Patents by Inventor Francesca Bontempi

Francesca Bontempi 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).

  • Planar waveguide circuit and optical receiver
    Patent number: 8861902
    Abstract: A planar waveguide circuit comprises a first optical splitter to receive an input optical signal, a second optical splitter to receive a reference optical signal, a first optical signal combiner, and a second optical signal combiner. First and second optical waveguides are provided to couple first and second outputs of the first optical splitter to respective inputs of the first and second optical signal combiners. Third and fourth optical waveguides are provided to couple first and second outputs of the second optical splitter to respective inputs of the first and second optical signal combiners. A phase-shifter is provided located to affect the phase of an optical signal propagating in one of the third and fourth optical waveguides. The first and second optical splitters and the first and second optical signal combiners are arranged such that the first, second, third and fourth optical waveguides do not intersect one another.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: October 14, 2014
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Francesca Bontempi, Luca Poti, Antonella Bogoni
  • Planar Waveguide Circuit and Optical Receiver
    Publication number: 20110229069
    Abstract: A planar waveguide circuit comprises a first optical splitter to receive an input optical signal, a second optical splitter to receive a reference optical signal, a first optical signal combiner, and a second optical signal combiner. First and second optical waveguides are provided to couple first and second outputs of the first optical splitter to respective inputs of the first and second optical signal combiners. Third and fourth optical waveguides are provided to couple first and second outputs of the second optical splitter to respective inputs of the first and second optical signal combiners. A phase-shifter is provided located to affect the phase of an optical signal propagating in one of the third and fourth optical waveguides. The first and second optical splitters and the first and second optical signal combiners are arranged such that the first, second, third and fourth optical waveguides do not intersect one another.
    Type: Application
    Filed: February 7, 2011
    Publication date: September 22, 2011
    Inventors: Francesca Bontempi, Luca Poti, Antonella Bogoni