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Polarization multiplexing of diffractive elements with metal-stripe grating pixels

: Zeitner, U.D.; Schnabel, B.; Kley, E.-B.; Wyrowski, F.


Applied optics 38 (1999), Nr.11, S.2177-2181
ISSN: 0003-6935
ISSN: 1539-4522
ISSN: 1559-128X
Fraunhofer IOF ()
diffractive optics; Polarization-sensitive devices

Diffractive elements with polarization multiplexing for the visible spectral region are demonstrated. The polarization-multiplexing property of the element is based on the polarization-dependent transmission characteristics of metal-stripe sub-wavelength period gratings. The proper dimensions of these gratings are estimated by rigorous calculations. The principle of polarization multiplexing by use of metal-stripe subwavelength period gratings is described for a diffractive element that has a binary amplitude transmission per polarization channel and is demonstrated by experimental results.