Patents by Inventor Kevin Yamada

Kevin Yamada 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).

  • Optical cross-connect switch with integrated optical signal tap
    Patent number: 6668108
    Abstract: An optical cross-connect with integrated optical signal tap is disclosed. In one embodiment, the switch includes two or more optical fiber input ports, lenses to produce collimated beams, one or more optical taps to couple a portion of the optical power from one or more input ports to one or more sample ports, movable mirrors to connect any input port with any output port, two or more optical fiber output ports, and lens to couple collimated beams into the output ports.
    Type: Grant
    Filed: June 2, 2000
    Date of Patent: December 23, 2003
    Assignee: Calient Networks, Inc.
    Inventors: Roger Helkey, John Bowers, Tony Walter, Kevin Yamada, David Welsh