Patents by Inventor Snigdharaj Kumar Mishra

Snigdharaj Kumar Mishra 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).

  • Alkali and fluorine doped optical fiber
    Patent number: 7088900
    Abstract: Disclosed is an optical fiber having a core of SiO2 doped with fluorine and an alkali metal oxide dopant. The alkali metal oxide is selected from the group consisting of K, Na, Li, Cs and Rb and is provided in amount of at least 20 ppm wt. %. The fiber has an inner cladding surrounding the core, which also includes fluorine. A relative refractive index of the inner cladding (?2%), measured relative to pure silica, is preferably between ?0.39% and ?0.7%. The fiber preferably exhibits attenuation at 1550 nm of less than or equal to 0.178 dB/km.
    Type: Grant
    Filed: April 14, 2005
    Date of Patent: August 8, 2006
    Assignee: Corning Incorporated
    Inventor: Snigdharaj Kumar Mishra
  • Large effective area high SBS threshold optical fiber
    Patent number: 7082243
    Abstract: An optical waveguide fiber having a high threshold for stimulated Brillouin scattering. The optical fiber preferably has large optical effective area, and further preferably has a low zero dispersion wavelength.
    Type: Grant
    Filed: October 3, 2005
    Date of Patent: July 25, 2006
    Assignee: Corning Incorporated
    Inventors: Scott Robertson Bickham, Snigdharaj Kumar Mishra