Patents by Inventor Ewan Malcolm Wright

Ewan Malcolm Wright 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).

  • Multi-mode erbium micro fiber amplifier (EMFA)
    Patent number: 6738186
    Abstract: A compact, low-cost mid-gain Erbium Micro-Fiber Amplifier (EMFA) is provided by multi-mode pumping a micro fiber formed from a specialty multi-component glass and highly co-doped with Er:Yb. The specialty glass exhibits a much higher core absorption coefficient than standard glasses. As a result, the lower order modes are rapidly absorbed in the fiber core. The abrupt change in the mode profile perturbs the higher order modes and mode couples them into the lower order modes within a very short length of fiber, less than 20 cm. This “absorptive mode coupling” effect can double the absorption efficiency of a circular symmetric micro fiber and extend the length over which such a highly doped fiber can be efficiently inverted. The combination of multi-mode pumping with short fiber lengths reduces the form factor and cost of EMFAs.
    Type: Grant
    Filed: March 11, 2002
    Date of Patent: May 18, 2004
    Assignee: NP Photonics, Inc.
    Inventors: Shibin Jiang, Sergio Brito Mendes, Gualtiero Nunzi Conti, Dan T. Nguyen, Ewan Malcolm Wright, Arturo Chavez-Pirson, Yushi Kaneda
  • Multi-mode erbium micro fiber amplifier (EMFA)
    Publication number: 20030169489
    Abstract: A compact, low-cost mid-gain Erbium Micro-Fiber Amplifier (EMFA) is provided by multi-mode pumping a micro fiber formed from a specialty multi-component glass and highly co-doped with Er:Yb. The specialty glass exhibits a much higher core absorption coefficient than standard glasses. As a result, the lower order modes are rapidly absorbed in the fiber core. The abrupt change in the mode profile perturbs the higher order modes and mode couples them into the lower order modes within a very short length of fiber, less than 20 cm. This “absorptive mode coupling” effect can double the absorption efficiency of a circular symmetric micro fiber and extend the length over which such a highly doped fiber can be efficiently inverted. The combination of multi-mode pumping with short fiber lengths reduces the form factor and cost of EMFAs.
    Type: Application
    Filed: March 11, 2002
    Publication date: September 11, 2003
    Applicant: NP Photonics, Inc.
    Inventors: Shibin Jiang, Sergio Brito Mendes, Gualtiero Nunzi Conti, Dan T. Nguyen, Ewan Malcolm Wright, Arturo Chavez-Pirson, Yushi Kaneda