Patents by Inventor Thomas G. B. Mason

Thomas G. B. Mason 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).

  • Tunable laser source with integrated optical modulator
    Patent number: 7622315
    Abstract: A tunable laser source with integrated optical modulator. The tunable laser source is a widely tunable semiconductor laser that is comprised of an active region on top of a thick, low bandgap, waveguide layer, wherein both the waveguide layer and the active region are fabricated between a p-doped region and an n-doped region. An electro-absorption modulator is integrated into the semiconductor laser, wherein the electro-absorption modulator shares the waveguide layer with the semiconductor laser.
    Type: Grant
    Filed: January 31, 2008
    Date of Patent: November 24, 2009
    Assignee: The Regents of the University of California
    Inventors: Thomas G. B. Mason, Larry A. Coldren, Gregory Fish
  • Optical device having dual microstrip transmission lines with a low-k material and a method of manufacture thereof
    Patent number: 7024057
    Abstract: The present invention provides an optical device. In one embodiment, the optical device includes an optical waveguide formed in or over a ridge located on a substrate. The optical device also includes a microstrip transmission line comprising a signal electrode and a ground electrode adjacent the ridge and a low-k dielectric material separating the signal and ground electrodes. The present invention also provides a method for making the optical device.
    Type: Grant
    Filed: September 16, 2002
    Date of Patent: April 4, 2006
    Assignee: TriQuint Technology Holding Co.
    Inventors: Guoliang Li, Thomas G. B. Mason
  • Optical device having dual microstrip transmission lines with a low-k material and a method of manufacture thereof
    Publication number: 20040052442
    Abstract: The present invention provides an optical device. In one embodiment, the optical device includes an optical waveguide formed in or over a ridge located on a substrate. The optical device also includes a microstrip transmission line comprising a signal electrode and a ground electrode adjacent the ridge and a low-k dielectric material separating the signal and ground electrodes. The present invention also provides a method for making the optical device.
    Type: Application
    Filed: September 16, 2002
    Publication date: March 18, 2004
    Applicant: Agere Systems Inc.
    Inventors: Guoliang Li, Thomas G.B. Mason
  • Photodetector having a waveguide and resonant coupler and a method of manufacture therefor
    Publication number: 20020197016
    Abstract: A photodetector and a method of manufacture therefor. The photodetector includes a waveguide located over a photodetector substrate and a resonant coupler located over and coupled to the waveguide. An index of refraction of the resonant coupler is greater than an index of refraction of the waveguide. The photodetector also includes an absorber located over and coupled to the resonant coupler, wherein the absorber has an index of refraction greater than the index of refraction of the resonant coupler.
    Type: Application
    Filed: June 20, 2001
    Publication date: December 26, 2002
    Inventors: Sethumadhavan Chandrasekhar, Andrew G. Dentai, Barry F. Levine, Thomas G.B. Mason, Ola Sjolund