Patents by Inventor Hailiang Zhang

Hailiang Zhang 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: 6954253
    Abstract: A novel aspect to the invention is a structural arrangement to widen the Fabry-Perot gap beyond a 100-micron LC thickness. The widening permits greatly enhanced spectral discrimination (i.e. many more WDM channels) across the device response range, which is expanded to ITU standards by use of the twin etalon configuration. A liquid crystal optical multiplexer according to the present invention is a two-etalon Fabry-Perot laser etched into many (>100) sub-etalons in a rectangular array. Each sub-etalon is independently tunable and can be coupled to a distinct fiber. Any single sub-etalon or random combination of sub-etalons is free to be tuned to a particular wavelength corresponding to one of the input channels. This allows for any combination of signals (i.e digital video, data and voice) in a signal broadband channel to be switched to any of several receivers. Wavelength division multiplexing (WDM) is used to combine or separate individual types of signals from a single fiber.
    Type: Grant
    Filed: February 2, 2001
    Date of Patent: October 11, 2005
    Assignee: Scientific Solutions, Inc.
    Inventors: John Noto, Robert B. Kerr, Hailiang Zhang, William Z. Marder, Anthony C. Warren
  • Patent number: 6812993
    Abstract: A novel aspect of the invention is a structural arrangement to widen a Fabry-Perot gap beyond a 100-micron LC thickness. The widening permits greatly enhanced spectral discrimination (i.e. many more WDM channels) across the device response range, which is expanded to ITU standards by use of a twin etalon configuration. A liquid crystal optical multiplexer according to the present invention is a two-etalon Fabry-Perot laser etched into many (>100) sub-etalons in a rectangular array. Each sub-etalon is independently tunable and can be coupled to a distinct fiber. Any single sub-etalon or random combination of sub-etalons is free to be tuned to a particular wavelength corresponding to one of the input channels. This allows for any combination of signals (i.e. digital video, data and voice) in a signal broadband channel to be switched to any of several receivers. Wavelength division multiplexing (WDM) is used to combine or separate individual types of signals from a single fiber.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: November 2, 2004
    Assignee: Scientific Solutions, Inc.
    Inventors: John Noto, Robert B. Kerr, Hailiang Zhang, William Z. Marder, Anthony C. Warren
  • Patent number: 6757046
    Abstract: An LC optical multiplexer according to the present invention is a two-etalon Fabry-Perot laser etched into many (>100) sub-etalons in a rectangular array. Each sub-etalon is independently tunable and can be coupled to a distinct fiber. Any single sub-etalon or random combination of sub-etalons is free to be tuned to a particular wavelength corresponding to one of the input channels. This allows for any combination of signals (i.e digital video, data and voice) in a signal broadband channel to be switched to any of several receivers. Wavelength division multiplexing (WDM) is used to combine or separate individual types of signals from a single fiber. Phase-matching coatings are used on the materials within the Fabry-Perot gap, thereby enhancing transmission performance of the WDM device. Mechanical techniques are used to widen the Fabry-Perot gap beyond a 100-micron LC thickness. The widening permits greatly enhanced spectral discrimination (i.e.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: June 29, 2004
    Assignee: Scientific Solutions, Inc.
    Inventors: John Noto, Robert B. Kerr, Hailiang Zhang, William Z. Marder, Anthony C. Warren
  • Publication number: 20030214622
    Abstract: An LC optical multiplexer according to the present invention is a two-etalon Fabry-Perot laser etched into many (>100) sub-etalons in a rectangular array. Each sub-etalon is independently tunable and can be coupled to a distinct fiber. Any single sub-etalon or random combination of sub-etalons is free to be tuned to a particular wavelength corresponding to one of the input channels. This allows for any combination of signals (i.e digital video, data and voice) in a signal broadband channel to be switched to any of several receivers. Wavelength division multiplexing (WDM) is used to combine or separate individual types of signals from a single fiber. Phase-matching coatings are used on the materials within the Fabry-Perot gap, thereby enhancing transmission performance of the WDM device. Mechanical techniques are used to widen the Fabry-Perot gap beyond a 100-micron LC thickness. The widening permits greatly enhanced spectral discrimination (i.e.
    Type: Application
    Filed: April 1, 2003
    Publication date: November 20, 2003
    Inventors: John Noto, Robert B. Kerr, Hailiang Zhang, William Z. Marder, Anthony C. Warren
  • Publication number: 20030206267
    Abstract: An LC optical multiplexer according to the present invention is a two-etalon Fabry-Perot laser etched into many (>100) sub-etalons in a rectangular array. Each sub-etalon is independently tunable and can be coupled to a distinct fiber. Any single sub-etalon or random combination of sub-etalons is free to be tuned to a particular wavelength corresponding to one of the input channels. This allows for any combination of signals (i.e digital video, data and voice) in a signal broadband channel to be switched to any of several receivers. Wavelength division multiplexing (WDM) is used to combine or separate individual types of signals from a single fiber. Phase-matching coatings are used on the materials within the Fabry-Perot gap, thereby enhancing transmission performance of the WDM device. Mechanical techniques are used to widen the Fabry-Perot gap beyond a 100-micron LC thickness. The widening permits greatly enhanced spectral discrimination (i.e.
    Type: Application
    Filed: April 1, 2003
    Publication date: November 6, 2003
    Inventors: John Noto, Robert B. Kerr, Hailiang Zhang, William Z. Marder, Anthony C. Warren
  • Publication number: 20020154268
    Abstract: An LC optical multiplexer according to the present invention is a two-etalon Fabry-perot laser etched into many (>100) sub-etalons in a rectangular array. Each sub-etalon is independently tunable and can be coupled to a distinct fiber. Any single sub-etalon or random combination of sub-etalons is free to be tuned to a particular wavelength corresponding to one of the input channels. This allows for any combination of signals (i.e digital video, data and voice) in a signal broadband channel to be switched to any of several receivers. Wavelength division multiplexing (WDM) is used to combine or separate individual types of signals from a single fiber. Phase-matching coatings are used on the materials within the Fabry-perot gap, thereby enhancing transmission performance of the WDM device. Mechanical techniques are used to widen the Fabry-perot gap beyond a 100-micron LC thickness. The widening permits greatly enhanced spectral discrimination (i.e.
    Type: Application
    Filed: February 2, 2001
    Publication date: October 24, 2002
    Inventors: John Noto, Robert B. Kerr, Hailiang Zhang, William Z. Marder, Anthony C. Warren