SUB-WAVELENGTH EFFICIENT POLARIZATION FILTER (SWEP FILTER)
A polarization sensitive filter includes a first sub-wavelength resonant grating structure (SWS) for receiving incident light, and a second SWS. The SWS are disposed relative to one another such that incident light which is transmitted by the first SWS passes through the second SWS. The filter has a...
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Zusammenfassung: | A polarization sensitive filter includes a first sub-wavelength resonant grating structure (SWS) for receiving incident light, and a second SWS. The SWS are disposed relative to one another such that incident light which is transmitted by the first SWS passes through the second SWS. The filter has a polarization sensitive resonance, the polarization sensitive resonance substantially reflecting a first polarization component of incident light while substantially transmitting a second polarization component of the incident light, the polarization components being orthogonal to one another. A method for forming polarization filters includes the steps of forming first and second SWS, the first and second SWS disposed relative to one another such that a portion of incident light applied to the first SWS passes through the second SWS. A method for separating polarizations of light, includes the steps of providing a filter formed from a first and second SWS, shining incident light having orthogonal polarization components on the first SWS, and substantially reflecting one of the orthogonal polarization components while substantially transmitting the other orthogonal polarization component. A high Q narrowband filter includes a first and second SWS, the first and second SWS are spaced apart a distance being at least one half an optical wavelength.
La présente invention concerne un filtre sensible à la polarisation. Ledit filtre comprend une première structure de réseau de résonance à sous-longueur d'ondes (SWS) permettant de recevoir une lumière incidente, et une seconde SWS. Les SWS sont disposées les unes par rapport aux autres de sorte que la lumière incidente qui est transmise par la première SWS traverse la seconde SWS. Le filtre présente une résonance sensible à la polarisation, la résonance sensible à la polarisation réfléchissant sensiblement un premier composant de polarisation de lumière incidente tout en transmettant sensiblement un second composant de polarisation de la lumière incidente, les composants de polarisation étant orthogonaux les uns par rapport aux autres. L'invention concerne un procédé de formation de filtres de polarisation consistant à former une première et une seconde SWS, la première et la seconde SWS étant disposées l'une par rapport à l'autre de sorte qu'une partie de la lumière incidente appliquée à la première SWS traverse la seconde SWS. L'invention concerne un procédé de séparation de polarisations de lumière, consistant à util |
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