Patents by Inventor Xiao Shen

Xiao Shen 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: 20210288898
    Abstract: The present disclosure is directed to determining bandwidth capacity in a WAN path and includes one or more processors and one or more computer-readable non-transitory storage media comprising instructions that, when executed by the one or more processors, cause one or more components of the system to perform operations including, selecting a SD-WAN path for which to determine bandwidth capacity, wherein the path is associated with a Quality of Service (QoS) shaper having a pre-determined shaper rate, incrementally increasing a test load applied on the selected path, wherein the test load is applied concurrently with existing user traffic, calculating a performance score for the path after each increase in the test load, determining a performance of the path based on the calculated performance score, and updating the shaper rate of the QoS shaper based on the performance of the path.
    Type: Application
    Filed: March 16, 2020
    Publication date: September 16, 2021
    Inventors: Changhong Shen, Hongbo Xia, Xiao-Rong Wang, Yu Zhang
  • Patent number: 10768365
    Abstract: A method for fabricating a photonic integrated circuit (PIC) comprises providing a silicon-on-insulator (SOI) wafer comprising an insulator layer disposed between a base semiconductor layer and a SOI layer, wherein the SOI layer comprises a waveguide, providing at least one slot within the SOI layer, wherein the at least one slot is positioned on the same or opposite sides of the waveguide, and wherein the at least one slot is positioned at a predetermined distance away from the waveguide, and removing a portion of the insulator layer to form an etched-out portion of the insulator layer, wherein the etched-out portion is positioned directly beneath the waveguide, and wherein a width of the etched-out portion is at least the width of the waveguide.
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: September 8, 2020
    Assignee: Futurewei Technologies, Inc.
    Inventors: Dawei Zheng, Ge Yi, Li Yang, Xiao Shen
  • Patent number: 10641966
    Abstract: A free space coupling system comprising a waveguide horizontally positioned on an integrated circuit, and a silicon housing coupled to the waveguide, wherein the silicon housing comprises a reflective surface, a first port, wherein the first port is configured to receive light from an optic source positioned substantially parallel to the waveguide at a coupling point, and a second port, wherein the second port is oriented at about ninety degrees with respect to the first port, and wherein the second port is aligned with a grating port on the waveguide.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: May 5, 2020
    Assignee: Futurewei Technologies, Inc.
    Inventors: Rongsheng Miao, Zongrong Liu, Qianfan Xu, Xiao Shen
  • Publication number: 20200127198
    Abstract: A ReRAM device manufactured using 2-D Si2Te3 (silicon telluride) nanowires or nanoplates. The Si2Te3 nanowires exhibit a unique reversible resistance switching behavior driven by an applied electrical potential, which leads to switching of the NWs from a high-resistance state (HRS) to a low-resistance state (LRS). This switched LRS is highly stable unless the opposite potential is applied to switch the resistance back. This provides a new class of resistive switching based on semiconductor rather than dielectric materials. In several embodiments, the polarity of the initially applied potential along the Si2Te3 nanowires defines the switch “on” and “off” directions, which become permanent once set.
    Type: Application
    Filed: October 18, 2019
    Publication date: April 23, 2020
    Inventors: JINGBIAO CUI, KEYUE WU, JIYANG CHEN, XIAO SHEN
  • Publication number: 20200123197
    Abstract: Method of making a cross metathesis product, the method comprising at least step (X) or step (Y): (X) reacting in a cross metathesis reaction a first compound comprising a terminal olefinic group with a second compound comprising a terminal olefinic group, wherein the first and the second compound may be identical or may be different from one another; or (Y) reacting in a ring-closing metathesis reaction two terminal olefinic groups which are comprised in a third compound; wherein the reacting in step (X) or step (Y) is performed in the presence of a ruthenium carbene complex comprising a [Ru?C]-moiety and an internal olefin.
    Type: Application
    Filed: July 20, 2018
    Publication date: April 23, 2020
    Inventors: Amir H. Hoveyda, Chaofan Xu, Xiao Shen
  • Publication number: 20200040334
    Abstract: (57) Abstract: The present application provides methods, compositions, delivery systems, ami kits for modifying a target nucleic acid using an Argonaute (Ago) and a single-stranded guide DNA. In some embodiments, methods of gene editing in a cell, such as a mammalian cell, arc provided.
    Type: Application
    Filed: December 20, 2016
    Publication date: February 6, 2020
    Inventors: Xiao SHEN, Chunyu HAN
  • Patent number: 10551640
    Abstract: An apparatus comprising a polarization beam splitter optically coupled to a first light path and a second light path and configured to receive a CW light having a plurality of wavelengths, forward a first light beam of the CW light along the first light path, and forward a second light beam of the CW light along the second light path. A first multiplexer coupled to the first light path and configured to de-multiplex the first light beam into a first plurality of channels each corresponding to one of the plurality of wavelengths. A second multiplexer coupled to the second light path and configured to de-multiplex the second light beam into a second plurality of channels each corresponding to one of the plurality of wavelengths. A modulator coupled to the first multiplexer and the second multiplexer and configured to modulate the first plurality of channels and the second plurality of channels.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: February 4, 2020
    Assignee: Futurewei Technologies, Inc.
    Inventors: Yangjing Wen, Yan Cui, Xiao Shen, Yu Sheng Bai
  • Patent number: 10539744
    Abstract: A gapless optical mode converter comprising a fiber holder configured to receive and hold an optical transmission line, a first glass block coupled via an optical adhesive at a first side to the fiber holder, a lens coupled via the optical adhesive at a first side to a second side of the first glass block, and a holder configured to hold the fiber holder, the first glass block, and the lens.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: January 21, 2020
    Assignee: Futurewei Technologies, Inc.
    Inventors: Rongsheng Miao, Zongrong Liu, Xueyan Zheng, Xiao Shen
  • Patent number: 10498458
    Abstract: An optical modulator for generating quadrature amplitude modulation (nQAM) and phase-shift keying (nPSK) signals with tunable modulation efficiency. The modulator includes a controlling circuit for adjusting the modulation efficiency or modulation depth of the modulator by controlling the direct current (DC) bias.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: December 3, 2019
    Assignee: Futurewei Technologies, Inc.
    Inventors: Xueyan Zheng, Yu Sheng Bai, Xiao Shen, Yangjing Wen
  • Publication number: 20190351374
    Abstract: The present disclosure describes membrane compositions and methods for preparing membrane compositions. In particular, the methods employ a layer-by-layer approach to membrane preparation. The membrane compositions provide significantly enhanced membrane performance over existing commercial membranes, particularly in terms of permeability and selectivity.
    Type: Application
    Filed: May 16, 2019
    Publication date: November 21, 2019
    Inventors: Manish Kumar, Yue-Xiao Shen, Woochul Song, Tingwei Ren
  • Publication number: 20190293863
    Abstract: A method for fabricating a photonic integrated circuit (PIC) comprises providing a silicon-on-insulator (SOI) wafer comprising an insulator layer disposed between a base semiconductor layer and a SOI layer, wherein the SOI layer comprises a waveguide, providing at least one slot within the SOI layer, wherein the at least one slot is positioned on the same or opposite sides of the waveguide, and wherein the at least one slot is positioned at a predetermined distance away from the waveguide, and removing a portion of the insulator layer to form an etched-out portion of the insulator layer, wherein the etched-out portion is positioned directly beneath the waveguide, and wherein a width of the etched-out portion is at least the width of the waveguide
    Type: Application
    Filed: March 21, 2018
    Publication date: September 26, 2019
    Inventors: Dawei Zheng, Ge Yi, Li Yang, Xiao Shen
  • Patent number: 10374716
    Abstract: An optical transceiver comprising an optical signal input, a first modulation section coupled to the optical signal input, a second modulation section coupled to the optical signal input and positioned in serial with the first modulation section, wherein the first modulation section comprises a first digital electrical signal input, a first digital driver coupled to the first digital electrical signal input, and a first modulator coupled to the first digital driver, and wherein the second modulation section comprises a second digital electrical signal input, a second digital driver coupled to the second digital electrical signal input, and a second modulator coupled to the second digital driver, and an optical signal output coupled to the first modulation section and the second modulation section.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: August 6, 2019
    Assignee: Futurewei Technologies, Inc.
    Inventors: Xueyan Zheng, Dawei Zheng, Xiao Shen, Morgan Chen, Hongbing Lei
  • Patent number: 10268056
    Abstract: An optical modulator comprises a silicon substrate, a buried oxide (BOX) layer disposed on top of the silicon substrate, and a ridge waveguide disposed on top of the BOX layer and comprising a first n-type silicon (n-Si) slab, a first gate oxide layer coupled to the first n-Si slab, a first p-type silicon (p-Si) slab coupled to the first gate oxide layer, and a light propagation path that travels sequentially through the first n-Si slab, the first gate oxide layer, and the first p-Si slab.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: April 23, 2019
    Assignee: Futurewei Technologies, Inc.
    Inventors: Dawei Zheng, Hongbing Lei, Qianfan Xu, Xiao Shen, Yu Sheng Bai
  • Publication number: 20190048361
    Abstract: The disclosure relates to an expression method of a Haemocoagulase Acutus (Halase) recombinant protein. The method includes the following steps: (1) optimizing a halase gene; (2) performing Polymerase Chain Reaction (PCR) amplification on an optimized halase gene; (3) constructing an Agkis-pMCX expression vector, transforming plasmids to competent cells of an escherichia coli for amplification, screening in an Amp-resistant manner for positive cloning, sequencing and extracting recombinant plasmids with correct sequencing; (4) transfecting recombinant plasmids to CHO cells; and (5) expressing the recombinant protein and identifying. According to the expression method, a recombinant halase is expressed first using the CHO cells cultured in a serum-free suspension manner; and by utilizing a bioengineering means, the actual production problems of insufficient raw material sources and unstable quality of a snake venom product are solved successfully.
    Type: Application
    Filed: October 30, 2018
    Publication date: February 14, 2019
    Inventors: Qin Deng, Xiao Shen, Weiwei Su, Zhong Wu, Wei Peng, Yonggang Wang
  • Patent number: 10133098
    Abstract: A metal-oxide semiconductor (MOS) optical modulator including a doped semiconductor layer having a waveguide structure, a dielectric layer disposed over the waveguide structure of the doped semiconductor layer, a gate region disposed over the dielectric layer, wherein the gate region comprises a transparent electrically conductive material having a refractive index lower than that of silicon, and a metal contact disposed over the gate region. The metal contact, the gate region, and the waveguide structure of the doped semiconductor layer may be vertically aligned with each other.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: November 20, 2018
    Assignee: Futurewei Technologies, Inc.
    Inventors: Hongmin Chen, Qianfan Xu, Li Yang, Xiao Shen, Dawei Zheng, Yusheng Bai, Hongbing Lei, Eric Dudley
  • Patent number: 10120135
    Abstract: An apparatus comprises a substrate comprising a silicon dioxide (SiO2) material disposed on top of the substrate, a silicon waveguide comprising a first adiabatic tapering and enclosed in the silicon dioxide material, and a low-index waveguide disposed on top of the substrate and adjacent to the first adiabatic tapering. A mode converter fabrication method comprises obtaining a mode converter comprising a substrate, a silicon waveguide disposed on the substrate and comprising a sidewall and a first adiabatic tapering, and a hard mask disposed on the silicon waveguide and comprising a silicon dioxide layer, wherein the hard mask does not cover the sidewall, and oxidizing the silicon waveguide and the hard mask, wherein oxidizing the silicon waveguide and the hard mask encloses the silicon waveguide within the silicon dioxide layer.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: November 6, 2018
    Assignee: Futurewei Technologies, Inc.
    Inventors: Li Yang, Huapu Pan, Qianfan Xu, Dawei Zheng, Xiao Shen
  • Patent number: 10097277
    Abstract: An apparatus comprises: a first input tap; a first optical modulator coupled to the first input tap; a first output tap coupled to the first optical modulator so that the first optical modulator is positioned between the first input tap and the first output tap; and a controller indirectly coupled to the first input tap and the first output tap.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: October 9, 2018
    Assignee: Futurewei Technologies, Inc.
    Inventors: Xueyan Zheng, Jianying Zhou, Xiao Shen, Chunlei Liao, Hongbing Lei, Hongmin Chen, Yu Sheng Bai
  • Patent number: 10042190
    Abstract: A Dual Parallel (DP)-Inphase/Quadrature (I/Q) Mach-Zehnder Modulator (MZM) bias controller configured to generate a pair of orthogonal dither signals; multiply the pair of dither signals to create a second order orthogonal dither signal; and lock an Inphase (I) I MZM of a DP-I/Q MZM to a value of a corresponding I component of a transmission signal by applying the pair of orthogonal dither signal to a Quadrature (Q) MZM and a Phase (P) MZM of the DP-I/Q MZM; applying an I bias signal to the I MZM of the DP-I/Q MZM; detecting an output of the DP-I/Q MZM; and determining an I error signal in the output of the I MZM of the DP-I/Q MZM based on the product of second order dither signal and the output of the DP-I/Q MZM.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: August 7, 2018
    Assignee: Futurewei Technologies, Inc.
    Inventors: Tiangong Liu, Hongbing Lei, Xiao Shen
  • Publication number: 20180143460
    Abstract: An apparatus comprising a polarization beam splitter optically coupled to a first light path and a second light path and configured to receive a CW light having a plurality of wavelengths, forward a first light beam of the CW light along the first light path, and forward a second light beam of the CW light along the second light path. A first multiplexer coupled to the first light path and configured to de-multiplex the first light beam into a first plurality of channels each corresponding to one of the plurality of wavelengths. A second multiplexer coupled to the second light path and configured to de-multiplex the second light beam into a second plurality of channels each corresponding to one of the plurality of wavelengths. A modulator coupled to the first multiplexer and the second multiplexer and configured to modulate the first plurality of channels and the second plurality of channels.
    Type: Application
    Filed: November 21, 2016
    Publication date: May 24, 2018
    Inventors: Yangjing Wen, Yan Cui, Xiao Shen, Yu Sheng Bai
  • Patent number: 9974163
    Abstract: A method comprising coupling a circuit to an opto-electronic package via an anisotropic conductive film (ACF), wherein the opto-electronic package is configured to communicate electrical signals via the coupling at a maximum frequency of about 10 gigahertz (GHz) to about 40 GHz. An apparatus comprising, an opto-electronic package comprising a plurality of first electrodes, and a circuit comprising a plurality of second electrodes, wherein at least one of the first electrodes is coupled to at least one of the second electrodes via an ACF, and wherein the opto-electronic package is configured to communicate electrical signals via the coupling at a maximum frequency of about 10 GHz to about 40 GHz.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: May 15, 2018
    Assignee: FUTUREWEI TECHNOLOGIES, INC.
    Inventors: Morgan Chen, Rongsheng Miao, Xueyan Zheng, Bo Li, Xiao Shen, Yu Sheng Bai