Patents by Inventor Neng Bai

Neng Bai 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
  • Systems and methods for optical transmission using supermodes
    Patent number: 9103961
    Abstract: In some embodiments, coupled multi-core fiber is used for optical transmission. The coupled multi-core fiber includes multiple cores each supporting a spatial mode. The cores are positioned close enough to cause coupling between their modes that generates supermodes, that are used to transmit data.
    Type: Grant
    Filed: August 13, 2012
    Date of Patent: August 11, 2015
    Assignee: University of Central Florida Research Foundation, Inc.
    Inventors: Guifang Li, Xia Cen, Neng Bai
  • Nonlinear compensation using an enhanced backpropagation method with subbanding
    Patent number: 8873971
    Abstract: Systems and methods are disclosed to perform nonlinear compensation (NLC) in an optical communication system by applying digital backpropagation (DBP) using a frequency-shaped split-step Fourier method (FS-SSFM), and processing a data block using an overlap-and-save method with a block size M and an overlap factor of N samples between adjacent blocks.
    Type: Grant
    Filed: October 10, 2011
    Date of Patent: October 28, 2014
    Assignee: NEC Laboratories America, Inc.
    Inventors: Ezra Ip, Neng Bai
  • Multimode optical amplifier with close-loop modal gain control
    Patent number: 8767288
    Abstract: Systems and methods for amplification are shown that include a pump preparation module configured to provide a pump output that includes a plurality of pump modes; an amplification module configured to accept a multimode signal input and the pump output, such that the pump output causes an amplification of a plurality of modes in the signal input to produce an amplified signal output; and a gain control module configured to adjust a balance of the plurality of pump modes in the pump output to produce a predetermined amplified signal output.
    Type: Grant
    Filed: April 11, 2012
    Date of Patent: July 1, 2014
    Assignee: NEC Laboratories America, Inc.
    Inventors: Neng Bai, Ezra Ip
  • Systems and methods for compensating for interference in multimode optical fiber
    Publication number: 20130230311
    Abstract: In one embodiment, compensating for interference in optical fiber relates to receiving a signal transmitted over the optical fiber, multiplying the signal by a frequency domain equalization (FDE) filter that compensates for the interference to obtain a filtered signal, computing an error in the filtered signal, estimating a gradient based upon the computed error, and updating the FDE filter using the estimated gradient.
    Type: Application
    Filed: October 3, 2012
    Publication date: September 5, 2013
    Inventors: Neng Bai, Guifang Li
  • 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
  • NONLINEAR COMPENSATION USING AN ENHANCED BACKPROPAGATION METHOD WITH SUBBANDING
    Publication number: 20120263481
    Abstract: Systems and methods are disclosed to perform nonlinear compensation (NLC) in an optical communication system by applying digital backpropagation (DBP) using a frequency-shaped split-step Fourier method (FS-SSFM), and processing a data block using an overlap-and-save method with a block size M and an overlap factor of N samples between adjacent blocks.
    Type: Application
    Filed: October 10, 2011
    Publication date: October 18, 2012
    Applicant: NEC LABORATORIES AMERICA, INC.
    Inventors: Ezra Ip, Neng Bai
  • MULTIMODE OPTICAL AMPLIFIER WITH CLOSE-LOOP MODAL GAIN CONTROL
    Publication number: 20120262780
    Abstract: Systems and methods for amplification are shown that include a pump preparation module configured to provide a pump output that includes a plurality of pump modes; an amplification module configured to accept a multimode signal input and the pump output, such that the pump output causes an amplification of a plurality of modes in the signal input to produce an amplified signal output; and a gain control module configured to adjust a balance of the plurality of pump modes in the pump output to produce a predetermined amplified signal output.
    Type: Application
    Filed: April 11, 2012
    Publication date: October 18, 2012
    Applicant: NEC LABORATORIES AMERICA, INC.
    Inventors: Neng Bai, Ezra Ip