Patents by Inventor Xing Long Wang

Xing Long 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).

  • OPTICAL CIRCULATOR
    Publication number: 20020001130
    Abstract: An improved optical circulator transfers light from a first optical port to a second optical port, and from the second port to a third port. The circulator has non-reciprocal polarization rotators, birefringent beam splitters and combiners, and a polarization-dependent light bending device comprising two tapered birefringent plates. The light bending device compensates for an angle between a first light beam emanating from the first port and a second light beam propagating to the third port. The existence of this angle allows the first and third fibers to be coupled to the light beams using a single lens.
    Type: Application
    Filed: February 19, 1999
    Publication date: January 3, 2002
    Inventors: VINCENT AU-YEUNG, QING-DONG GUO, XING LONG WANG
  • Optical circulator
    Patent number: 6331912
    Abstract: An improved optical circulator transfers light from a first optical port to a second optical port, and from the second port to a third port. The circulator has non-reciprocal polarization rotators, birefringent beam splitters and combiners, and a polarization-dependent light bending device comprising two tapered birefringent plates. The light bending device compensates for an angle between a first light beam emanating from the first port and a second light beam propagating to the third port. The existence of this angle allows the first and third fibers to be coupled to the light beams using a single lens.
    Type: Grant
    Filed: February 19, 1999
    Date of Patent: December 18, 2001
    Assignee: U.S.A. Kaifa Technology, Inc.
    Inventors: Vincent Au-Yeung, Qing-Dong Guo, Xing Long Wang