Patents Represented by Attorney Michael A. Morra, Esq.

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  • Sequentially increasing effective area in higher-order mode (HOM) Signal Propagation
    Patent number: 8000570
    Abstract: Disclosed are multi-stage optical amplifiers that propagate higher-order mode (HOM) signals. One embodiment, among others, comprises a first segment of optical fiber in which a first HOM signal propagates, a second segment of optical fiber in which a second HOM signal propagates, and a mode converter that converts the first HOM signal into the second HOM signal.
    Type: Grant
    Filed: February 5, 2008
    Date of Patent: August 16, 2011
    Assignee: Furukawa Electric North America, Inc.
    Inventors: David J Digiovanni, Siddharth Ramachandran
  • Pumping in a higher-order mode that is different from a signal mode
    Patent number: 7925128
    Abstract: The present disclosure provides an approach to more efficiently amplify signals by matching either the gain materials or the pump profile with the signal profile for a higher-order mode (HOM) signal. By doing so, more efficient energy extraction is achieved.
    Type: Grant
    Filed: February 5, 2008
    Date of Patent: April 12, 2011
    Assignee: OFS Fitel, LLC
    Inventor: Siddharth Ramachandran