Patents by Inventor Apalavanapillai Nirmalathas

Apalavanapillai Nirmalathas 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).

  • Optical modulator
    Patent number: 7016554
    Abstract: The present invention provides an optical modulator for modulating an optical carrier by an electrical signal. The modulator comprises a first and a second waveguide for guiding the optical carrier, each waveguide is formed from, or being juxtaposed with respect to, an electro-optic material. The modulator also comprises a series of cavities associated with the first waveguide and the second waveguide and means for applying the electrical signal having a predetermined bandwidth to the cavities. The cavities have a resonant frequency within the predetermined bandwidth. The present invention also provides a device for optical single sideband with carrier (OSSB+C) transmission. The device has parallel-coupled cavities.
    Type: Grant
    Filed: September 11, 2002
    Date of Patent: March 21, 2006
    Assignees: RMIT University, The University of Melbourne
    Inventors: Arnan Mitchell, Rodney B. Waterhouse, Apalavanapillai Nirmalathas, Dalma Novak
  • Optical Modulator
    Publication number: 20050063035
    Abstract: The present invention provides an optical modulator for modulating an optical carrier by an electrical signal. The modulator comprises a first and a second waveguide for guiding the optical carrier, each waveguide is formed from, or being juxtaposed with respect to, an electro-optic material. The modulator also comprises a series of cavities associated with the first waveguide and the second waveguide and means for applying the electrical signal having a predetermined bandwidth to the cavities. The cavities have a resonant frequency within the predetermined bandwidth. The present invention also provides a device for optical single sideband with carrier (OSSB+C) transmission. The device has parallel-coupled cavities.
    Type: Application
    Filed: September 11, 2002
    Publication date: March 24, 2005
    Inventors: Arnan Mitchell, Rodney Waterhouse, Apalavanapillai Nirmalathas, Dalma Novak