Patents by Inventor Guozhen Liang

Guozhen Liang 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: 11733455
    Abstract: The systems described herein can be used to modulate either the phase, the amplitude, or both of an input light wave using micro-resonators to achieve desired degrees and/or types of modulation.
    Type: Grant
    Filed: April 2, 2020
    Date of Patent: August 22, 2023
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: Guozhen Liang, Heqing Huang, Michal Lipson, Nanfang Yu
  • Publication number: 20220308370
    Abstract: The systems described herein can be used to modulate either the phase, the amplitude, or both of an input light wave using micro-resonators to achieve desired degrees and/or types of modulation.
    Type: Application
    Filed: April 2, 2020
    Publication date: September 29, 2022
    Applicant: THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
    Inventors: Guozhen Liang, Heqing Huang, Michal Lipson, Nanfang Yu
  • Patent number: 11372271
    Abstract: According to embodiments of the present invention, an optical modulator is provided. The optical modulator includes a substrate, and a waveguiding arrangement on the substrate, the waveguiding arrangement having a waveguide, and at least one graphene layer arranged to interact with light propagating in the waveguiding arrangement, wherein the waveguide is designed such that the light interacting with the at least one graphene layer has a maximum intensity overlapping with the at least one graphene layer. According to further embodiments of the present invention, a method for forming the optical modulator, and a method for controlling the optical modulator are also provided.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: June 28, 2022
    Assignee: Nanyang Technological University
    Inventors: Xiaonan Hu, Guozhen Liang, Bo Meng, Qijie Wang
  • Publication number: 20200150465
    Abstract: According to embodiments of the present invention, an optical modulator is provided. The optical modulator includes a substrate, and a waveguiding arrangement on the substrate, the waveguiding arrangement having a waveguide, and at least one graphene layer arranged to interact with light propagating in the waveguiding arrangement, wherein the waveguide is designed such that the light interacting with the at least one graphene layer has a maximum intensity overlapping with the at least one graphene layer. According to further embodiments of the present invention, a method for forming the optical modulator, and a method for controlling the optical modulator are also provided.
    Type: Application
    Filed: June 7, 2018
    Publication date: May 14, 2020
    Inventors: Xiaonan Hu, Guozhen Liang, Bo Meng, Qijie Wang
  • Patent number: 10615575
    Abstract: Embodiments provide a light source having a coherent light generator arrangement configured to generate at least one output light, and a waveguide arrangement optically coupled to the coherent light generator arrangement, the waveguide arrangement including at least one first resonator element and at least one second resonator element arranged in different orientations, wherein the waveguide arrangement is configured to interact with the at least one output light to cause the at least one first resonator element and the at least one second resonator element to emit respective first and second optical signals to co-operatively interact with each other to generate an output optical signal, and wherein the light source is configured to change a polarization characteristic of the output optical signal in response to at least one electrical signal applied to the light source to vary at least one of respective magnitudes of the first and second optical signals relative to each other.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: April 7, 2020
    Assignee: Nanyang Technological University
    Inventors: Guozhen Liang, Qijie Wang
  • Publication number: 20180138661
    Abstract: Embodiments provide a light source having a coherent light generator arrangement configured to generate at least one output light, and a waveguide arrangement optically coupled to the coherent light generator arrangement, the waveguide arrangement including at least one first resonator element and at least one second resonator element arranged in different orientations, wherein the waveguide arrangement is configured to interact with the at least one output light to cause the at least one first resonator element and the at least one second resonator element to emit respective first and second optical signals to co-operatively interact with each other to generate an output optical signal, and wherein the light source is configured to change a polarization characteristic of the output optical signal in response to at least one electrical signal applied to the light source to vary at least one of respective magnitudes of the first and second optical signals relative to each other.
    Type: Application
    Filed: November 2, 2017
    Publication date: May 17, 2018
    Inventors: Guozhen Liang, Qijie Wang
  • Patent number: 9819145
    Abstract: According to various embodiments, there is provided a layer arrangement including a graphene layer; a gating electrode layer configured to provide a tuning voltage to the graphene layer; a laser layer configured to provide an electromagnetic wave; and a concentric-circular grating layer configured to couple the electromagnetic wave to the graphene layer.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: November 14, 2017
    Assignee: Nanyang Technological University
    Inventors: Guozhen Liang, Qijie Wang
  • Publication number: 20160141835
    Abstract: According to various embodiments, there is provided a layer arrangement including a graphene layer; a gating electrode layer configured to provide a tuning voltage to the graphene layer; a laser layer configured to provide an electromagnetic wave; and a concentric-circular grating layer configured to couple the electromagnetic wave to the graphene layer.
    Type: Application
    Filed: October 15, 2015
    Publication date: May 19, 2016
    Inventors: Guozhen Liang, Qijie Wang
  • Patent number: D899706
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: October 20, 2020
    Assignee: GUANGZHOU CHARM SHINE INTERNATIONAL ECOMMERCE CO. LTD
    Inventors: Shangjie Liang, Guozhen Liang
  • Patent number: D900411
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: October 27, 2020
    Assignee: GUANGZHOU CHARM SHINE INTERNATIONAL ECOMMERCE CO. LTD
    Inventors: Shangjie Liang, Guozhen Liang