Patents by Inventor Durgesh Shivram Vaidya

Durgesh Shivram Vaidya 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).

  • Accelerated aging of phosphorus-doped optical fibers
    Patent number: 8980369
    Abstract: Adverse hydrogen aging limitations in multiply-doped optical fibers are overcome by passivating these optical fibers using a deuterium passivation process. This treatment essentially pre-reacts the glass with deuterium so that the most active glass sites are no longer available to react with hydrogen in service. Optical fibers of main interest are doped with mixtures of germanium and phosphorus. Optimum passivating process conditions are described.
    Type: Grant
    Filed: May 21, 2013
    Date of Patent: March 17, 2015
    Assignee: OFS Fitel, LLC
    Inventors: David John DiGiovanni, Robert Lingle, Jr., Michael J LuValle, George E Oulundsen, Durgesh Shivram Vaidya
  • Bandwidth-maintaining multimode optical fibers
    Patent number: 8520994
    Abstract: The specification describes multimode optical fibers with specific design parameters, i.e., controlled refractive index design ratios and dimensions, which render the optical fibers largely immune to moderately severe bends. The modal structure in the optical fibers is also largely unaffected by bending, thus leaving the optical fiber bandwidth essentially unimpaired. Bend performance results were established by DMD measurements of fibers wound on mandrels vs. measurements of fibers with no severe bends.
    Type: Grant
    Filed: August 17, 2009
    Date of Patent: August 27, 2013
    Inventors: Jinkee Kim, George E. Oulundsen, Durgesh Shivram Vaidya, Man F. Yan, Xinli Jiang
  • Accelerated aging of phosphorus-doped optical fibers
    Patent number: 8445059
    Abstract: Adverse hydrogen aging limitations in multiply-doped optical fibers are overcome by passivating these optical fibers using a deuterium passivation process. This treatment essentially pre-reacts the glass with deuterium so that the most active glass sites are no longer available to react with hydrogen in service. Optical fibers of main interest are doped with mixtures of germanium and phosphorus. Optimum passivating process conditions are described.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: May 21, 2013
    Assignee: OFS Fitel, LLC
    Inventors: David J. DiGiovanni, Robert Lingle, Jr., Michael LuValle, George E. Oulundsen, Durgesh Shivram Vaidya
  • Accelerated aging of phosphorus-doped optical fibers
    Patent number: 8111961
    Abstract: Adverse hydrogen aging limitations in multiply-doped optical fibers are overcome by passivating these optical fibers using a deuterium passivation process. This treatment essentially pre-reacts the glass with deuterium so that the most active glass sites are no longer available to react with hydrogen in service. Optical fibers of main interest are doped with mixtures of germanium and phosphorus. Optimum passivating process conditions are described.
    Type: Grant
    Filed: February 26, 2008
    Date of Patent: February 7, 2012
    Assignee: OFS Fitel, LLC
    Inventors: David J. DiGiovanni, Michael LuValle, George E. Oulundsen, Durgesh Shivram Vaidya, Robert Lingle, Jr.
  • Bandwidth-maintaining multimode optical fibers
    Publication number: 20100067858
    Abstract: The specification describes multimode optical fibers with specific design parameters, i.e., controlled refractive index design ratios and dimensions, which render the optical fibers largely immune to moderately severe bends. The modal structure in the optical fibers is also largely unaffected by bending, thus leaving the optical fiber bandwidth essentially unimpaired. Bend performance results were established by DMD measurements of fibers wound on mandrels vs. measurements of fibers with no severe bends.
    Type: Application
    Filed: August 17, 2009
    Publication date: March 18, 2010
    Inventors: Jinkee Kim, George E. Oulundsen, Durgesh Shivram Vaidya, Man F. Yan, Xinli Jiang
  • Accelerated aging of phosphorus-doped optical fibers
    Publication number: 20090214769
    Abstract: Adverse hydrogen aging limitations in multiply-doped optical fibers are overcome by passivating these optical fibers using a deuterium passivation process. This treatment essentially pre-reacts the glass with deuterium so that the most active glass sites are no longer available to react with hydrogen in service. Optical fibers of main interest are doped with mixtures of germanium and phosphorus. Optimum passivating process conditions are described.
    Type: Application
    Filed: September 5, 2008
    Publication date: August 27, 2009
    Inventors: David J. DiGiovanni, Robert Lingle, JR., Michael LuValle, George E. Oulundsen, Durgesh Shivram Vaidya
  • Accelerated aging of phosphorus-doped optical fibers
    Publication number: 20090211303
    Abstract: Adverse hydrogen aging limitations in multiply-doped optical fibers are overcome by passivating these optical fibers using a deuterium passivation process. This treatment essentially pre-reacts the glass with deuterium so that the most active glass sites are no longer available to react with hydrogen in service. Optical fibers of main interest are doped with mixtures of germanium and phosphorus. Optimum passivating process conditions are described.
    Type: Application
    Filed: February 26, 2008
    Publication date: August 27, 2009
    Inventors: David J. DiGiovanni, Michael LuValle, George E. Oulundsen, Durgesh Shivram Vaidya, Robert Lingle, JR.