Patents by Inventor Yunbing Xu

Yunbing Xu 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: 20240264379
    Abstract: A wavelength division multiplexer (WDM) includes one or more lenses, a WDM filter, and multiple common, multiple reflected and multiple transmit optical fibers optically coupled to the one or more lenses. Light at a first wavelength propagates in either direction between one common optical fiber and one reflected optical fiber via the one or more lenses and the WDM filter, wherein the WDM filter reflects the light at a first wavelength during propagation in either direction between the common optical fiber and the reflected optical fiber. Light at a second wavelength propagates in either direction between the common optical fiber and one transmit optical fiber via the one or more lenses and the WDM filter, wherein the WDM filter passes the light at a second wavelength during propagation in either direction between the common optical fiber and the transmit optical fiber.
    Type: Application
    Filed: February 23, 2023
    Publication date: August 8, 2024
    Inventors: Tingyu Xue, Yang Li, Wade Tang, Lixun Chen, Tianguo Bo, Jiangming Lin, Wei Wu, Yunbing Xu, Cart Song, Yihui Wang
  • Publication number: 20240036264
    Abstract: An optical switch includes an array of optical fibers to conduct optical signals. A biconvex lens has a front convex surface facing the fibers' tips and has a back convex surface facing a microelectromechanical (MEMS) mirror. The MEMS mirror can be selectively oriented to reflect the optical signals incident to the MEMS mirror so the optical signal input from one fiber can be selectively routed to another of the fibers.
    Type: Application
    Filed: February 14, 2023
    Publication date: February 1, 2024
    Inventors: Yang Li, Lixun Chen, Tianguo Bai, Wade Tang, Yunbing Xu, Tingyu Xue
  • Patent number: 11698493
    Abstract: A single-ended output circulator includes a three-core optical fiber head having first, second, and third optical fiber cores; a walk-off crystal having a first surface facing towards the second end of the three-core optical fiber head tube and a second surface facing away from the second end of the three-core optical fiber head tube; a plurality of half-wave plates each having a first surface coupled to the second surface of the walk-off crystal and a second surface facing away from the second surface of the walk-off crystal; a collimating lens having a first end and a second end; a reflection mirror configured to reflect light beams from the collimating lens; an optical prism between the collimating lens and the reflection mirror and configured to transmit a light beam along a propagation direction according to a polarization direction of the light beam; and a polarization rotator.
    Type: Grant
    Filed: March 17, 2021
    Date of Patent: July 11, 2023
    Assignee: II-VI DELAWARE, INC.
    Inventors: Li Wu, Yunbing Xu, Weimin Chen, Yuping Wu, Danping Wei, Peng Xiao, Yang Li, Hongming Cai
  • Publication number: 20220291535
    Abstract: An optical isolator has high isolation and low insertion loss in bandwidth. An input fiber collimator, isolator cores, and an output fiber collimator are connected in sequence in an optical path. Acute ends of wedge surfaces of lenses and fiber heads of the collimators are polished to form small platforms. Faraday crystals of the cores are optically active and are different in wavelength; birefringent wedges of the cores are different in wedge angle; and an optical axis of the birefringent wedges at an emitting end of the first core is perpendicular to an optical axis of the birefringent wedges at an incident end of the second core. The two stages of Faraday crystals with different wavelengths are overlaid to extend and widen isolation performance in bandwidth, and a small-spot collimator design is adopted so coupling loss is low, performance is stable, and reliability is high.
    Type: Application
    Filed: February 1, 2022
    Publication date: September 15, 2022
    Inventors: Shuyu WU, Dong LIN, Yunbing XU
  • Publication number: 20210294037
    Abstract: A single-ended output circulator includes a three-core optical fiber head having first, second, and third optical fiber cores; a walk-off crystal having a first surface facing towards the second end of the three-core optical fiber head tube and a second surface facing away from the second end of the three-core optical fiber head tube; a plurality of half-wave plates each having a first surface coupled to the second surface of the walk-off crystal and a second surface facing away from the second surface of the walk-off crystal; a collimating lens having a first end and a second end; a reflection mirror configured to reflect light beams from the collimating lens; an optical prism between the collimating lens and the reflection mirror and configured to transmit a light beam along a propagation direction according to a polarization direction of the light beam; and a polarization rotator.
    Type: Application
    Filed: March 17, 2021
    Publication date: September 23, 2021
    Inventors: Li WU, Yunbing Xu, Weimin Chen, Yuping Wu, Danping Wei, Peng Xiao, Yang Li, Hongming Cai