Patents by Inventor Jongkyun Hong

Jongkyun Hong 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 wavelength coupler using multi-mode interference
    Patent number: 7680370
    Abstract: Provided is an optical wavelength coupler using a multi-mode interference. The optical wavelength coupler is a planar waveguide type optical device that can distribute or couple two optical signals having different wavelengths by using the multi-mode interference. The optical wavelength coupler is suitable for integration and is small-sized. Also, the optical wavelength coupler has a low manufacturing tolerance and a low loss, and is insensitive to TE/TM polarization.
    Type: Grant
    Filed: August 12, 2005
    Date of Patent: March 16, 2010
    Inventors: Bongjun Lee, Jongkyun Hong