Patents by Inventor Likai Zhu

Likai Zhu 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 transmission using few-mode fibers
    Patent number: 9563011
    Abstract: In some embodiments, an optical transmission system includes a few-mode fiber that supports at least 2 spatial modes but no more than 50 spatial modes.
    Type: Grant
    Filed: January 27, 2011
    Date of Patent: February 7, 2017
    Assignee: University of Central Florida Research Foundation, Inc.
    Inventors: Guifang Li, Fatih Yaman, Xiaobo Xie, Likai Zhu, Neng Bai, Cen Xia
  • Efficient computation and compensation of linear and nonlinear distortion in dispersion-managed fiber-opic transmission
    Patent number: 8805209
    Abstract: In one embodiment, a method for performing nonlinearity compensation on a dispersion-managed optical signal that was transmitted over an optical communication link, the method including virtually dividing the communication link into a plurality of steps, performing lumped dispersion compensation on a received optical signal to obtain a waveform upon which digital backward propagation (DBP) can be performed, performing DBP by performing dispersion compensation and nonlinearity compensation for each step, and generating an estimate of the transmitted signal based upon the performed DBP.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: August 12, 2014
    Inventors: Guifang Li, Likai Zhu
  • Optical Transmission Using Few-Mode Fibers
    Publication number: 20130064554
    Abstract: In some embodiments, an optical transmission system includes a few-mode fiber that supports at least 2 spatial modes but no more than 50 spatial modes.
    Type: Application
    Filed: January 27, 2011
    Publication date: March 14, 2013
    Applicant: UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION INC.
    Inventors: Guifang Li, Fatih Yaman, Xiaobo Xie, Likai Zhu, Neng Bai, Cen Xia
  • Efficient Computation And Compensation Of Linear And Nonlinear Distortion In Dispersion-Managed Fiber-Opic Transmission
    Publication number: 20120219303
    Abstract: In one embodiment, a method for performing nonlinearity compensation on a dispersion-managed optical signal that was transmitted over an optical communication link, the method including virtually dividing the communication link into a plurality of steps, performing lumped dispersion compensation on a received optical signal to obtain a waveform upon which digital backward propagation (DBP) can be performed, performing DBP by performing dispersion compensation and nonlinearity compensation for each step, and generating an estimate of the transmitted signal based upon the performed DBP.
    Type: Application
    Filed: February 24, 2012
    Publication date: August 30, 2012
    Applicant: University of Central Florida Research Foundation, Inc.
    Inventors: Guifang Li, Likai Zhu
  • Electronic post-compensation of optical transmission impairments using digital backward propagation
    Patent number: 8204389
    Abstract: Systems and method of compensating for transmission impairment are disclosed. One such method comprises: receiving an optical signal which has been distorted in the physical domain by an optical transmission channel; and propagating the distorted optical signal backward in the electronic domain in a corresponding virtual optical transmission channel.
    Type: Grant
    Filed: January 9, 2009
    Date of Patent: June 19, 2012
    Assignee: University of Central Florida Research Foundation, Inc.
    Inventors: Guifang Li, Eduardo Mateo, Likai Zhu, Xiaoxu Li, Gilad Goldfarb, Xin Chen, Inwoong Kim, Fatih Yaman
  • Electronic Post-Compensation of Optical Transmission Impairments Using Digital Backward Propagation
    Publication number: 20090214215
    Abstract: Systems and method of compensating for transmission impairment are disclosed. One such method comprises: receiving an optical signal which has been distorted in the physical domain by an optical transmission channel; and propagating the distorted optical signal backward in the electronic domain in a corresponding virtual optical transmission channel.
    Type: Application
    Filed: January 9, 2009
    Publication date: August 27, 2009
    Applicant: UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC.
    Inventors: Guifang Li, Eduardo Mateo, Likai Zhu, Xiaoxu Li, Gilad Goldfarb, Xin Chen, Inwoong Kim, Fatih Yaman