Patents by Inventor Alexej Sysoliatin

Alexej Sysoliatin 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 fiber with high small-angle scatter and sensor using same
    Patent number: 7103250
    Abstract: An optical fiber (10) having a first section (10A) with little or no small-angle scattering (SAS) and a second section (10B) with an increased amount of SAS is disclosed. The optical fiber is formed by changing the draw temperature (TD) and/or the draw speed (VD) so as to induce index of refraction perturbations (P) at a core interface (40). The SAS optical fiber is useful in forming an evanescent optical fiber sensor (400), wherein the increased SAS enhances an evanescent wave portion (436) of a guided wave (434), which leads to increased sensitivity when measuring a property of a test medium (500).
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: September 5, 2006
    Assignee: Corning Incorporated
    Inventors: Lu Zhang, Daniel Aloysius Nolan, Snigdharaj Kumar Mishra, Alexej Sysoliatin
  • Devices and methods for dynamic dispersion compensation
    Patent number: 7068943
    Abstract: The present invention provides devices and methods for dynamic dispersion compensation. According to one embodiment of the invention, a dispersion compensating device includes a negative dispersion fiber having an input configured to receive the optical signal, the negative dispersion fiber having a length and dispersion sufficient to remove any positive chirp from each wavelength channel of the optical signal, thereby outputting a negatively chirped optical signal; an amplifying device configured to amplify the negatively chirped optical signal; and a nonlinear positive dispersion fiber configured to receive the negatively chirped optical signal. The devices of the present invention provide broadband compensation for systems having a wide range of variable residual dispersions.
    Type: Grant
    Filed: February 13, 2004
    Date of Patent: June 27, 2006
    Assignee: Corning Incorporated
    Inventors: Andrey E. Korolev, Dmitri V. Kuksenkov, Shenping Li, Daniel A. Nolan, Michael Sauer, Alexej Sysoliatin
  • Devices and methods for dynamic dispersion compensation
    Publication number: 20040184815
    Abstract: The present invention provides devices and methods for dynamic dispersion compensation. According to one embodiment of the invention, a dispersion compensating device includes a negative dispersion fiber having an input configured to receive the optical signal, the negative dispersion fiber having a length and dispersion sufficient to remove any positive chirp from each wavelength channel of the optical signal, thereby outputting a negatively chirped optical signal; an amplifying device configured to amplify the negatively chirped optical signal; and a nonlinear positive dispersion fiber configured to receive the negatively chirped optical signal. The devices of the present invention provide broadband compensation for systems having a wide range of variable residual dispersions.
    Type: Application
    Filed: February 13, 2004
    Publication date: September 23, 2004
    Inventors: Andrey E. Korolev, Dmitri V. Kuksenkov, Shenping Li, Daniel A. Nolan, Michael Sauer, Alexej Sysoliatin