Patents Assigned to Optelcom, Inc.
  • Optical communication system for drill hole logging
    Patent number: 4547774
    Abstract: An optical communication system for drill hole logging comprises an armored cable containing one or more glass clad optical fibers inside a tubular moisture barrier, a neodymium laser in the cable reel radiates infrared light into one of the fibers, a modulator in the downhole cable-head connector shell modulates light and returns it to the surface, and a semiconductor detector in the reel demodulates the data signal from the returning light.
    Type: Grant
    Filed: September 13, 1984
    Date of Patent: October 15, 1985
    Assignee: Optelcom, Inc.
    Inventor: Gordon Gould