Patents by Inventor Douglas P. Holcomb

Douglas P. Holcomb 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).

  • Patent number: 8320039
    Abstract: An optical amplifier comprises at least two gain regions, an intermediate region situated between the gain regions, and a transition region situated between the intermediate region and each gain region. The aforesaid regions have claddings that collectively form a path for pump radiation propagating from at least one of the gain regions to the other gain region, and cores that collectively form a path for signal radiation propagating from at least one of the gain regions to the other gain region. The cores in the gain regions support multiple propagating optical modes, including at least one signal mode and at least one non-signal mode. The intermediate region, however, supports fewer propagating core modes than are supported by the gain regions. The transition regions are conformed such that when radiation in propagating non-signal core modes passes from the gain regions into the intermediate region, it is at least partly coupled into cladding modes of the intermediate region.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: November 27, 2012
    Assignee: LGS Innovations LLC
    Inventors: Douglas P. Holcomb, Thomas Huntington Wood, Paul Wysocki
  • Publication number: 20110255153
    Abstract: An optical amplifier comprises at least two gain regions, an intermediate region situated between the gain regions, and a transition region situated between the intermediate region and each gain region. The aforesaid regions have claddings that collectively form a path for pump radiation propagating from at least one of the gain regions to the other gain region, and cores that collectively form a path for signal radiation propagating from at least one of the gain regions to the other gain region. The cores in the gain regions support multiple propagating optical modes, including at least one signal mode and at least one non-signal mode. The intermediate region, however, supports fewer propagating core modes than are supported by the gain regions. The transition regions are conformed such that when radiation in propagating non-signal core modes passes from the gain regions into the intermediate region, it is at least partly coupled into cladding modes of the intermediate region.
    Type: Application
    Filed: April 16, 2010
    Publication date: October 20, 2011
    Inventors: Douglas P. Holcomb, Thomas Huntington Wood, Paul Wysocki
  • Patent number: 7409128
    Abstract: An improved tapered fiber bundle (TFB), or assembly including a TFB, mitigates undesirable reflections from optical discontinuities at the input ends of the multimode fibers of the TFB by suppressing the coupling of signal light into modes that can produce undesired reflections. Means are provided for managing the mode field of injected signal light so that it remains substantially confined to the core of the central TFB fiber until it is past the region where it can interact with the multimode fibers of the TFB.
    Type: Grant
    Filed: June 29, 2005
    Date of Patent: August 5, 2008
    Assignee: Lucent Technologies Inc.
    Inventors: Douglas P Holcomb, Andrew John Stentz, Stephan F Wielandy, Paul F Wysocki
  • Patent number: 7215860
    Abstract: The present invention provides an apparatus comprising a passive optical transmission fiber. The passive optical transmission fiber comprises a passive glass fiber core, a glass optical inner cladding surrounding the core and a glass optical outer cladding surrounding the inner cladding. The inner cladding has a lower index of refraction than the passive glass fiber core and the outer cladding has a lower index of refraction than the inner cladding. The passive optical transmission fiber also comprises a second optical segment coupled to the optical fiber. The second optical segment is configured to dissipate light in the inner cladding.
    Type: Grant
    Filed: May 2, 2005
    Date of Patent: May 8, 2007
    Assignee: Lucent Technologies Inc.
    Inventors: Jon W. Engelberth, Douglas P. Holcomb, Paul F. Wysocki
  • Patent number: 6456637
    Abstract: In accordance with the invention, a waveguide laser or amplifier having a peak absorption wavelength is provided with pump emitters having wavelengths deliberately offset from the peak absorption wavelength. The offset wavelengths of the emitters are chosen to enhance the thermal stability of the laser or amplifier. In one exemplary embodiment, the laser or amplifier is pumped by a bimodal distribution of emitters.
    Type: Grant
    Filed: May 30, 2000
    Date of Patent: September 24, 2002
    Assignee: Lucent Technologies Inc.
    Inventors: Douglas P. Holcomb, Jane Deborah LeGrange, Gerald E. Tourgee, Eva Milar Vogel
  • Patent number: D701973
    Type: Grant
    Filed: March 6, 2013
    Date of Patent: April 1, 2014
    Assignee: TogetherFarm LLC
    Inventors: Douglas P. Holcomb, Joseph M. Aakre, Matthew A. Stormont