Patents by Inventor Sreena Dayanandan

Sreena Dayanandan 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).

  • Optical fiber having low and uniform optical loss along the entire length and method for fabricating the same
    Publication number: 20070125129
    Abstract: A method for producing optical fiber preform capable of producing optical fiber having low and uniform optical attenuation loss along its entire length including :he top end portion is provided. The method comprises carrying out simultaneously sintering and collapsing steps by inserting the dehydrated hollow soot porous body; with predetermined speed in hot zone of the furnace till its top end reaches the hot zone and is left for a predetermined duration thereafter the preform is uplifted for a predetermined length at a predetermined speed to avoid heat loss in the optical)reform and re-inserted in the hot zone of sintering furnace at a predetermined speed and left for predetermined duration to result in formation of the preform having collapsed capillary including at its top end.
    Type: Application
    Filed: December 8, 2006
    Publication date: June 7, 2007
    Inventors: Sreena Dayanandan, Sanket Shah, Ravikiran Acharya, Jegan Miras
  • Optical fiber with low attenuation at 1380 nm wavelength region and the method of producing the same
    Publication number: 20070022787
    Abstract: The present invention relates to a method of preparing low attenuation single mode fiber and particularly to the preparation of optical fiber preform from which single mode optical fiber is drawn shows low transmission loss in the 1360 to 1460 nm (E-band) wavelength region.
    Type: Application
    Filed: October 27, 2005
    Publication date: February 1, 2007
    Inventors: Kaushal Gupta, Sreena Dayanandan, Manas Sahu, Koilakh Ahmed, Hrudaya Sahu