Patents by Inventor Nitesh Gulati

Nitesh Gulati 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).

  • DIFFRACTIVE OPTICAL ELEMENT FABRICATION
    Publication number: 20220171282
    Abstract: Described herein are embodiments of a diffractive optical element (23) such as a grism. In one embodiment, the diffractive optical element (23) includes an input surface (31) configured to receive an input optical signal (29), a diffractive surface (33) adapted to spatially disperse the input optical beam (29) into a dispersed signal and an output surface (35) configured to output the dispersed signal from the diffractive optical element. The input surface (31) and the diffractive surface (33) are non-parallel and the diffractive surface (33) is formed in situ by a photolithographic technique.
    Type: Application
    Filed: February 18, 2022
    Publication date: June 2, 2022
    Inventors: Nitesh Gulati, Vincent Choo, Yiwei Xu, Glenn Wayne Baxter, Steven James Frisken
  • Diffractive optical element fabrication
    Patent number: 11300874
    Abstract: Described herein are embodiments of a diffractive optical element (23) such as a grism. In one embodiment, the diffractive optical element (23) includes an input surface (31) configured to receive an input optical signal (29), a diffractive surface (33) adapted to spatially disperse the input optical beam (29) into a dispersed signal and an output surface (35) configured to output the dispersed signal from the diffractive optical element. The input surface (31) and the diffractive surface (33) are non-parallel and the diffractive surface (33) is formed in situ by a photolithographic technique.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: April 12, 2022
    Assignee: II-VI Delaware, Inc.
    Inventors: Nitesh Gulati, Vincent Choo, Yiwei Xu, Glenn Wayne Baxter, Steven James Frisken
  • DIFFRACTIVE OPTICAL ELEMENT FABRICATION
    Publication number: 20190317256
    Abstract: Described herein are embodiments of a diffractive optical element (23) such as a grism. In one embodiment, the diffractive optical element (23) includes an input surface (31) configured to receive an input optical signal (29), a diffractive surface (33) adapted to spatially disperse the input optical beam (29) into a dispersed signal and an output surface (35) configured to output the dispersed signal from the diffractive optical element. The input surface (31) and the diffractive surface (33) are non-parallel and the diffractive surface (33) is formed in situ by a photolithographic technique.
    Type: Application
    Filed: April 11, 2019
    Publication date: October 17, 2019
    Applicant: Finisar Corporation
    Inventors: Nitesh Gulati, Vincent Choo, Yiwei Xu, Glenn Wayne Baxter, Steven James Frisken
  • Method for producing twisted optical fiber with reduced polarization mode dispersion
    Patent number: 7310974
    Abstract: A method for drawing an optical fiber having reduced polarization mode dispersion (PMD) draws an optical fiber from an optical fiber preform whose core ovality is at max about 3%, coats the optical fiber with acrylic polymer and twists the coated optical fiber with a pair of spinning wheels. The twisting of the fiber is achieved by four discrete spin rates that repeat in a periodic fashion after the drawing of certain lengths of the optical fiber. At least one of the spin rates varies in a trapezoidal manner along the respective one of drawn lengths of the optical fiber.
    Type: Grant
    Filed: January 9, 2004
    Date of Patent: December 25, 2007
    Assignee: Sterlite Optical Technologies Limited
    Inventors: Sangeeta Mohanty, Nacham Sridhar, Salaj Sinha, Nitesh Gulati, Sthitadhi Das
  • Method for producing twisted optical fiber with reduced polarization mode dispersion
    Publication number: 20040163418
    Abstract: A method for drawing an optical fiber having reduced polarization mode dispersion (PMD) draws an optical fiber from an optical fiber preform whose core ovality is at max about 3%, coats the optical fiber with acrylic polymer and twists the coated optical fiber with a pair of spinning wheels. The twisting of the fiber is achieved by four discrete spin rates that repeat in a periodic fashion after the drawing of certain lengths of the optical fiber. At least one of the spin rates varies in a trapezoidal manner along the respective one of drawn lengths of the optical fiber.
    Type: Application
    Filed: January 9, 2004
    Publication date: August 26, 2004
    Applicant: STERLITE OPTICAL TECHNOLOGIES LIMITED
    Inventors: Sangeeta Mohanty, Nacham Sridhar, Salaj Sinha, Nitesh Gulati, Sthitadhi Das