Patents by Inventor Li Bowen

Li Bowen 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).

  • Patent number: 11715926
    Abstract: A bidirectional mode-locked fiber laser includes first and second passive optical fibers, a doped optical fiber, first and second polarization controllers, and first and second polarized beamsplitters that are arranged as a ring cavity with clockwise (CW) and counter-clockwise (CCW) directions. The laser imparts different nonlinear phase shifts in the CW and CCW directions, corresponding to CW and CCW repetition rates that are slightly different. When the normalized difference in repetition rates is less than approximately 10?5, both directions can be mode-locked simultaneously, thereby preventing one direction from inhibiting mode-locking of the other direction. Optical-fiber nonlinearity implements an intra-cavity bidirectional artificial saturable absorber based on nonlinear polarization rotation. The laser uses only components with normal group-velocity dispersion (GVD), thereby achieving higher pulse energies than mode-locked lasers utilizing negative GVD.
    Type: Grant
    Filed: January 29, 2021
    Date of Patent: August 1, 2023
    Assignee: The Regents of the University of Colorado, a body corporate
    Inventors: Shu-Wei Huang, Li Bowen
  • Publication number: 20230113927
    Abstract: A bidirectional mode-locked fiber laser includes first and second passive optical fibers, a doped optical fiber, first and second polarization controllers, and first and second polarized beamsplitters that are arranged as a ring cavity with clockwise (CW) and counter-clockwise (CCW) directions. The laser imparts different nonlinear phase shifts in the CW and CCW directions, corresponding to CW and CCW repetition rates that are slightly different. When the normalized difference in repetition rates is less than approximately 10?5, both directions can be mode-locked simultaneously, thereby preventing one direction from inhibiting mode-locking of the other direction. Optical-fiber nonlinearity implements an intra-cavity bidirectional artificial saturable absorber based on nonlinear polarization rotation. The laser uses only components with normal group-velocity dispersion (GVD), thereby achieving higher pulse energies than mode-locked lasers utilizing negative GVD.
    Type: Application
    Filed: January 29, 2021
    Publication date: April 13, 2023
    Inventors: Shu-Wei Huang, Li Bowen
  • Patent number: 8600793
    Abstract: A project management server automatically monitors the progress of an Enterprise Resource Planning (ERP) project represented by developing business configuration content for the ERP system. The project management server maintains a set of data representing a previous status of the development of business configuration content for the ERP system. The project management server requests a new set of data from the ERP system. The new set of data represents the current status of the development of business configuration content for the ERP system. The project management server automatically compares the two sets of data to determine the progress of the ERP project, generates a report showing the progress and updates the old set of data with the new set of data.
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: December 3, 2013
    Assignee: SAP AG
    Inventors: Liang Wang, Lei Chen, Xu Fang, Li Bowen
  • Publication number: 20080140490
    Abstract: A project management server automatically monitors the progress of an Enterprise Resource Planning (ERP) project represented by developing business configuration content for the ERP system. The project management server maintains a set of data representing a previous status of the development of business configuration content for the ERP system. The project management server requests a new set of data from the ERP system. The new set of data represents the current status of the development of business configuration content for the ERP system. The project management server automatically compares the two sets of data to determine the progress of the ERP project, generates a report showing the progress and updates the old set of data with the new set of data.
    Type: Application
    Filed: December 6, 2006
    Publication date: June 12, 2008
    Inventors: Liang Wang, Lei Chen, Xu Fang, Li Bowen