Patents by Inventor Kiuchi D. Chik

Kiuchi D. Chik 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).

  • Methods for simultaneous suppression of laser pulsations and continuous monitoring of output power
    Patent number: 4297651
    Abstract: Semiconductor lasers exhibit transient relaxation oscillations on start-up and specific lasers often exhibit sustained spontaneous pulsations caused probably by crystalline defects. These fluctuations are suppressed by coupling laser emission into a 0.3 to 2 cm. length of waveguide and coupling light reflected from the end of the waveguide back into the laser. Embodiments disclosed include one utilizing a length of optical fibre, while others are integrated optical structures.
    Type: Grant
    Filed: August 23, 1979
    Date of Patent: October 27, 1981
    Assignee: Northern Telecom Limited
    Inventors: John C. Dyment, Kiuchi D. Chik