Patents Assigned to Centre Suisse d'Electronique et de Microtechnique SA—Recherche et Developpement
  • Zero-order diffractive filter
    Patent number: 7821691
    Abstract: A Zero-order diffractive filter comprising a first layer (1) with a periodic diffractive microstructure, forming a waveguide, and at least one adjacent second layer (2, 4, 5), wherein said first layer (1) has a refractive index that is higher than the refractive index of said second layer (2, 4, 5) by at least 0.2. At least one of said second layers (2, 4, 5) is a porous layer comprising nanopores. The period ? of the diffractive microstructure is between 100 nm and 3000 nm.
    Type: Grant
    Filed: July 24, 2007
    Date of Patent: October 26, 2010
    Assignee: CSEM Centre Suisse d'Electronique et de Microtechnique SA—Recherche et Développement
    Inventors: Harald Walter, Gilbert Gugler, Alexander Stuck, Robert Beer, Marc Pauchard