Patents by Inventor Serge Grabtchak

Serge Grabtchak 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 structure with tightly curved waveguides
    Patent number: 7609931
    Abstract: Ridge and buried waveguide structures feature a plurality of trenches disposed proximate the waveguides in order to enhance confinement of an optical signal propagating within the waveguide are described. Additionally, an adiabatic transition region where the distance between trenches and waveguide is featured.
    Type: Grant
    Filed: June 23, 2006
    Date of Patent: October 27, 2009
    Assignee: Enablence, Inc.
    Inventors: Yury Logvin, Serge Grabtchak, Kirill Pimenov
  • Planar waveguide structure with tightly curved waveguides
    Publication number: 20070031083
    Abstract: Ridge and buried waveguide structures feature a plurality of trenches disposed proximate the waveguides in order to enhance confinement of an optical signal propagating within the waveguide are described. Additionally, an adiabatic transition region where the distance between trenches and waveguide is featured.
    Type: Application
    Filed: June 23, 2006
    Publication date: February 8, 2007
    Inventors: Yury Logvin, Serge Grabtchak, Kirill Pimenov
  • Planar waveguide structure with polarization compensation
    Patent number: 7020371
    Abstract: A design for a polarization independent ridge waveguide structure is shown. The inventive waveguide structure features discontinuous trenches formed on either side of the waveguide in which the waveguide has a first polarization characteristic absent the trenches and a second polarization characteristic when the trenches are present. The length of the trenches and the distance between the trenches are chosen to provide a desired amount of attenuation to each of the TE and TM modes. Additionally, this method is used to cause a predetermined polarization in order to compensate for the polarization of another optical component.
    Type: Grant
    Filed: May 24, 2004
    Date of Patent: March 28, 2006
    Assignee: MetroPhotonics Inc.
    Inventors: Yury Logvin, Serge Grabtchak
  • Planar waveguide structure with polarization compensation
    Publication number: 20040234223
    Abstract: A design for a polarization independent ridge waveguide structure is shown. The inventive waveguide structure features discontinuous trenches formed on either side of the waveguide in which the waveguide has a first polarization characteristic absent the trenches and a second polarization characteristic when the trenches are present. The length of the trenches and the distance between the trenches are chosen to provide a desired amount of attenuation to each of the TE and TM modes. Additionally, this method is used to cause a predetermined polarization in order to compensate for the polarization of another optical component.
    Type: Application
    Filed: May 24, 2004
    Publication date: November 25, 2004
    Inventors: Yury Logvin, Serge Grabtchak
  • Planar waveguide structure with tightly curved waveguides
    Publication number: 20040208465
    Abstract: Ridge and buried waveguide structures feature trenches disposed proximate the waveguides in order to enhance confinement of an optical signal propagating within the waveguide are described. Additionally, an adiabatic transition region in which the distance between the trenches and the waveguide is featured.
    Type: Application
    Filed: April 19, 2004
    Publication date: October 21, 2004
    Inventors: Yury Logvin, Serge Grabtchak, Kirill Pimenov