EXCITATION AND PROPAGATION OF A FAST PULSE GUIDED WAVE IN A CIRCULAR DIELECTRIC WAVEGUIDE
Abstract
It is shown that a pulse signal in a circular dielectric waveguide is partitioned into slow and fast waves. The fast wave propagates
along the dielectric surface with the speed of light in free space and creates a precursor field in the dielectric waveguide in the
form of cones similar to Cherenkov radiation. These cones are re-reflected at the critical angle between the dielectric interfaces
creating a rhombus-shaped wave structure. Long time modeling of this fast wave has been conducted using the Moving Frame
Body of Revolution FDTD technique (BOR-FDTD). The revealed peculiarities of the considered wave structure are discussed.
along the dielectric surface with the speed of light in free space and creates a precursor field in the dielectric waveguide in the
form of cones similar to Cherenkov radiation. These cones are re-reflected at the critical angle between the dielectric interfaces
creating a rhombus-shaped wave structure. Long time modeling of this fast wave has been conducted using the Moving Frame
Body of Revolution FDTD technique (BOR-FDTD). The revealed peculiarities of the considered wave structure are discussed.
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