Patents by Inventor Torger Tokle

Torger Tokle 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).

  • Step-index few-mode fiber designs for spatial multiplexing
    Patent number: 9250383
    Abstract: A few-mode optical fiber comprises a core surrounded by a cladding, having a step index profile that is structured to support propagation of a plurality of desired signal-carrying modes, while suppressing undesired modes. The core and cladding are configured such that the undesired modes have respective effective indices that are close to, or less than, the cladding index such that the undesired modes are leaky modes. The index spacing between the desired mode having the lowest effective index and the leaky mode with the highest effective index is sufficiently large so as to substantially prevent coupling therebetween.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: February 2, 2016
    Assignee: OFS FITEL, LLC
    Inventors: Lars Gruner-Nielsen, Robert L. Lingle, Alan McCurdy, David W. Peckham, Torger Tokle
  • Step-Index Few-Mode Fiber Designs For Spatial Multiplexing
    Publication number: 20140093205
    Abstract: A few-mode optical fiber comprises a core surrounded by a cladding, having a step index profile that is structured to support propagation of a plurality of desired signal-carrying modes, while suppressing undesired modes. The core and cladding are configured such that the undesired modes have respective effective indices that are close to, or less than, the cladding index such that the undesired modes are leaky modes. The index spacing between the desired mode having the lowest effective index and the leaky mode with the highest effective index is sufficiently large so as to substantially prevent coupling therebetween.
    Type: Application
    Filed: February 24, 2012
    Publication date: April 3, 2014
    Applicant: OFS FITEL, LLC
    Inventors: Lars Gruner-Nielsen, Robert L. Lingle, Alan McCurdy, David W. Peckham, Torger Tokle