Patents Represented by Attorney, Agent or Law Firm Gregg J. Rosenblatt
  • Method and apparatus for generating frequency modulated pulses
    Patent number: 6834134
    Abstract: A method and apparatus are provided for generating short (e.g., picosecond) pulses using a 2 section 1553 nm DBR laser without gain switching nor external modulation. The center wavelength of the DBR section is modulated at 0.5 GHz to generate a constant amplitude frequency modulated optical wave Large group velocity dispersion is then applied with a chirped fiber Bragg grating to convert the FM signal to a pulse stream.
    Type: Grant
    Filed: March 23, 2001
    Date of Patent: December 21, 2004
    Assignee: 3M Innovative Properties Company
    Inventors: James F. Brennan, III, Patrick C. Chou, Harry L. T. Lee, Rajeev J. Ram, Hermann A. Haus, Erich P. Ippen