Patents by Inventor Robert Biard

Robert Biard 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).

  • VCSEL mode-transforming phase filter with enhanced performance
    Patent number: 7061945
    Abstract: A vertical cavity surface emitting laser (VCSEL) in which a higher order lasing mode produces a Gaussian-like single mode far field beam intensity pattern. Such a VCSEL includes a protective surface deposition on a VCSEL structure, and phase filter elements on the surface deposition. The surface deposition and the phase filter elements implement an optical phase filter that induces optical path difference such that a single mode far field beam intensity pattern results when the VCSEL operates in a higher order lasing mode. The VCSEL can include structures that enhance a selected higher-order operating mode and/or that suppress unwanted operating modes.
    Type: Grant
    Filed: May 13, 2003
    Date of Patent: June 13, 2006
    Assignee: Finisar Corporation
    Inventors: James A. Cox, Ralph H. Johnson, James K. Guenter, Robert Biard, Klein Johnson
  • VCSEL mode-transforming phase filter with enhanced performance
    Publication number: 20040228379
    Abstract: A vertical cavity surface emitting laser (VCSEL) in which a higher order lasing mode produces a Gaussian-like single mode far field beam intensity pattern. Such a VCSEL includes a protective surface deposition on a VCSEL structure, and phase filter elements on the surface deposition. The surface deposition and the phase filter elements implement an optical phase filter that induces optical path difference such that a single mode far field beam intensity pattern results when the VCSEL operates in a higher order lasing mode. The VCSEL can include structures that enhance a selected higher-order operating mode and/or that suppress unwanted operating modes.
    Type: Application
    Filed: May 13, 2003
    Publication date: November 18, 2004
    Inventors: James A. Cox, Ralph H. Johnson, James K. Guenter, Robert Biard, Klein Johnson