Patents by Inventor Fabian Lutolf

Fabian Lutolf has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9557458
    Abstract: The invention relates to a grating coupler comprising: —an optical substrate arranged to transfer a light beam, and —a diffraction grating arranged on, or imbedded in, the surface of said optical substrate, said diffraction grating comprising diffraction grating elements comprising each a coating arranged asymmetrically on said diffraction grating elements. The grating coupler is further arranged to satisfy the condition: (n1×sin(I?I)+?2)/?×P>1, wherein n1 is the refractive index of the optical medium to the incident light side of the diffraction grating elements, n2 is the refractive index of the optical medium to the diffracted light side of the diffraction grating elements, lal the absolute value of the incident angle of the light beam incident on the grating coupler ? is the vacuum wavelength of the diffracted light, and P is the period of the diffraction grating elements.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: January 31, 2017
    Assignee: CSEM Centre Suisse d'Electronique et de Microtechnique SA—Recherche et Développement
    Inventors: Fabian Lutolf, Martin Stalder, Guillaume Basset
  • Publication number: 20160274281
    Abstract: The invention relates to a grating coupler comprising: —an optical substrate arranged to transfer a light beam, and—a diffraction grating arranged on, or imbedded in, the surface of said optical substrate, said diffraction grating comprising diffraction grating elements comprising each a coating arranged asymmetrically on said diffraction grating elements. The grating coupler is further arranged to satisfy the condition: (n1×sin(I?I)+?2)/?×P>1, wherein n1 is the refractive index of the optical medium to the incident light side of the diffraction grating elements, n2 is the refractive index of the optical medium to the diffracted light side of the diffraction grating elements, lal the absolute value of the incident angle of the light beam incident on the grating coupler ? is the vacuum wavelength of the diffracted light, and P is the period of the diffraction grating elements.
    Type: Application
    Filed: October 29, 2013
    Publication date: September 22, 2016
    Applicant: CSEM CENTRE SUISSE D'ELECTRONIQUE ET DE MICROTECHN IQUE SA - RECHERCHE ET DEVELOPEMENT
    Inventors: Fabian Lutolf, Martin Stalder, Guillaume Basset