Patents by Inventor Hongsheng Wang

Hongsheng Wang 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).

  • System and Method for Optical Communication Using Polarization Filtering
    Publication number: 20110157688
    Abstract: An optical circuit is described which may include an SOA-MZI circuit providing an output signal; and a polarization filtering device (PFD) configured to receive the output signal of the SOA-MZI and to provide at least one signal at the output of the PFD.
    Type: Application
    Filed: March 11, 2011
    Publication date: June 30, 2011
    Applicant: Alphion Corporation
    Inventor: Hongsheng Wang
  • System and method for optical communication using polarization filtering
    Patent number: 7924498
    Abstract: An optical circuit is described which may include an SOA-MZI circuit providing an output signal; and a polarization filtering device (PFD) configured to receive the output signal of the SOA-MZI and to provide at least one signal at the output of the PFD.
    Type: Grant
    Filed: March 6, 2008
    Date of Patent: April 12, 2011
    Assignee: Alphion Corporation
    Inventor: Hongsheng Wang
  • System and Method for Optical Communication Using Polarization Filtering
    Publication number: 20090059355
    Abstract: An optical circuit is described which may include an SOA-MZI circuit providing an output signal; and a polarization filtering device (PFD) configured to receive the output signal of the SOA-MZI and to provide at least one signal at the output of the PFD.
    Type: Application
    Filed: March 6, 2008
    Publication date: March 5, 2009
    Applicant: ALPHION CORPORATION
    Inventor: Hongsheng Wang
  • Integrated performance monitoring, performance maintenance, and failure detection for photonic regenerators
    Patent number: 7319555
    Abstract: Monitoring of the input power is performed on-chip and is used to monitor and maintain performance, detect failure and trigger network protection strategies. An optical power-monitoring technique uses a photodetector monolithically integrated with the semiconductor optical amplifier—Mach-Zehnder interferometer circuit to monitor the P2R device and keep the output stable while the input power varies.
    Type: Grant
    Filed: April 27, 2006
    Date of Patent: January 15, 2008
    Assignee: Alphion Corporation
    Inventors: Ganesh Lakshminarayana, Ruomei Mu, Hongsheng Wang, Jithamithra Sarathy, Boris Stefanov
  • Integrated performance monitoring, performance maintenance, and failure detection for photonic regenerators
    Publication number: 20070008613
    Abstract: Monitoring of the input power is performed on-chip and is used to monitor and maintain performance, detect failure and trigger network protection strategies. An optical power-monitoring technique uses a photodetector monolithically integrated with the semiconductor optical amplifier—Mach-Zehnder interferometer circuit to monitor the P2R device and keep the output stable while the input power varies.
    Type: Application
    Filed: April 27, 2006
    Publication date: January 11, 2007
    Inventors: Ganesh Lakshminarayana, Ruomei Mu, Hongsheng Wang, Jithamithra Sarathy, Boris Stefanov
  • Long-wavelength VCSELs and method of manufacturing same
    Patent number: 6362069
    Abstract: The present invention provides a method of manufacturing VCSELs which involves a flip-bonding process wherein the top surface of the VCSEL wafer is bonded face down onto a surrogate substrate. The process begins in a manner similar to traditional double dielectric stack based VCSEL, but then involves flip-bonding the wafer onto an In or Ag epoxy coated surrogate substrate. The InP substrate is then selectively etched. After flip-bonding the wafer fabrication proceeds on the freshly etched surface which now forms the top surface. Next, standard mesa-isolation and contact formation techniques are performed on this newly etched surface.
    Type: Grant
    Filed: December 28, 2000
    Date of Patent: March 26, 2002
    Assignee: The Trustees of Princeton University
    Inventors: Stephen Forrest, Milind R. Gokhale, Hongsheng Wang