Patents by Inventor Abhijit Sengupta

Abhijit Sengupta 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).

  • Patent number: 11646794
    Abstract: Fiber optic connectors are provided that include a substrate having a groove therein, an optical fiber that is at least partly in the groove, an optical mode field converter or other focusing reflector that is positioned to receive an optical signal that is output from the optical fiber and a housing that surrounds the substrate and the optical fiber.
    Type: Grant
    Filed: September 14, 2021
    Date of Patent: May 9, 2023
    Assignee: CommScope, Inc. of North Carolina
    Inventor: Abhijit Sengupta
  • Publication number: 20210409117
    Abstract: Fiber optic connectors are provided that include a substrate having a groove therein, an optical fiber that is at least partly in the groove, an optical mode field converter or other focusing reflector that is positioned to receive an optical signal that is output from the optical fiber and a housing that surrounds the substrate and the optical fiber.
    Type: Application
    Filed: September 14, 2021
    Publication date: December 30, 2021
    Inventor: Abhijit Sengupta
  • Patent number: 11133870
    Abstract: Fiber optic connectors are provided that include a substrate having a groove therein, an optical fiber that is at least partly in the groove, an optical mode field converter or other focusing reflector that is positioned to receive an optical signal that is output from the optical fiber and a housing that surrounds the substrate and the optical fiber.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: September 28, 2021
    Assignee: CommScope, Inc. of North Carolina
    Inventor: Abhijit Sengupta
  • Publication number: 20150050019
    Abstract: Fiber optic connectors are provided that include a substrate having a groove therein, an optical fiber that is at least partly in the groove, an optical mode field converter or other focusing reflector that is positioned to receive an optical signal that is output from the optical fiber and a housing that surrounds the substrate and the optical fiber.
    Type: Application
    Filed: July 7, 2014
    Publication date: February 19, 2015
    Inventor: Abhijit Sengupta
  • Patent number: 8848175
    Abstract: A test system for a multi-mode fiber comprises a launching device that is configured to generate optical pulses and has a rest position. A centering system is operable to move the launching device in a circular motion having a center corresponding to the rest position and a diameter corresponding to a core diameter of the multi-mode fiber. The centering system is further operable to adjust a position of the multi-mode fiber relative to the launching device while the launching device is moving in the circle until an optical power coupled from the launching device into the multi-mode fiber is below a threshold. The centering system optically centers the launching device with the multi-mode fiber by fixing the position of the multi-mode fiber responsive to the optical power coupled from the launching device into the multi-mode fiber being below the threshold and returning the launching device to the rest position.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: September 30, 2014
    Assignee: CommScope, Inc. of North Carolina
    Inventor: Abhijit Sengupta
  • Publication number: 20140003777
    Abstract: Methods of fabricating light focusing elements for use in a fiber optic communications system are disclosed in which a plurality of light focusing elements are formed on or in a top surface of a substrate. The substrate is then diced to singulate the light focusing elements.
    Type: Application
    Filed: August 29, 2012
    Publication date: January 2, 2014
    Applicant: CommScope, Inc. of North Carolina
    Inventor: Abhijit Sengupta
  • Publication number: 20130236193
    Abstract: Fiber optic communications systems are provided that include an optical transmission source that is configured to transmit an optical signal having a first wavelength onto a multi-mode optical transmission path, an optical mode field converter that is optically coupled to the multi-mode optical transmission path, and an optical transmission medium that is optically coupled to the optical mode field converter. The multi-mode optical transmission path has a first cross-sectional area and the optical transmission medium has a second cross-sectional area that is smaller than the first cross-sectional area. The optical transmission medium is a few-mode transmission medium for the optical signal having the first wavelength.
    Type: Application
    Filed: August 27, 2012
    Publication date: September 12, 2013
    Applicant: CommScope, Inc. of North Carolina
    Inventor: Abhijit Sengupta
  • Publication number: 20110222052
    Abstract: A test system for a multi-mode fiber comprises a launching device that is configured to generate optical pulses and has a rest position. A centering system is operable to move the launching device in a circular motion having a center corresponding to the rest position and a diameter corresponding to a core diameter of the multi-mode fiber. The centering system is further operable to adjust a position of the multi-mode fiber relative to the launching device while the launching device is moving in the circle until an optical power coupled from the launching device into the multi-mode fiber is below a threshold. The centering system optically centers the launching device with the multi-mode fiber by fixing the position of the multi-mode fiber responsive to the optical power coupled from the launching device into the multi-mode fiber being below the threshold and returning the launching device to the rest position.
    Type: Application
    Filed: March 10, 2011
    Publication date: September 15, 2011
    Inventor: Abhijit Sengupta
  • Publication number: 20090006242
    Abstract: In an automatic auctioning method for determining market valuations, the auction process operates in two rounds, whereby the first round is a “sealed bid first price” auction while the second round is an “ascending price” auction. All bids and the winners of both rounds are kept confidential until the second round is completed. Data on bids made and consequential winning results are analysed and processed.
    Type: Application
    Filed: June 29, 2007
    Publication date: January 1, 2009
    Inventors: Iqbal Adjali, Malcolm Benjamin Dias, Abhijit Sengupta
  • Patent number: 6704100
    Abstract: Systems and methods are disclosed for measuring Polarization Mode Dispersion (PMD) of single-mode optical fiber. The method allows for a faster and easier method of accurately measuring intrinsic ultra low PMD optical fiber in a low mode coupling state. The method involves the introduction of a plurality of localized external perturbations on the optical fiber, after which the optical fiber is allowed to reach a steady state, and then measurement of the differential group delay occurs using standard measurement techniques. The plurality of localized external perturbations is altered followed by another measurement of the differential group delay. After obtaining a sufficient number of measurements to provide a Maxwellian distribution, the Polarization Mode Dispersion value can be calculated as the average of the distribution.
    Type: Grant
    Filed: August 8, 2002
    Date of Patent: March 9, 2004
    Assignee: Fitel USA Corp.
    Inventors: Abhijit Sengupta, Alan H. McCurdy
  • Publication number: 20040027559
    Abstract: Systems and methods are disclosed for measuring Polarization Mode Dispersion (PMD) of single-mode optical fiber. The method allows for a faster and easier method of accurately measuring intrinsic ultra low PMD optical fiber in a low mode coupling state. The method involves the introduction of a plurality of localized external perturbations on the optical fiber, after which the optical fiber is allowed to reach a steady state, and then measurement of the differential group delay occurs using standard measurement techniques. The plurality of localized external perturbations is altered followed by another measurement of the differential group delay. After obtaining a sufficient number of measurements to provide a Maxwellian distribution, the Polarization Mode Dispersion value can be calculated as the average of the distribution.
    Type: Application
    Filed: August 8, 2002
    Publication date: February 12, 2004
    Applicant: Fitel U.S.A. Corp.
    Inventors: Abhijit Sengupta, Alan H. McCurdy