Patents by Inventor Ren-Huei Shu

Ren-Huei Shu 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).

  • Method and apparatus for optical frequency measurement
    Patent number: 7830526
    Abstract: A method and an apparatus for optical frequency measurement, using one or two frequency-stabilized mode-locked laser combs operating at different repetition rates to mix with a laser under measurement (LUM) respectively so as to generate two beat frequencies. The ordinal comb number where the beat frequency is generated is determined by measuring the ordinal comb number difference where the two beat frequencies are generated at different repetition rates so as to obtain the frequency of the LUM. The ordinal comb number difference is measured by using a dispersion device to offer an approximate ordinal comb number or by operating a mode-locked laser at three different repetition rates.
    Type: Grant
    Filed: January 17, 2008
    Date of Patent: November 9, 2010
    Assignee: Industrial Technology Research Institute
    Inventors: Jin-Long Peng, Tze-An Liu, Ren-Huei Shu
  • METHOD AND APPARATUS FOR OPTICAL FREQUENCY MEASUREMENT
    Publication number: 20090097035
    Abstract: A method and an apparatus for optical frequency measurement, using one or two frequency-stabilized mode-locked laser combs operating at different repetition rates to mix with a laser under measurement (LUM) respectively so as to generate two beat frequencies. The ordinal comb number where the beat frequency is generated is determined by measuring the ordinal comb number difference where the two beat frequencies are generated at different repetition rates so as to obtain the frequency of the LUM. The ordinal comb number difference is measured by using a dispersion device to offer an approximate ordinal comb number or by operating a mode-locked laser at three different repetition rates.
    Type: Application
    Filed: January 17, 2008
    Publication date: April 16, 2009
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: JIN-LONG PENG, TZE-AN LIU, REN-HUEI SHU