Patents by Inventor Evgeny M. Dianov

Evgeny M. Dianov 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).

  • Low-loss highly phosphorus-doped fibers for Raman amplification
    Publication number: 20020186942
    Abstract: A method of making a phosphosilicate fiber comprises the steps of: (i) manufacturing a preform containing phosphorus doped silica; and (ii) drawing phosphosilicate fiber from said preform at a temperature in the range of 1700° C. to 1900° C.
    Type: Application
    Filed: April 30, 2002
    Publication date: December 12, 2002
    Inventors: Mikhail M. Bubnov, Evelyn M. DeLiso, Evgeny M. Dianov, Alexey N. Guryanov, Vladimir F. Khopin, Dmitri V. Kuksenkov, Michael T. Murtagh, Ji Wang
  • Method for changing the refraction index in germanium silicate glass
    Patent number: 5903690
    Abstract: The present invention relates to a method for changing the refractive index in an element comprising germanium silicate glass by irradiating the germanium silicate glass with laser radiation having an associated wavelength in the range of 270 nm to 390 nm for exciting an absorption band in the glass centered at 330 nm. The element may be polymer coated in which instance the glass is irradiated through the polymer coating. In addition, the glass may have been exposed to a hydrogen atmosphere before being irradiated. In either instance, the laser radiation is directed at an angle to the surface of the element or along an optical axis of the element or both. The element may comprise a portion of an optical light guide, such as an optical fiber, or such as an integrated optical waveguide.
    Type: Grant
    Filed: August 18, 1998
    Date of Patent: May 11, 1999
    Assignee: D-Star Technologies, Inc.
    Inventors: Dmitry S. Starodubov, Evgeny M. Dianov, Artem A. Frolov