Patents by Inventor Martin G. Young

Martin G. Young 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).

  • Semiconductor amplifier or laser having integrated lens
    Patent number: 5457569
    Abstract: An optical device includes a semiconductor optical amplifier and a lens for receiving optical energy from the optical amplifier. The lens and the optical amplifier are monolithically integrated on a common substrate. The optical amplifier may be of the type having a tapered active region. Rather than an optical amplifier, a semiconductor laser may be integrated with the lens. The lens may be formed by changing the refractive index of the waveguide core which is formed in the semiconductor material. This refractive index change may be produced by changing the thickness of a portion of the waveguide core layer.
    Type: Grant
    Filed: June 30, 1994
    Date of Patent: October 10, 1995
    Assignee: AT&T IPM Corp.
    Inventors: Kang-Yih Liou, Martin G. Young