Patents by Inventor Hai Qing Li

Hai Qing Li 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: 6301399
    Abstract: The present invention relates to integrated optic modulator devices and methods for their fabrication. Lithium niobate substrates have waveguides fabricated in them for propagating light energy, preferably in Mach Zhender architectures. The waveguides are bordered by adjacent electrode metallizations of low resistivity, such as copper and silver, to provide the devices with high gain bandwidth products to reduce the cost of drive electronics and simplify processing procedures. Gain bandwidth products exceed 4.5×105.
    Type: Grant
    Filed: February 11, 1999
    Date of Patent: October 9, 2001
    Assignee: JDS Uniphase Corporation
    Inventors: Amaresh Mahapatra, Peter F. Hallemeier, Hai Qing Li