Patents by Inventor Fuquan Huang

Fuquan Huang 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 isolator device
    Patent number: 7782532
    Abstract: An optical isolator includes a birefringent material and a Faraday rotator. The birefringent material receives a forward light propagating in a forward direction and a backward light propagating opposite to the forward direction. The birefringent material has an optical axis, wherein the forward light has a first polarization aligned perpendicular to the optical axis and is configured to pass the first birefringent material substantially along the forward direction. At least a portion of the backward light has a second polarization not perpendicular to the optical axis. The first birefringent material can displace the backward light to form a first displaced backward light. A Faraday rotator can rotate the forward light, and the backward light or the first displaced backward light by a same predetermined angle along the rotation direction.
    Type: Grant
    Filed: May 13, 2008
    Date of Patent: August 24, 2010
    Assignee: Photop Technologies, Inc.
    Inventors: Li Wu, Xianghua Shi, Zan Gong, Jiwu Ling, Zhaoyang Sun, Xiangtong Yang, Yunbin Xu, Lei Lin, Fuquan Huang
  • OPTICAL ISOLATOR DEVICE
    Publication number: 20090046347
    Abstract: An optical isolator includes a birefringent material and a Faraday rotator. The birefringent material receives a forward light propagating in a forward direction and a backward light propagating opposite to the forward direction. The birefringent material has an optical axis, wherein the forward light has a first polarization aligned perpendicular to the optical axis and is configured to pass the first birefringent material substantially along the forward direction. At least a portion of the backward light has a second polarization not perpendicular to the optical axis. The first birefringent material can displace the backward light to form a first displaced backward light. A Faraday rotator can rotate the forward light, and the backward light or the first displaced backward light by a same predetermined angle along the rotation direction.
    Type: Application
    Filed: May 13, 2008
    Publication date: February 19, 2009
    Inventors: Li Wu, Xianghua Shi, Zan Gong, Jiwu Ling, Zhaoyang Sun, Xiangtong Yang, Yunbin Xu, Lei Lin, Fuquan Huang