Patents by Inventor Douglas P. Bonnell

Douglas P. Bonnell 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).

  • Narrowband twisted optical fiber wavelength division multiplexer
    Patent number: 5491764
    Abstract: A narrowband twisted optical fiber wavelength division multiplexer ("WDM") and a method for fabricating the WDM. The WDM includes a twisted pair of first and second optical fibers that are fused together, each of the first and second fibers having a first and second end. In the WDM, when a first and second light are applied to the first end of the first fiber, they will appear on the second end of the first fiber and the second end of the second fiber, respectively. When the first light enters the second end of the first fiber, and the second light is applied to the second end of the second fiber, they will both appear on the first end of the first fiber.
    Type: Grant
    Filed: May 31, 1994
    Date of Patent: February 13, 1996
    Assignee: Tacan Corporation
    Inventors: Andong Hu, Douglas P. Bonnell