Patents by Inventor Colin Brian Rogers

Colin Brian Rogers 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 of manufacturing planar lightwave circuits
    Patent number: 6083843
    Abstract: The present invention is an improved method of pigtailing of high-density Wavelength Division Multiplex (WDM) components, achieved by etching silicon V-grooves for locating the fibres after completion of the PLC device fabrication processes. This avoids the need for etching or pre-patterning of the V-grooves on substrates before device fabrication, and hence avoids any of the waveguide to fibre alignment problems that have been found in the methods of the prior art.
    Type: Grant
    Filed: December 16, 1997
    Date of Patent: July 4, 2000
    Assignee: Northern Telecom Limited
    Inventors: Sureshchandra Mishrilal Ohja, David John Moule, Colin Brian Rogers