Patents by Inventor Anthony C. Boucouvalas

Anthony C. Boucouvalas 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).

  • Fibre optic coupler
    Patent number: 4786130
    Abstract: A fibre-optic coupler has the claddings of two or more optical fibres partially fused together over a coupling region, and a body of light-transmissive material, having a variable refractive index, contacts the claddings at the coupling region, such that by varying the refractive index of said body light transmitted along one fibre is split between the fibres in a varying ratio.
    Type: Grant
    Filed: May 19, 1986
    Date of Patent: November 22, 1988
    Assignee: The General Electric Company, p.l.c.
    Inventors: George A. Georgiou, Anthony C. Boucouvalas
  • Tunable optical directional couplers
    Patent number: 4737002
    Abstract: Optical couplers, whether in integrated or fibre optics, where there is at least one input lightpath coupled to two or more output lightpaths by depositing a film of resistive metal over the coupling region and passing current through the film. This heats up the coupler and thus increases the refractive index forming a preferential light path through the heat region. Thus by heating particular regions, and by varying current through the film, the coupler is tuned as desired.
    Type: Grant
    Filed: September 2, 1987
    Date of Patent: April 12, 1988
    Assignee: The General Electric Company, p.l.c.
    Inventor: Anthony C. Boucouvalas
  • Interferometers
    Patent number: 4725141
    Abstract: A Mach Zehnder interferometer with arms of equal length is formed between two optic fibres. This is achieved by locating the lightly tensioned fibres in a generally parallel configuration and forming optical couplings between them at points which lie on the center-line of the configuration. Preferably the couplings are formed by a fused biconical tapering technique.
    Type: Grant
    Filed: August 1, 1985
    Date of Patent: February 16, 1988
    Assignee: The General Electric Company, p.l.c.
    Inventors: George A. Georgiou, Anthony C. Boucouvalas