Patents by Inventor Yujie J. Ding

Yujie J. Ding 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).

  • Ultra-wide band slow light structure using plasmonic graded grating structures
    Patent number: 8208191
    Abstract: A slow light system includes a substrate and a metal layer formed thereon, the metal layer having a graded grating structure formed at a surface thereof, wherein the grating depth of the grating structure is sized such that surface-plasmon polariton dispersion behavior of the grating structure differs at different respective locations along the grating structure. Different wavelengths of incident light waves can be slowed at the respective locations along the grating structure.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: June 26, 2012
    Assignee: Leigh University
    Inventors: Qiaoqiang Gan, Zhan Fu, Yujie J. Ding, Filbert J. Bartoli
  • TERAHERTZ SOURCE
    Publication number: 20120044959
    Abstract: An optical system includes a first gain medium configured to be excited by an energy source and in response generate a first optical signal having first and second wavelengths. A Q-switch is disposed adjacent to the first gain medium for generating a pulsed optical signal in response to receiving the first optical signal. A non-linear optical crystal is configured to output a second optical signal having a frequency based on difference frequency generation of the first and second wavelengths of the pulsed optical signal.
    Type: Application
    Filed: June 7, 2011
    Publication date: February 23, 2012
    Applicant: LEHIGH UNIVERSITY
    Inventors: Pu ZHAO, Srinivasa Rao RAGAM, Yujie J. DING
  • ULTRA-WIDE BAND SLOW LIGHT STRUCTURE USING PLASMONIC GRADED GRATING STRUCTURES
    Publication number: 20100110525
    Abstract: A slow light system includes a substrate and a metal layer formed thereon, the metal layer having a graded grating structure formed at a surface thereof, wherein the grating depth of the grating structure is sized such that surface-plasmon polariton dispersion behavior of the grating structure differs at different respective locations along the grating structure. Different wavelengths of incident light waves can be slowed at the respective locations along the grating structure.
    Type: Application
    Filed: October 30, 2009
    Publication date: May 6, 2010
    Applicant: LEHIGH UNIVERSITY
    Inventors: Qiaoqiang GAN, Zhan FU, Yujie J. DING, Filbert J. BARTOLI