Patents by Inventor Patrick LiKam Wa

Patrick LiKam Wa 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).

  • Monolithic integrated active semiconductor optical switch for a 1×N interconnect switch
    Patent number: 6404944
    Abstract: The present invention provides an active semiconductor optical switch for a 1×N interconnect switch having an input light channel, a plurality of output light channels, and a steering section coupled between the input and output channels. The steering section selectively directs an input light signal from the input light channel to an M number of the plurality of output light channels, where M ranges from one to the total number of output light channels of the plurality. The steering section includes transversely-spaced first and second elongate electrical contacts and an elongate slab waveguide extending therebetween. The slab waveguide is formed from a material having an optical refractive index responsive to a first electrical current applied to the first electrical contact and a second electrical current applied to the second electrical contact.
    Type: Grant
    Filed: May 23, 2000
    Date of Patent: June 11, 2002
    Assignee: Unveristy of Central Florida
    Inventors: Patrick LiKam Wa, Xuesong Dong