Patents Examined by Georgie Y. Epps
  • Hybrid laser for optical communications, and transmitter, system, and method
    Patent number: 4914667
    Abstract: In the interest of ease of manufacture, hybrid lasers of distributed-Bragg-reflector type are preferred for use as light sources in optical communications. Such lasers are made to operate away from mode instabilities by adjusting a laser parameter such as, e.g., laser temperature, thereby assuring highly error-free transmission. Alternatively, by suitable design of the Bragg reflector it is possible to render mode instability of negligible influence on error rate.
    Type: Grant
    Filed: May 30, 1989
    Date of Patent: April 3, 1990
    Assignee: American Telephone and Telegraph Company, AT&T Bell Laboratories
    Inventors: Greg E. Blonder, Charles H. Henry, Rudolf F. Kazarinov, Nils A. Olsson, Kenneth J. Orlowsky