Patents by Inventor Rong Li Zhu

Rong Li Zhu 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: 6580558
    Abstract: An optical isolator includes a first pigtail assembly, a first collimating lens aligned with the first pigtail assembly, an optical rotator assembly, an adjustable assembly aligned with the rotator assembly, and a second pigtail assembly having a ferrule and a second optical fiber with an end attached within the ferrule. The rotator assembly includes a first birefringent wedge, an optical rotator and a magnet. The adjustable assembly includes a second birefringent wedge, a second collimating lens, and a holder holding at least a portion of the second birefringent wedge and at least a portion of the second collimating lens therein. The magnet of the rotator assembly encloses the first birefringent wedge and the rotator. The rotator is positioned between the first and second birefringent wedges. The adjustable assembly is adjustable relative to the rotator assembly. This achieves precise positional relationships among the rotator and the first and second birefringent wedges.
    Type: Grant
    Filed: April 27, 2001
    Date of Patent: June 17, 2003
    Assignee: Hon Hai Precision Ind. Co., Ltd.
    Inventors: Rong Li Zhu, Youfu Shao
  • Publication number: 20030031395
    Abstract: A high isolation gain flattening filter component includes the optical isolator with the built-in gain flattening filter (GFF) component which is disposed between the isolator core and one of the collimators wherein said isolator core includes a pair of birefringent crystals with therebetween a Faraday rotator together enclosed in a magnetic ring.
    Type: Application
    Filed: August 10, 2001
    Publication date: February 13, 2003
    Inventors: Youfu Shao, Sie Poon Chang, Rong Li Zhu
  • Publication number: 20020159149
    Abstract: An optical isolator includes a first pigtail assembly, a first collimating lens aligned with the first pigtail assembly, an optical rotator assembly, an adjustable assembly aligned with the rotator assembly, and a second pigtail assembly having a ferrule and a second optical fiber with an end attached within the ferrule. The rotator assembly includes a first birefringent wedge, an optical rotator and a magnet. The adjustable assembly includes a second birefringent wedge, a second collimating lens, and a holder holding at least a portion of the second birefringent wedge and at least a portion of the second collimating lens therein. The magnet of the rotator assembly encloses the first birefringent wedge and the rotator. The rotator is positioned between the first and second birefringent wedges. The adjustable assembly is adjustable relative to the rotator assembly. This achieves precise positional relationships among the rotator and the first and second birefringent wedges.
    Type: Application
    Filed: April 27, 2001
    Publication date: October 31, 2002
    Inventors: Rong Li Zhu, Youfu Shao