Patents by Inventor Suk Young Song

Suk Young Song 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).

  • Beat frequency stabilizing apparatus of pulse light and probe light for measuring strain distribution of optical fiber
    Patent number: 5751413
    Abstract: An apparatus for stabilizing the light output frequency of each laser diode for pulse light and probe light for measuring the distribution of strain, by controlling the change of the light output frequency of the laser diode due to external causes by input current of the laser diode. The apparatus is constructed such that the frequency variation of the laser diodes is detected to then generate a signal corresponding to the variation. Then, the signal is fed back to a temperature-current controller to be used as the input current signal of the laser diode.
    Type: Grant
    Filed: October 10, 1996
    Date of Patent: May 12, 1998
    Assignee: Korea Telecommunication Authority
    Inventors: Min Ho Chung, Tomohiro Murakami, Suk Young Song, Ki Yeul Kim, Ho Bum Lee, Jin Ki Cho, Young Ki Cho