13.2. Theoretical Background
Before presenting any details of optical MEMS structures or their modeling methods, we shall first summarize the fundamentals of the related optical theory. By dropping off one approximation after another we proceed from simple ray optical principles towards full-vectorial fields and quantum optics. To simplify the discussion we assume that the absorption of the propagation medium is negligible, unless otherwise stated.
13.2.1. Geometrical Optics
The simplest model for representing light propagation is called geometrical optics. It describes light as rectilinear rays and is therefore also known as ray optics. Light propagates along the rays with a velocity of c/n, where c is the velocity of light in vacuum (sometimes ...
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