Practical realization of reflective metallic coatings for planar-integrated free-space optics (PIFSO)
نویسنده
چکیده
In planar-integrated free-space optics (PIFSO) [1] the systems approach of which is shown schematically in Abb.1 signals may have to bounce up and down a considerable number of times inside a planar transparent substrate to reach their destinations. To obtain a high coupling efficiency it is therefore mandatory to cover the optical elements with a high-reflectance coating. Thin metal films are often used and prefered to dielectric mirrors because they can be deposited much easier and at lower cost by means of physical vapor deposition.
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