What is a dielectric waveguide

Dielectric waveguide

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2012 | OriginalPaper | Book chapter

It plays in photonics

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electromagnetic waves in so-called waveguides play a central role. The great success of optical communications technology would be inconceivable without the availability of low-loss optical waveguides. In contrast to conventional high-frequency technology, where waveguides are generally If metallic waveguides are used, dielectric waveguides are used practically exclusively in the optical wavelength range. The tendency of bundled waves to expand spatially as they propagate is countered by a lateral variation of the refractive index in the medium, the effect of which, depending on the refractive index course, can be understood as wave guidance through total reflection or as compensation of the expansion through a distributed lens effect of the medium.

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About this chapter
title
Dielectric waveguide
book
Photonics

Print ISBN: 978-3-7091-1520-6

Electronic ISBN: 978-3-7091-1521-3

Copyright Year: 2012

https://doi.org/10.1007/978-3-7091-1521-3

DOI
https://doi.org/10.1007/978-3-7091-1521-3_5