EXCITATION AND PROPAGATION OF A FAST PULSE GUIDED WAVE IN A CIRCULAR DIELECTRIC WAVEGUIDE
It is shown that a pulse signal in a circular dielectric waveguide is partitioned into slow and fast waves. The fast wave propagatesalong the dielectric surface with the speed of light in free space and creates a precursor field in the dielectric waveguide in theform of cones similar to Cherenkov ra...
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| Date: | 2013 |
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| Main Authors: | , |
| Format: | Article |
| Language: | Russian |
| Published: |
Видавничий дім «Академперіодика»
2013
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| Online Access: | http://rpra-journal.org.ua/index.php/ra/article/view/1130 |
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| Journal Title: | Radio physics and radio astronomy |
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Radio physics and radio astronomy| Summary: | It is shown that a pulse signal in a circular dielectric waveguide is partitioned into slow and fast waves. The fast wave propagatesalong the dielectric surface with the speed of light in free space and creates a precursor field in the dielectric waveguide in theform of cones similar to Cherenkov radiation. These cones are re-reflected at the critical angle between the dielectric interfacescreating a rhombus-shaped wave structure. Long time modeling of this fast wave has been conducted using the Moving FrameBody of Revolution FDTD technique (BOR-FDTD). The revealed peculiarities of the considered wave structure are discussed. |
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