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- W4256121158 abstract "This chapter presents a simplified description of waveguides and modes. It establishes the geometry of a waveguide in one dimension only. That is to say, the waveguide is represented by a planar structure consisting of a high refractive index slab surrounded by slabs of material with a lower refractive index. Single mode optical fibres are, in practice, weakly guiding structures, with an index contrast of 0.005 being typical. In terms of coupling a conventional light source into an optical fibre, this is governed by the étendue of the fibre and the radiance of the source. Focal ratio degradation is a phenomenon in multimode fibre that leads to an apparent increase in the étendue of light propagating through a fibre. Instead of using index contrast in two contiguous and continuous structures, light guidance can be produced by the introduction of periodic structures into an otherwise continuous material." @default.
- W4256121158 created "2022-05-12" @default.
- W4256121158 date "2020-01-03" @default.
- W4256121158 modified "2023-09-24" @default.
- W4256121158 title "Optical Fibres and Waveguides" @default.
- W4256121158 cites W3152304006 @default.
- W4256121158 doi "https://doi.org/10.1002/9781119302773.ch13" @default.
- W4256121158 hasPublicationYear "2020" @default.
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