Patents by Inventor Xiaoguang Sun

Xiaoguang Sun 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).

  • Publication number: 20240103213
    Abstract: A multi-core optical fiber comprises at least two (2) helical cores. When the multi-core optical fiber is bent, such that it has a bend length (L) and a bend radius (R), each core experiences a different strain, thereby resulting in an effective optical length difference (?l) between the cores. In the present disclosure, the helical cores have a pitch (P) that reduces ?l/L to a value that is less than 5·10?6 (i.e., ?l/L<5·10?6).
    Type: Application
    Filed: January 24, 2022
    Publication date: March 28, 2024
    Applicant: OFS Fitel, LLC
    Inventors: Adam Hokansson, Jie Li, Xiaoguang Sun
  • Publication number: 20230275628
    Abstract: Embodiments of this application provide antenna switching methods and apparatuses. In an implementation, a first communication device determines a first antenna identifier based on air interface transmission information, the first communication device sends the first antenna identifier to a digital switch, and the digital switch switches from a second switch state to a first switch state based on the first antenna identifier, where the first switch state indicates that a second communication device communicates with the first antenna within a first time unit, and the second switch state indicates that the second communication device communicates with a second antenna within a second time unit.
    Type: Application
    Filed: May 4, 2023
    Publication date: August 31, 2023
    Inventors: Chenhui GE, Linlin WANG, Liang LI, Haizheng TANG, Jie LIN, Jiachong ZHOU, Xiaoguang SUN, Shiguo GUAN
  • Publication number: 20230225078
    Abstract: The present disclosure relates to heat dissipation apparatuses. In an example, a node includes a structural module, a circuit board, a liquid pipe, and a liquid leakage monitoring apparatus. The circuit board is securely mounted on the structural module, and an electronic component including a chip is disposed on the circuit board. The liquid pipe is disposed on the circuit board, and is configured to dissipate heat for the electronic component on the circuit board. The liquid leakage monitoring apparatus includes a drainage pipe sleeved outside the liquid pipe. There is a specific gap between the drainage pipe and the liquid pipe. In response to at least that leakage occurs in the liquid pipe, leaked coolant flows in the drainage pipe.
    Type: Application
    Filed: March 17, 2023
    Publication date: July 13, 2023
    Inventors: Xiaoguang SUN, Junen GAO, Huan PENG
  • Publication number: 20230161088
    Abstract: An optical construction includes a lens film and a mask layer. The lens film includes an outermost structured first major surface and an opposing outermost substantially planar second major surface. The first major surface includes a plurality of microlenses arranged along orthogonal first and second directions. The mask layer is disposed on the second major surface of the lens film and includes a first layer including a first metal, a second layer including a second metal and a third layer disposed between the first and second layers. For substantially normally incident light, each of the first and second layers has an optical reflectance of greater than about 5%, the third layer has an optical transmittance of greater than about 70%, and the mask layer has an optical reflectance of less than about 20%. The mask layer defines a plurality of through openings aligned to the microlenses in a one-to-one correspondence.
    Type: Application
    Filed: March 17, 2021
    Publication date: May 25, 2023
    Inventors: Xiaoguang Sun, Zhaohui Yang
  • Publication number: 20220334007
    Abstract: Disclosed herein is a method for measuring temperature via distributed temperature sensing comprising transmitting light through a fiber optic cable; detecting backscattered light in the fiber optic cable, wherein the backscattered light comprises an anti-Stokes band and a Stokes band; calculating a ratio between an intensity of the anti-Stokes band and an intensity of the Stokes band; and using the calculated ratio to determine a temperature being sensed in the fiber optic cable; wherein the fiber optic cable comprises, from the center to the periphery; a central core having a refractive index that decreases progressively from a center of the central core to an edge of the core, wherein the refractive index follows an alpha profile; wherein a bandwidth-length product of the multimode optical fiber has a value greater than 2000 MHz-km at 1550 nm.
    Type: Application
    Filed: June 30, 2022
    Publication date: October 20, 2022
    Applicant: OFS Fitel, LLC
    Inventors: David D. Braganza, Jie Li, Xiaoguang Sun
  • Patent number: 11473982
    Abstract: Disclosed herein is a method for measuring temperature via distributed temperature sensing comprising transmitting light through a fiber optic cable; detecting backscattered light in the fiber optic cable, wherein the backscattered light comprises an anti-Stokes band and a Stokes band; calculating a ratio between an intensity of the anti-Stokes band and an intensity of the Stokes band; and using the calculated ratio to determine a temperature being sensed in the fiber optic cable; wherein the fiber optic cable comprises, from the center to the periphery; a central core having a refractive index that decreases progressively from a center of the central core to an edge of the core, wherein the refractive index follows an alpha profile; wherein a bandwidth-length product of the multimode optical fiber has a value greater than 2000 MHz-km at 1550 nm.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: October 18, 2022
    Assignee: OFS FITEL, LLC
    Inventors: David D Braganza, Jie Li, Xiaoguang Sun
  • Patent number: 11336073
    Abstract: Disclosed herein is a method comprising injecting light of a first wavelength ?1 into a wavelength division multiplexer; injecting light of a second wavelength ?2 into the wavelength division multiplexer; combining the light of the first wavelength ?1 and the light of the second wavelength ?2 in the wavelength division multiplexer to produce light of a third wavelength ?3; and reflecting the light of the third wavelength ?3 in a dual-Brillouin peak optical fiber that is in communication with the wavelength divisional multiplexer; wherein the dual-Brillouin peak optical fiber has at least two Brillouin peaks, such that an amplitude A1 of at least one of said Brillouin peaks is within 50% to 150% of an amplitude A2 of another Brillouin peak 0.5A2?A1?1.5A2; wherein the dual-Brillouin peak optical fiber generates a Brillouin dynamic grating that reflects an improved back-reflected Brillouin signal of the combined light.
    Type: Grant
    Filed: November 29, 2019
    Date of Patent: May 17, 2022
    Assignee: OFS FITEL, LLC
    Inventors: Kyle R Bedard, Jie Li, Xiaoguang Sun, Man F Yan
  • Patent number: 11230158
    Abstract: A phase-change energy storage air duct of an automobile air conditioning system. A phase-change energy storage unit (2) is configured inside an air duct (1) of an air conditioning system. By means of phase-change heat absorption or release, residual heat in the air is absorbed, and the heat is released to air with a lower temperature, so that energy is recycled to achieve energy saving. The temperature of air entering a room or a carriage is kept stable, and thus the user experience is improved. When the air conditioning system fails, the phase-change energy storage unit (2) can still utilize stored cooling capacity or heat to cool down or heat up air in the air duct, so that a supply of air can be kept stable for a period of time, and thus the user experience is improved. The present application also relates to an automobile air conditioning system.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: January 25, 2022
    Assignee: CRRC QINGDAO SIFANG CO., LTD.
    Inventors: Shaoqing Liu, Jianying Liang, Peng Lin, Dawei Chen, Weibin Wang, Xiaoguang Sun, Chuanying Li, Yundong Han, Shuanbao Yao, Jinyu Zhang
  • Publication number: 20210410336
    Abstract: The cabinet includes a body and a heat dissipation apparatus. A plurality of installation slots for servers to enter along a preset installation direction are disposed on the body. The heat dissipation apparatus is configured to perform heat dissipation on devices of the servers, the heat dissipation apparatus is disposed on at least one side of the body along the installation direction, and the heat dissipation apparatus is connected to the devices of the servers. In this way, heat dissipation is performed on each server in the body, and space reserved between two adjacent rows of cabinets can be effectively used to reduce occupation of space in a left-right direction or an up-down direction in the body, thereby reducing limitation on a size of the cabinet and a size of a device in the cabinet.
    Type: Application
    Filed: September 14, 2021
    Publication date: December 30, 2021
    Inventors: Xidong YAO, Xiaoguang SUN, Dongming LU
  • Patent number: 10756306
    Abstract: A nanostructured article having a first layer with a nanostructured surface is described. The nanostructured surface includes a plurality of pillars extending from a base surface of the first layer. The pillars have an average height greater than an average lateral dimension of the pillars. An average center-to-center spacing between pillars is no more than 2000 nm. The average lateral dimension is no less than 50 nm. Each pillar in the plurality of pillars has at least a lower portion and an upper portion where the lower portion is between the upper portion and the base surface, and the upper and lower portions have differing compositions. The nanostructured article includes a second layer disposed over the plurality of pillars and extending continuously to the base surface.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: August 25, 2020
    Assignee: 3M Innovative Properties Company
    Inventors: Nicholas C. Erickson, Moses M. David, Xiaoguang Sun, Manoj Nirmal, Haeen Sykora, Hui Luo, Samuel J. Carpenter, Jilliann M. Nelson, Justin P. Meyer, Bert T. Chien, David J. Rowe, Robert L. Brott, David G. Freier, Hyacinth L. Lechuga
  • Publication number: 20200176947
    Abstract: Disclosed herein is a method comprising injecting light of a first wavelength ?1 into a wavelength division multiplexer; injecting light of a second wavelength ?2 into the wavelength division multiplexer; combining the light of the first wavelength ?1 and the light of the second wavelength ?2 in the wavelength division multiplexer to produce light of a third wavelength ?3; and reflecting the light of the third wavelength ?3 in a dual-Brillouin peak optical fiber that is in communication with the wavelength divisional multiplexer; wherein the dual-Brillouin peak optical fiber has at least two Brillouin peaks, such that an amplitude A1 of at least one of said Brillouin peaks is within 50% to 150% of an amplitude A2 of another Brillouin peak 0.5A2?A1?1.5A2; wherein the dual-Brillouin peak optical fiber generates a Brillouin dynamic grating that reflects an improved back-reflected Brillouin signal of the combined light.
    Type: Application
    Filed: November 29, 2019
    Publication date: June 4, 2020
    Applicant: OFS FITEL, LLC
    Inventors: Kyle R. Bedard, Jie Li, Xiaoguang Sun, Man F. Yan
  • Patent number: 10627010
    Abstract: A method for isolating a water valve for repair or replacement includes closing the valve and thereafter replacing an outlet pipe with an adapter pipe. An expandable plug is used to seal the adapter pipe, after which the valve is opened and an air tube having a bladder on an end thereof is inserted through the valve and expanded to seal the inlet pipe. Thereafter, the stem assembly of the valve or the entire valve itself may be removed for simple replacement of the sealing washer or total replacement of the valve. The apparatus for practicing the method, and including the expandable plug, inflatable bladder, and necessary tubing, plug actuator, and air valve are presented.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: April 21, 2020
    Inventor: William Xiaoguang Sun
  • Publication number: 20200032923
    Abstract: A method for isolating a water valve for repair or replacement includes closing the valve and thereafter replacing an outlet pipe with an adapter pipe. An expandable plug is used to seal the adapter pipe, after which the valve is opened and an air tube having a bladder on an end thereof is inserted through the valve and expanded to seal the inlet pipe. Thereafter, the stem assembly of the valve or the entire valve itself may be removed for simple replacement of the sealing washer or total replacement of the valve. The apparatus for practicing the method, and including the expandable plug, inflatable bladder, and necessary tubing, plug actuator, and air valve are presented.
    Type: Application
    Filed: July 30, 2018
    Publication date: January 30, 2020
    Inventor: William Xiaoguang Sun
  • Publication number: 20190386251
    Abstract: A nanostructured article having a first layer with a nanostructured surface is described. The nanostructured surface includes a plurality of pillars extending from a base surface of the first layer. The pillars have an average height greater than an average lateral dimension of the pillars. An average center-to-center spacing between pillars is no more than 2000 nm. The average lateral dimension is no less than 50 nm. Each pillar in the plurality of pillars has at least a lower portion and an upper portion where the lower portion is between the upper portion and the base surface, and the upper and lower portions have differing compositions. The nanostructured article includes a second layer disposed over the plurality of pillars and extending continuously to the base surface.
    Type: Application
    Filed: October 17, 2017
    Publication date: December 19, 2019
    Inventors: Nicholas C. Erickson, Moses M. David, Xiaoguang Sun, Manoj Nirmal, Haeen Sykora, Hui Luo, Samuel J. Carpenter, Jilliann M. Nelson, Justin P. Meyer, Bert T. Chien, David J. Rowe, Robert L. Brott, David G. Freier, Hyacinth L. Lechuga
  • Patent number: 10401563
    Abstract: Disclosed herein is an optical fiber comprising a plurality of dopant concentration profiles in a core of the optical fiber; where the first dopant concentration and the second dopant concentration are each varied in a stepwise manner and wherein a ratio of the first dopant concentration to the second dopant concentration is operative to result in an interaction of a fundamental optical mode at a given wavelength with a plurality of acoustic modes thereby increasing a ratio of Brillouin Scattering intensity ratio of secondary, tertiary or quarternary peak relative to a Brillouin Scattering intensity of a primary peak to be greater than 0.4 in a Brillouin Scattering spectrum.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: September 3, 2019
    Assignee: OFS FITEL, LLC
    Inventors: Kyle Bedard, Robert S Dyer, Jie Li, Xiaoguang Sun
  • Patent number: 10386247
    Abstract: Embodiments are directed to a distributed temperature sensing system. The system includes a first fiber optic cable and a second fiber optic cable. A first coupler is coupled to the first fiber optic cable. A second coupler is coupled to the second fiber optic cable. An optical isolator coupled between the first coupler and the second coupler to remove a Stokes signal in order to increase the range of the distributed temperature sensing system.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: August 20, 2019
    Assignee: OFS FITEL, LLC
    Inventor: Xiaoguang Sun
  • Publication number: 20190217680
    Abstract: A phase-change energy storage air duct of an automobile air conditioning system. A phase-change energy storage unit (2) is configured inside an air duct (1) of an air conditioning system. By means of phase-change heat absorption or release, residual heat in the air is absorbed, and the heat is released to air with a lower temperature, so that energy is recycled to achieve energy saving. The temperature of air entering a room or a carriage is kept stable, and thus the user experience is improved. When the air conditioning system fails, the phase-change energy storage unit (2) can still utilize stored cooling capacity or heat to cool down or heat up air in the air duct, so that a supply of air can be kept stable for a period of time, and thus the user experience is improved. The present application also relates to an automobile air conditioning system.
    Type: Application
    Filed: August 30, 2017
    Publication date: July 18, 2019
    Inventors: Shaoqing LIU, Jianying LIANG, Peng LIN, Dawei CHEN, Welbin WANG, Xiaoguang SUN, Chuanying LI, Yundong HAN, Shuanbao YAO, Jinyu ZHANG
  • Publication number: 20190187367
    Abstract: Disclosed herein is an optical fiber comprising a plurality of dopant concentration profiles in a core of the optical fiber; where the first dopant concentration and the second dopant concentration are each varied in a stepwise manner and wherein a ratio of the first dopant concentration to the second dopant concentration is operative to result in an interaction of a fundamental optical mode at a given wavelength with a plurality of acoustic modes thereby increasing a ratio of Brillouin Scattering intensity ratio of secondary, tertiary or quarternary peak relative to a Brillouin Scattering intensity of a primary peak to be greater than 0.4 in a Brillouin Scattering spectrum.
    Type: Application
    Filed: September 12, 2018
    Publication date: June 20, 2019
    Applicant: OFS Fitel, LLC
    Inventors: Kyle Bedard, Robert S Dyer, Jie Li, Xiaoguang Sun
  • Publication number: 20180252596
    Abstract: Disclosed herein is a method for measuring temperature via distributed temperature sensing comprising transmitting light through a fiber optic cable; detecting backscattered light in the fiber optic cable, wherein the backscattered light comprises an anti-Stokes band and a Stokes band; calculating a ratio between an intensity of the anti-Stokes band and an intensity of the Stokes band; and using the calculated ratio to determine a temperature being sensed in the fiber optic cable; wherein the fiber optic cable comprises, from the center to the periphery; a central core having a refractive index that decreases progressively from a center of the central core to an edge of the core, wherein the refractive index follows an alpha profile; wherein a bandwidth-length product of the multimode optical fiber has a value greater than 2000 MHz-km at 1550 nm.
    Type: Application
    Filed: March 1, 2018
    Publication date: September 6, 2018
    Applicant: OFS Fitel, LLC
    Inventors: David D. Braganza, Jie Li, Xiaoguang Sun
  • Patent number: 10035915
    Abstract: Disclosed herein is a composition comprising 65 to 95 weight percent of a fluorinated monofunctional monomer; 5 to 35 weight percent of a fluorinated multifunctional monomer; and 0.5 to 3 weight percent of a silane coupling agent; where all weight percents are based on the total weight of the composition; where the fluorinated monofunctional monomer and the fluorinated multifunctional monomer are devoid of any trifunctional fluorocarbon moieties when they have 6 or more fluorocarbon repeat units; where the fluorocarbon repeat units are CF2 or CF moieties; and where a crosslinked composition has a shore D hardness of 56 to 85 and has a refractive index (RI) that meets the limitation of the equation RI?1.368+10.8/X, where X denotes wavelength in nanometers.
    Type: Grant
    Filed: October 15, 2014
    Date of Patent: July 31, 2018
    Assignee: OFS FITEL, LLC
    Inventors: Xiaoguang Sun, Debra A Simoff, Andrei A Stolov, Adam Hokansson, Natalia Reyngold