Patents by Inventor Joseph I. Vanniasinkam

Joseph I. Vanniasinkam 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 demultiplexer and receiver assembly
    Patent number: 7532826
    Abstract: Apparatus for demultiplexing a wavelength division multiplexed optical signal comprising a plurality of signals each having a different wavelength. The apparatus comprises a demultiplexer sub-assembly and a multi-channel receiver optical sub-assembly. The demultiplexer sub-assembly comprises a filter block sub-assembly for splitting the input optical signal. The receiver optical sub-assembly comprises an array of photo detectors for converting the optical signals from the filter block sub-assembly into electrical signals. The electrical signals are amplified by amplifier ICs and transmitted through electrical leads. The demultiplexer sub-assembly and the multi-channel receiver optical sub-assembly are actively aligned and fixed together.
    Type: Grant
    Filed: September 2, 2005
    Date of Patent: May 12, 2009
    Assignee: Beam Express, Inc
    Inventors: Lijun Zhu, Grigore Suruceanu, Robert P. Lombaerde, Jignesh H. Shah, Joseph I. Vanniasinkam