurations and propagation constants of the normal modes of a hollow rectangular dielectric waveguide have been determined. In addition, the coupling coefficients of a Gaussian free-space mode into the normal modes of a square guide were calculated.
K D, Laakmann, W H, Steier
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1987
In the preceding portions of this book, it has usually been assumed that the medium in which the phenomena take place is either free space or a material in which the energy losses can be neglected. It is now desired to investigate more closely what happens when the energy losses must be taken into account as well as to indicate the mechanism of these ...
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In the preceding portions of this book, it has usually been assumed that the medium in which the phenomena take place is either free space or a material in which the energy losses can be neglected. It is now desired to investigate more closely what happens when the energy losses must be taken into account as well as to indicate the mechanism of these ...
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