Patents by Inventor Andrew R. Cook

Andrew R. Cook 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).

  • Method and apparatus for transmitting information
    Patent number: 5107358
    Abstract: A method and apparatus for transmitting information comprises a signal generator (1) for continuously generating a pair of optical signals (f1, f2). These signals are similarly modulated in a modulator (5) with information to be transmitted and are combined with their polarizations substantially orthogonal. The combined signals are transmitted with the portions of each signal modulated with the same information being transmitted together down an optical fiber.
    Type: Grant
    Filed: November 15, 1990
    Date of Patent: April 21, 1992
    Assignee: British Telecommunications Public Limited Company
    Inventors: Terence G. Hodgkinson, Andrew R. Cook