Patents by Inventor Kin Seng Chiang

Kin Seng Chiang 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: 11899255
    Abstract: There is provided a method for fabricating an optical printed circuit board. The method includes preparing a first printed circuit board portion with an array of optical fibers attached thereon, assembling an optical fiber connector with the first printed circuit board portion such that the optical fiber connector is arranged at ends of the array of optical fibers, and attaching one or more second printed circuit board portions to the first printed circuit board portion to form an optical printed circuit board with the optical fiber connector embedded therein. The optical fiber connector includes an engagement mechanism arranged for engagement with an external optical device.
    Type: Grant
    Filed: June 17, 2022
    Date of Patent: February 13, 2024
    Assignee: City University of Hong Kong
    Inventors: Kin Seng Chiang, Wei Jin, Kar Pong Lor, Hau Ping Chan
  • Publication number: 20230408779
    Abstract: There is provided a method for fabricating an optical printed circuit board. The method includes preparing a first printed circuit board portion with an array of optical fibers attached thereon, assembling an optical fiber connector with the first printed circuit board portion such that the optical fiber connector is arranged at ends of the array of optical fibers, and attaching one or more second printed circuit board portions to the first printed circuit board portion to form an optical printed circuit board with the optical fiber connector embedded therein. The optical fiber connector includes an engagement mechanism arranged for engagement with an external optical device.
    Type: Application
    Filed: June 17, 2022
    Publication date: December 21, 2023
    Inventors: Kin Seng Chiang, Wei Jin, Kar Pong Lor, Hau Ping Chan
  • Publication number: 20220206324
    Abstract: A photonic device structure includes: an electro-optical structure including a layer of optical material sandwiched by a pair of electrodes, wherein the layer of optical material is arranged to undergo an electro-optic activity when subjected to a voltage bias across the pair of electrodes; and a cladding layer adjacent to the electro-optical structure.
    Type: Application
    Filed: December 30, 2020
    Publication date: June 30, 2022
    Inventors: Kin Seng Chiang, Jingdong Luo
  • Patent number: 11353772
    Abstract: A photonic device structure includes: an electro-optical structure including a layer of optical material sandwiched by a pair of electrodes, wherein the layer of optical material is arranged to undergo an electro-optic activity when subjected to a voltage bias across the pair of electrodes; and a cladding layer adjacent to the electro-optical structure.
    Type: Grant
    Filed: December 30, 2020
    Date of Patent: June 7, 2022
    Assignee: City University of Hong Kong
    Inventors: Kin Seng Chiang, Jingdong Luo
  • Patent number: 11071199
    Abstract: An optical printed circuit board and its fabrication method. The optical printed circuit board includes an electrical conductor arranged for conducting electric signal, an optical waveguide arranged for transmitting optical signal, and an optical waveguide coupling interface arranged at an end of the optical waveguide. The optical waveguide coupling interface is arranged for engagement with an external optical device to optically couple the external optical device with the optical waveguide. The optical waveguide coupling interface includes a first engagement mechanism with a socket defining a space for receiving with a corresponding plug on the external optical device or a plug arranged to be received in a corresponding socket on the external optical device.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: July 20, 2021
    Assignee: City University of Hong Kong
    Inventors: Kin Seng Chiang, Kar Pong Lor, Wei Jin, Hau Ping Chan
  • Publication number: 20200113045
    Abstract: An optical printed circuit board and its fabrication method. The optical printed circuit board includes an electrical conductor arranged for conducting electric signal, an optical waveguide arranged for transmitting optical signal, and an optical waveguide coupling interface arranged at an end of the optical waveguide. The optical waveguide coupling interface is arranged for engagement with an external optical device to optically couple the external optical device with the optical waveguide. The optical waveguide coupling interface includes a first engagement mechanism with a socket defining a space for receiving with a corresponding plug on the external optical device or a plug arranged to be received in a corresponding socket on the external optical device.
    Type: Application
    Filed: October 9, 2018
    Publication date: April 9, 2020
    Inventors: Kin Seng Chiang, Kar Pong Lor, Wei Jin, Hau Ping Chan
  • Patent number: 9981408
    Abstract: Polymer optical waveguides can be produced by separating the processes into a distinct embossing process and a distinct UV exposure process. Separating the processes can create a more refined product and a more efficient process, thus eliminating the need for special polymer optical waveguide fabrication machinery.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: May 29, 2018
    Assignee: City University of Hong Kong
    Inventors: Wei Jin, Kin Seng Chiang, Hau Ping Andy Chan
  • Publication number: 20160158968
    Abstract: Polymer optical waveguides can be produced by separating the processes into a distinct embossing process and a distinct UV exposure process. Separating the processes can create a more refined product and a more efficient process, thus eliminating the need for special polymer optical waveguide fabrication machinery.
    Type: Application
    Filed: March 24, 2014
    Publication date: June 9, 2016
    Applicant: City University of Hong Kong
    Inventors: Wei Jin, Kin Seng Chiang, Hau Ping Andy Chan
  • Patent number: 7711227
    Abstract: An optical fiber is described in which the cladding is provided with a refractive index that increases in a radially outward direction. In particular embodiments the refractive index of the cladding increases monotonically from a low value to a value close to or higher than the refractive index of the core. Such a fiber can be formed that can be operated in an effective single mode manner or in multimode operation and which is very suitable for use in high-bit-rate communication systems.
    Type: Grant
    Filed: September 15, 2006
    Date of Patent: May 4, 2010
    Assignee: City University of Hong Kong
    Inventors: Kin Seng Chiang, Vipul Rastogi
  • Patent number: 6768851
    Abstract: An optical fiber is described in which a core is surrounded by a cladding having a refractive index that varies periodically in the angular sense around the core. By appropriate design of the cladding it is possible to provide an optical fiber capable of single-mode operation over a wide range of wavelengths with a large effective area.
    Type: Grant
    Filed: March 13, 2002
    Date of Patent: July 27, 2004
    Assignee: City University of Hong Kong
    Inventors: Kin Seng Chiang, Vipul Rastogi
  • Publication number: 20040114892
    Abstract: An optical fiber is described in which the cladding is provided with a refractive index that increases in a radially outward direction. In particular embodiments the refractive index of the cladding increases monotonically from a low value to a value close to or higher Than the refractive index of the core.
    Type: Application
    Filed: December 11, 2002
    Publication date: June 17, 2004
    Inventors: Kin Seng Chiang, Vipul Rastogi
  • Publication number: 20030174984
    Abstract: An optical fiber is described in which a core is surrounded by a cladding having a refractive index that varies periodically in the angular sense around the core. By appropriate design of the cladding it is possible to provide an optical fiber capable of single-mode operation over a wide range of wavelengths with a large effective area.
    Type: Application
    Filed: March 13, 2002
    Publication date: September 18, 2003
    Applicant: City University of Hong Kong
    Inventors: Kin Seng Chiang, Vipul Rastogi