Patents Represented by Attorney Barlow, Josephs & Holems, Ltd.
  • Patent number: 6898215
    Abstract: Selectively oxidized vertical cavity lasers emitting at about 1290 nm using InGaAsN quantum wells that operate continuous wave below, at and above room temperature are reported. The lasers employ a semi-insulating GaAs substrate for reduced capacitance, high quality, low resistivity AlGaAs DBR mirror structures, and a strained active region based on InGaAsN. In addition, the design of the VCSEL reduces free carrier absorption of 1.3 ?m light in the p-type materials by placing relatively higher p-type dopant concentrations near standing wave nulls.
    Type: Grant
    Filed: April 11, 2002
    Date of Patent: May 24, 2005
    Assignee: Optical Communication Products, Inc.
    Inventors: Ryan Likeke Naone, Andrew W. Jackson, Leo M. F. Chirovsky