Patents by Inventor Oleksandr Kogan

Oleksandr Kogan 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).

  • Multimode fiber with intermediate clad layer
    Patent number: 9841559
    Abstract: An optical fiber including a multimode core having a radius, R1, and a maximum relative refractive index, ?1MAX, at a wavelength ?0, an inner clad layer surrounding the core and having a radial thickness, T2, and a minimum relative refractive index, ?2MIN, of about 0.0% at a wavelength of ?0, an intermediate clad layer surrounding the inner clad layer and having a radial thickness, T3, and a maximum relative refractive index ?3MAX and an outer clad layer surrounding the inner clad layer and having a radial thickness, T4, and a maximum relative refractive index, ?4MIN, at a wavelength of ?0. The optical fiber satisfies the following relationship: ?1MAX>?3MAX>?2MIN, and the optical fiber exhibits an overfilled bandwidth of greater than or equal to about 1.5 GHz-km at ?0.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: December 12, 2017
    Assignee: Corning Incorporated
    Inventors: Snigdharaj Kumar Mishra, Oleksandr Kogan, Simit Mayank Patel, Elios Klemo, Daniel J Halvorson
  • MULTIMODE FIBER WITH INTERMEDIATE CLAD LAYER
    Publication number: 20170242186
    Abstract: An optical fiber including a multimode core having a radius, R1, and a maximum relative refractive index, ?1MAX, at a wavelength ?0, an inner clad layer surrounding the core and having a radial thickness, T2, and a minimum relative refractive index, ?2MIN, of about 0.0% at a wavelength of ?0, an intermediate clad layer surrounding the inner clad layer and having a radial thickness, T3, and a maximum relative refractive index ?3MAX and an outer clad layer surrounding the inner clad layer and having a radial thickness, T4, and a maximum relative refractive index, ?4MIN, at a wavelength of ?0. The optical fiber satisfies the following relationship: ?1MAX>?3MAX>?2MIN, and the optical fiber exhibits an overfilled bandwidth of greater than or equal to about 1.5 GHz-km at ?0.
    Type: Application
    Filed: February 10, 2017
    Publication date: August 24, 2017
    Inventors: Snigdharaj Kumar Mishra, Oleksandr Kogan, Simit Mayank Patel, Elios Klemo, Daniel J. Halvorson
  • Method of making a multimode optical fiber
    Patent number: 9481599
    Abstract: A method of making a multimode optical fiber is disclosed. In one embodiment the method includes calculating a core radius that maximizes the bandwidth of the multimode optical fiber wherein the effect of draw tension is accounted for. The embodiments herein illustrate how core radius can be tuned so the time delay of the outermost guided mode group is reduced. The resultant core radius may be targeted for a value off-nominal from what would be expected for a particular commercial optical fiber type.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: November 1, 2016
    Assignee: CORNING INCORPORATED
    Inventors: Scott Robertson Bickham, Oleksandr Kogan, Ming-Jun Li, Snigdharaj Kumar Mishra, Pushkar Tandon
  • Moatless bend-optimized multimode fiber
    Patent number: 9360619
    Abstract: An optical fiber including a multimode core having a radius, R1, and a maximum relative refractive index, ?1MAX, at a wavelength ?0, an inner clad region surrounding the core and having a radial thickness, T2, and a minimum relative refractive index, ?2MIN, of about 0.0% at a wavelength of ?0, and an outer clad layer, which is doped with chlorine at greater than or equal to 0.5 weight %, surrounding the inner clad region and having a radial thickness, T3, and a maximum relative refractive index, ?3MAX, at a wavelength of ?0. The optical fiber satisfies the following relationship: ?1MAX>?3MAX>?2MIN, and the optical fiber exhibits an overfilled bandwidth of greater than or equal to about 1.5 GHz-km at ?0.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: June 7, 2016
    Assignee: Corning Incorporated
    Inventors: Dana Craig Bookbinder, Oleksandr Kogan, Ming-Jun Li, Snigdharaj Kumar Mishra, Pushkar Tandon
  • MOATLESS BEND-OPTIMIZED MULTIMODE FIBER
    Publication number: 20150378092
    Abstract: An optical fiber including a multimode core having a radius, R1, and a maximum relative refractive index, ?1MAX, at a wavelength ?0, an inner clad region surrounding the core and having a radial thickness, T2, and a minimum relative refractive index, ?2MIN, of about 0.0% at a wavelength of ?0, and an outer clad layer, which is doped with chlorine at greater than or equal to 0.5 weight %, surrounding the inner clad region and having a radial thickness, T3, and a maximum relative refractive index, ?3MAX, at a wavelength of ?0. The optical fiber satisfies the following relationship: ?1MAX>?3MAX>?2MIN, and the optical fiber exhibits an overfilled bandwidth of greater than or equal to about 1.5 GHz-km at ?0.
    Type: Application
    Filed: June 9, 2015
    Publication date: December 31, 2015
    Inventors: Dana Craig Bookbinder, Oleksandr Kogan, Ming-Jun Li, Snigdharaj Kumar Mishra, Pushkar Tandon
  • METHOD OF MAKING A MULTIMODE OPTICAL FIBER
    Publication number: 20130029038
    Abstract: A method of making a multimode optical fiber is disclosed. In one embodiment the method includes calculating a core radius that maximizes the bandwidth of the multimode optical fiber wherein the effect of draw tension is accounted for. The embodiments herein illustrate how core radius can be tuned so the time delay of the outermost guided mode group is reduced. The resultant core radius may be targeted for a value off-nominal from what would be expected for a particular commercial optical fiber type.
    Type: Application
    Filed: December 20, 2011
    Publication date: January 31, 2013
    Inventors: Scott Robertson Bickham, Oleksandr Kogan, Ming-Jun Li, Snigdharaj Kumar Mishra, Pushkar Tandon