Patents by Inventor Michael Geiselmann

Michael Geiselmann 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: 12153291
    Abstract: An electro-optic modulator for a waveguide is presented. The electro-optic modulator includes a first semiconductor layer, a second semiconductor layer, a dielectric layer interposed between the second semiconductor layer and the first semiconductor layer and a coupling layer for coupling a guided mode of the waveguide to at least one of the first semiconductor layer and the second semiconductor layer. The electro-optic modulator is configured to induce a modulation on the guided mode of the waveguide by changing a refractive index in response to a voltage applied between the first semiconductor layer and the second semiconductor layer.
    Type: Grant
    Filed: September 2, 2020
    Date of Patent: November 26, 2024
    Assignee: LiGenTec, SA
    Inventors: Davide Sacchetto, Michael Zervas, Michael Geiselmann
  • Patent number: 12055757
    Abstract: An optical mode-size converter is presented, which includes a guiding portion, a first strip with a first refractive index, and a second strip with a second refractive index. The first refractive index and the second refractive index are higher than a refractive index of the guiding portion, and a section of the first strip and a section of the second strip overlap to form an evanescent coupling region. The optical mode-size converter further comprises a coupling layer disposed between the first strip and the second strip within the evanescent coupling region, wherein the refractive index of the coupling layer is larger than the refractive index of the guiding portion and smaller than the first refractive index and the second refractive index.
    Type: Grant
    Filed: March 13, 2020
    Date of Patent: August 6, 2024
    Assignee: LiGenTec, SA
    Inventors: Michael Geiselmann, Michael Zervas, Davide Sacchetto, Anton Stroganov
  • Publication number: 20220334449
    Abstract: An electro-optic modulator for a waveguide is presented. The electro-optic modulator includes a first semiconductor layer, a second semiconductor layer, a dielectric layer interposed between the second semiconductor layer and the first semiconductor layer and a coupling layer for coupling a guided mode of the waveguide to at least one of the first semiconductor layer and the second semiconductor layer. The electro-optic modulator is configured to induce a modulation on the guided mode of the waveguide by changing a refractive index in response to a voltage applied between the first semiconductor layer and the second semiconductor layer.
    Type: Application
    Filed: September 2, 2020
    Publication date: October 20, 2022
    Applicant: LiGenTec SA
    Inventors: Davide Sacchetto, Michael Zervas, Michael Geiselmann
  • Publication number: 20220155522
    Abstract: An optical mode-size converter is presented, which includes a guiding portion, wherein at least a portion of the guiding portion extends between a first end and a second end along a first path, a first strip with a first refractive index, and a second strip with a second refractive index. The first strip and the second strip are embedded within the guiding portion extending along the first path such that a first optical mode received at the first end reaches the first strip before the second strip and such that the second strip extends to the second end. The first refractive index and the second refractive index are higher than a refractive index of the guiding portion, and a section of the first strip and a section of the second strip overlap to form an evanescent coupling region, such that converter is responsive to a first optical mode received at the first end to convert the first optical mode into a second optical mode with a smaller mode size along the first path towards the second end.
    Type: Application
    Filed: March 13, 2020
    Publication date: May 19, 2022
    Applicant: LiGenTec SA
    Inventors: Michael Geiselmann, Michael Zervas, Davide Sacchetto, Anton Stroganov