A grating for electromagnetic radiation

Details A grating for electromagnetic radiation A grating for electromagnetic radiation

H - Electricity

01

Q

H01Q 1/42 (2006.01) H01Q 3/44 (2006.01) H01Q 15/00 (2006.01) H01Q 15/14 (2006.01) H01Q 17/00 (2006.01)

Patent

CA 2401509

A grating comprising a plurality of substantially parallel members having a conducting surface of depth L, separated by a dielectric layer gap, and having of pitch .lambda.g and where L > 16.lambda.g. The members are preferably metallic or comprise metallic foil covered plastic. The gap may be filled wholly or partially with dielectric material including liquid crystal whose refractive index can be controlled by suitable application of voltage across the gap.

Cette invention a trait à un réseau comprenant plusieurs éléments quasiment parallèles, possédant une surface conductrice d'une profondeur L, séparés par un espace fait d'une couche diélectrique, et ayant un pas .lambda.¿g?, L>16.lambda.¿g?. Les éléments sont, de préférence, en métal ou sont pourvus d'une matière plastique recouverte d'une feuille métallique. L'espace peut être rempli, entièrement ou partiellement, d'un matériau diélectrique incluant des cristaux liquides dont il est possible de commander l'indice de réfraction par une application adaptée de tension à travers ledit espace.

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