With Graded Index Core Or Cladding Patents (Class 385/124)
  • Patent number: 11886001
    Abstract: Methods of fabricating a waveguide module are presented that include the steps of providing a glass substrate having first and second substantially planar parallel surfaces and comprising one or more cells in a first arrangement and singulating the glass substrate to produce one or more singulated cells. Singulated cells are treated with a chemical agent, laminated to a carrier substrate, processed, and delaminated from the carrier wafer and optionally subjected to further processing.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: January 30, 2024
    Assignee: Snap Inc.
    Inventors: Amit Singh, David G. Fliszar
  • Patent number: 11874502
    Abstract: A modular assembly for opto-electronic systems has a substrate on which various photonic integrated circuit (PIC) chips and electronic integrated circuit (EIC) chips are mounted. One or more waveguide (WG) chips mounted on the substrate align the optical communication between the PIC chips and fiber blocks for optical fibers. Preconfigured electrical connections in the substrate allow the PIC and EIC chips to communicate with one another and to communicate with solder bumps on the substrate for integration of the modular assembly with other electronic components.
    Type: Grant
    Filed: November 21, 2022
    Date of Patent: January 16, 2024
    Assignee: II-VI DELAWARE, INC.
    Inventors: Po Dong, Juthika Basak, Jiashu Chen
  • Patent number: 11874494
    Abstract: An optical fiber is provided that includes a core region and a cladding region. The core region is formed of silica glass doped with chlorine and/or an alkali metal. The cladding region surrounds the core region and includes an inner cladding directly adjacent to the core region, an outer cladding surrounding the inner cladding, and a trench region disposed between the inner cladding and the outer cladding in a radial direction. The trench region has a volume of about 30% ?-micron2 or greater. Additionally, the optical fiber has an effective area at 1550 nm of about 100 micron2 or less.
    Type: Grant
    Filed: February 25, 2021
    Date of Patent: January 16, 2024
    Assignee: Corning Incorporated
    Inventors: Scott Robertson Bickham, Sergejs Makovejs, Pushkar Tandon, Aramais Robert Zakharian
  • Patent number: 11828986
    Abstract: An optical receptacle includes: a first optical fiber; a second optical fiber connected to the first optical fiber by fusion splice; a ferrule including a fiber hole that holds an end of the first optical fiber; and a housing portion that houses therein: the ferrule, the first optical fiber, and a first portion of the second optical fiber. A fusion splice portion between the first optical fiber and the second optical fiber is disposed outside of the ferrule and within the housing portion.
    Type: Grant
    Filed: November 4, 2020
    Date of Patent: November 28, 2023
    Assignee: Fujikura Ltd.
    Inventors: Hau Huu Tran, Satoshi Shida
  • Patent number: 11804501
    Abstract: An ALD preparation method for eliminating camera module dot defects includes: placing a base substrate in a reaction chamber, and heating to 100-400° C.; introducing a first reaction precursor into the reaction chamber to chemically adsorb the first reaction precursor on the base substrate to form a first film layer; removing the excess first reaction precursor, and purging with inert gas; introducing a second reaction precursor into the reaction chamber to create a reaction between the second reaction precursor and the first reaction precursor to form a first refractive index layer; removing the excess second reaction precursor and a by-product of the reaction, and purging with inert gas; introducing a third reaction precursor into the reaction chamber to chemically adsorb the third reaction precursor on a surface of the first refractive index layer to form a second film layer; and removing the excess third reaction precursor, and purging with inert gas.
    Type: Grant
    Filed: May 18, 2020
    Date of Patent: October 31, 2023
    Assignee: HANGZHOU MDK OPTO ELECTRONICS CO., LTD
    Inventors: Wenzhi Ge, Yiwei Wang, Gang Wang, Kevin Weng, Hirokazu Yajima, Junnan Jiang
  • Patent number: 11778719
    Abstract: A laser beam delivery apparatus of an extreme ultra violet light source may include a high power seed module configured to generate a laser beam, a power amplifier configured to amplify the laser beam generated by the high power seed module, a beam transfer module configured to collect and move the laser beam amplified by the power amplifier, a final focusing assembly optical platform configured to adjust focus of the laser beam collected and moved by the beam transfer module, and a focusing unit configured to focus the laser beam with the focus adjusted by the final focusing assembly optical platform to a target droplet. The power amplifier may include a position adjuster configured to adjust a position of the laser beam. The position adjuster may include a refraction plate having a flat surface. The power amplifier may include a pointing adjuster, which may include a mirror.
    Type: Grant
    Filed: July 13, 2020
    Date of Patent: October 3, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dohyung Kim, Seongchul Hong, Kyungsik Kang, Insung Kim, Motoshi Sakai, Seulgi Lee, Jungchul Lee
  • Patent number: 11739175
    Abstract: An object of the present invention is to provide a curable resin composition in which the refractive index of a cured material is low and the adhesive strength to a member is excellent. There is provided a curable resin composition including: (A) component: an oligomer containing a (meth)acryloyl group and a fluorine atom in a molecule; (B) component: polyfunctional (meth)acrylate not containing a fluorine atom in a molecule; (C) component: a compound, not containing a fluorine atom in a molecule, of at least one selected from the group consisting of monofunctional (meth)acrylate containing a hydroxyl group, monofunctional (meth)acrylate containing an alicyclic ring, monofunctional (meth)acrylate containing an aromatic ring, (meth)acrylamide, and (meth)acrylic acid; and (D) component: a radical initiator, wherein a content of the (B) component is 0.1 parts by mass or more and 7.8 parts by mass or less relative to 100 parts by mass of the (A) component.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: August 29, 2023
    Assignee: THREEBOND CO., LTD.
    Inventor: Hiroto Matsuoka
  • Patent number: 11719879
    Abstract: An optical fiber includes: a core portion made of glass; a cladding portion that is located on an outer periphery of the core portion and that is made of glass having a lower refractive index than a refractive index of the core portion; and a coating portion that covers an outer periphery of the cladding portion. Further, an average value of a relative refractive-index difference of a center core of the core portion is 0.1 to 0.5%, a fiber diameter including the coating portion is equal to or smaller than 220 ?m, an effective cutoff wavelength is longer than 1260 nm and smaller than 1530 nm, and a mode field diameter of light at 1550 nm is equal to or larger than 9 ?m.
    Type: Grant
    Filed: July 29, 2021
    Date of Patent: August 8, 2023
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventor: Kazunori Mukasa
  • Patent number: 11719885
    Abstract: Disclosed are apparatuses for optical coupling and a system for communication. In one embodiment, an apparatus for optical coupling including a substrate and a grating coupler is disclosed. The grating coupler is disposed on the substrate and includes a plurality of coupling gratings arranged along a first direction, wherein effective refractive indices of the plurality of coupling gratings gradually decrease along the first direction.
    Type: Grant
    Filed: October 14, 2020
    Date of Patent: August 8, 2023
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Feng-Wei Kuo, Wen-Shiang Liao, Robert Bogdan Staszewski, Jianglin Du
  • Patent number: 11714228
    Abstract: An optical fiber includes: a central core portion; an intermediate layer; a trench layer; and a cladding portion. Further, relationships ?1>?2>?3 and 0>?3 are satisfied, where ?1, ?2, and ?3 are a relative refractive-index difference of the central core portion, the intermediate layer, and the trench layer, respectively, with respect to the cladding portion, ?1 is equal to or larger than 0.34% and equal to or smaller than 0.37%, |?3| is equal to or larger than 0.1% and equal to or smaller than 0.25%, ?1×|?3| is equal to or smaller than 0.08%2, a mode field diameter at a wavelength of 1310 nm is equal to or larger than 8.8 ?m, and a transmission loss at a wavelength of 1550 nm is equal to or smaller than 0.195 dB/km.
    Type: Grant
    Filed: August 16, 2021
    Date of Patent: August 1, 2023
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventor: Kazunori Mukasa
  • Patent number: 11708445
    Abstract: An object of the present invention is to provide a curable resin composition in which the refractive index of a cured material is low and the adhesive strength to a member is excellent. There is provided a curable resin composition including: (A) component: an oligomer containing a (meth)acryloyl group and a fluorine atom in a molecule; (B) component: polyfunctional (meth)acrylate not containing a fluorine atom in a molecule; (C) component: a compound, not containing a fluorine atom in a molecule, of at least one selected from the group consisting of monofunctional (meth)acrylate containing a hydroxyl group, monofunctional (meth)acrylate containing an alicyclic ring, monofunctional (meth)acrylate containing an aromatic ring, (meth)acrylamide, and (meth)acrylic acid; and (D) component: a radical initiator, wherein a content of the (B) component is 0.1 parts by mass or more and 7.8 parts by mass or less relative to 100 parts by mass of the (A) component.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: July 25, 2023
    Assignee: THREEBOND CO., LTD.
    Inventor: Hiroto Matsuoka
  • Patent number: 11686884
    Abstract: Light-absorbing flange lenses that may be used in the lens stacks of compact lens systems. In a light-absorbing flange lens, the effective area of the lens is composed of a transparent optical material, and at least a portion of the flange of the lens is composed of an optical material that absorbs at least a portion of the light that enters the flange. Using light-absorbing flange lenses may allow the lens barrel to be eliminated from the lens system, thus reducing the X-Y dimensions of the lens system when compared to conventional compact lens systems that include a lens stack enclosed in a lens barrel. In addition, using a light-absorbing material in the flanges of the light-absorbing flange lenses may reduce or eliminate optical aberrations such as lens flare, haze, and ghosting in images.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: June 27, 2023
    Assignee: Apple Inc.
    Inventor: Yoshikazu Shinohara
  • Patent number: 11681098
    Abstract: Embodiments of the current disclosure include low moat volume single mode ultra-low loss optical fibers. In some embodiments, a single mode optical fiber includes a first core region; a second core region surrounding and directly adjacent to the first core region, wherein a volume V of the second core region is less than or equal to 14% ??m2; a cladding region surrounding the core region; and wherein the optical fiber has a cable cutoff of less than 1260 nm, a mode field diameter at 1310 nm of 8.6 microns to 9.7 microns, a mode field diameter at 1550 nm of 9.9 microns to 11 microns, and an attenuation at 1550 nm of less than or equal to 0.17 dB/km.
    Type: Grant
    Filed: December 10, 2021
    Date of Patent: June 20, 2023
    Assignee: Corning Incorporated
    Inventors: Peter Gottfried Hebgen, Hazel Benton Matthews, III, Snigdharaj Kumar Mishra
  • Patent number: 11675124
    Abstract: A single mode optical fiber is provided that includes a core region and a cladding region, the cladding region including a depressed-index cladding region, a first outer cladding region, and a second outer cladding region. The first outer cladding region has a lower relative refractive than the second outer cladding region. The single mode optical fiber has a bend loss at 1550 nm for a 15 mm diameter mandrel of less than about 0.75 dB/turn, has a bend loss at 1550 nm for a 20 mm diameter mandrel of less than about 0.2 dB/turn, and a bend loss at 1550 nm for a 30 mm diameter mandrel of less than about 0.005 dB/turn. Additionally, the single mode optical fiber has a mode field diameter of about 9.0 microns or greater at 1310 nm wavelength and a cable cutoff of less than or equal to about 1260 nm.
    Type: Grant
    Filed: May 27, 2021
    Date of Patent: June 13, 2023
    Assignee: Corning Incorporated
    Inventors: Ming-Jun Li, Pushkar Tandon
  • Patent number: 11656105
    Abstract: An optical position-measuring device includes a scale and a scanning unit. The scale is connected to a first object, extends along a measurement direction and includes a first track having an incremental measuring graduation, and a second track having an absolute measuring graduation. The scanning unit is connected to a second object and includes a light source, a detector having an absolute detector arrangement configured to detect an aperiodic light pattern transmitted from the absolute measuring graduation onto a detection plane and an incremental detector arrangement configured to detect a periodic light pattern transmitted from the incremental measuring graduation onto a detection plane, and a fiber-optic plate arranged as a continuous component in front of the absolute detector arrangement and the incremental detector arrangement, wherein both absolute track information and incremental track information in the respective detection planes are transmitted via the fiber-optic plate in this manner.
    Type: Grant
    Filed: November 24, 2021
    Date of Patent: May 23, 2023
    Assignee: DR. JOHANNES HEIDENHAIN GMBH
    Inventors: Ulrich Benner, Tarek Nutzinger, Daniel Krempke, Johannes Haunreiter
  • Patent number: 11646480
    Abstract: A terahertz hollow core waveguide includes several successively cascaded waveguide units, and the waveguide units includes fiber core and cladding. The fiber core is composed of air, and the cladding is composed of dielectric rings, air rings, support strips, and an outer cladding. The medium rings and the air rings are successively surrounded on the outside of the fiber core, and the outer cladding is surrounded on the outside of the outermost air ring. All support strips in the same air ring of the same waveguide unit form a support strip group, and the support strips in the support strip group are arranged along the circumferential direction to connect two adjacent dielectric rings in the same waveguide unit or to connect the outermost dielectric ring and the outer cladding in the same waveguide unit.
    Type: Grant
    Filed: December 15, 2020
    Date of Patent: May 9, 2023
    Assignee: JIANGSU UNIVERSITY
    Inventors: Mingyang Chen, Tongtong Bai, Zhao Wang, Hang Xu
  • Patent number: 11585976
    Abstract: An optical fiber has corrugations on an outer surface to dissipate a portion of an input light beam, allowing the remaining portion of the light beam to be coupled to the optical fiber. By dissipating the portion of input light, damage to the optical fiber by uncoupled light is reduced.
    Type: Grant
    Filed: April 1, 2021
    Date of Patent: February 21, 2023
    Assignees: SAUDI ARABIAN OIL COMPANY, University of Southampton
    Inventors: Hesham Sakr, Hans Christian Hansen Mulvad, Shaif-ul Alam, Lin Xu, Callum Smith, John Hayes, David Richardson, Francesco Poletti, Damian Pablo San Roman Alerigi, Sameeh Issa Batarseh
  • Patent number: 11586094
    Abstract: Improved architectures and related methods for enhancing entangled photon generation in optical systems are described. Photons from a light source are coupled from the fundamental mode into an optical resonator in a higher-order mode. The optical resonator comprises a photon generation portion configured to generate entangled photons from the coupled photons. The entangled photons are selectively extracted from the optical resonator in the fundamental mode while the remaining photons propagate through the optical resonator mode and combine with the source photons entering the optical resonator. While the source photons propagating or entering the optical resonator resonate within the optical resonator, the entangled photons are not resonant with the optical resonator, and are selectively extracted before traversing a complete cycle in the optical resonator. Extracted entangled photons can then be output for use in, for example, a communication system.
    Type: Grant
    Filed: July 13, 2021
    Date of Patent: February 21, 2023
    Assignee: Honeywell International Inc.
    Inventors: Chad Fertig, Matthew Wade Puckett, Matthew Robbins, Neil A. Krueger
  • Patent number: 11536895
    Abstract: A polarization-independent orbital angular momentum modulator based on a chiral fiber grating, a method for manufacturing the same, and an orbital angular momentum beam generator. The orbital angular momentum modulator includes an optical fiber body having a spiral fiber structure, and the spiral fiber structure has a long-period optical fiber grating effect. The optical fiber body has a periodic spiral refractive index modulation in an axial direction. A period of the spiral refractive index modulation has a magnitude of hundreds of microns, and the spiral refractive index modulation is distributed in an axial direction, a radial direction, and an angular direction of the optical fiber body, and configured to excite a spiral phase to generate an orbital angular momentum beam.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: December 27, 2022
    Assignee: SHENZHEN UNIVERSITY
    Inventors: Zhiyong Bai, Yan Zhang, Yiping Wang, Cailing Fu, Shen Liu
  • Patent number: 11506841
    Abstract: An optical fiber system exploits a principle of topological confinement for guided higher-order modes, in contrast to more conventional total-internal-reflection (TIR) confinement. The optical fiber has a geometry and index profile defining a cutoff wavelength for a predetermined L-mode of optical signal propagation in the optical fiber, where L is azimuthal mode index. An optical source subsystem is coupled to the optical fiber to establish an optical signal propagating in the optical fiber, wherein the optical signal has the predetermined L-mode and a wavelength being either (1) at least 15% above the cutoff wavelength such that the optical beam propagates as a topologically confined mode, or (2) sufficiently above the cutoff wavelength that, based on the L-mode of the optical beam, the optical beam propagates as a topologically confined mode having propagation loss less than 3 dB/meter.
    Type: Grant
    Filed: May 9, 2021
    Date of Patent: November 22, 2022
    Assignee: Trustees of Boston University
    Inventors: Siddharth Ramachandran, Zelin Ma
  • Patent number: 11506835
    Abstract: The present disclosure provides optical fibers that exhibit low macrobend loss at 1550 nm at bend diameters greater than 40 mm. The relative refractive index profile of the fibers includes a trench cladding region having a trench volume configured to minimize macrobend loss at large bend diameters. The thickness and/or depth of the trench cladding region are controlled to reduce trench volume to a degree consistent with reducing macrobend loss at bend diameters greater than 40 mm. The optical fiber includes an outer cladding region that surrounds and is directly adjacent to the trench cladding region and an optional offset cladding region between the trench cladding region and the core region. In some embodiments, the core region is a segmented core region that includes inner and outer core regions. The low macrobend loss available from the optical fibers makes them particularly suitable for applications in submarine telecommunications systems.
    Type: Grant
    Filed: October 28, 2020
    Date of Patent: November 22, 2022
    Assignee: Corning Incorporated
    Inventors: Peter Gottfried Hebgen, Hazel Benton Matthews, III, Snigdharaj Kumar Mishra
  • Patent number: 11506834
    Abstract: A single mode optical fiber is provided that includes a core region having an outer radius r1 and a maximum relative refractive index ?1max. The single mode optical fiber has a bend loss at 1550 nm for a 15 mm diameter mandrel of less than about 0.75 dB/turn, has a bend loss at 1550 nm for a 20 mm diameter mandrel of less than about 0.2 dB/turn, and a bend loss at 1550 nm for a 30 mm diameter mandrel of less than 0.002 dB/turn. Additionally, the single mode optical fiber has a mode field diameter of 9.0 microns or greater at 1310 nm wavelength and a cable cutoff of less than or equal to about 1260 nm.
    Type: Grant
    Filed: May 13, 2021
    Date of Patent: November 22, 2022
    Assignee: Corning Incorporated
    Inventors: Snigdharaj Kumar Mishra, Pushkar Tandon
  • Patent number: 11499817
    Abstract: A coordinate measuring machine (CMM) system is provided including utilization of a vision probe (e.g., for performing operations for determining and/or measuring surface profiles of workpieces, etc.) The angular orientation of the vision probe may be adjusted using a rotation mechanism so that the optical axis of the vision probe is directed toward an angled surface of a workpiece (e.g., in some implementations the optical axis may be approximately perpendicular to the angled workpiece surface). X-axis, y-axis and z-axis slide mechanisms (e.g., moving in mutually orthogonal directions) may in conjunction move the vision probe to acquisition positions along an image stack acquisition axis (which may approximately coincide with the optical axis) for acquiring a stack of images of the angled workpiece surface. Focus curve data may be determined from analysis of the image stack, which indicates 3-dimensional positions of surface points on the angled surface of the workpiece.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: November 15, 2022
    Assignee: Mitutoyo Corporation
    Inventor: Travis Matthew Eiles
  • Patent number: 11495700
    Abstract: The present disclosure generally relates to structures for use in optoelectronic/photonic applications and integrated circuit (IC) chips. The present disclosure also relates to semiconductor devices having a photodetector coupled with a waveguide, more particularly, a photodetector with a butt-end coupled waveguide. The present disclosure provides a structure having a substrate, a photodetector arranged above the substrate, the photodetector having a core body and a coupler that is adjacent to the core body, in which the core body is configured to absorb light received by the coupler, and the coupler including a plurality of grating structures having respective widths that vary as a function of position relative to the core body.
    Type: Grant
    Filed: February 23, 2020
    Date of Patent: November 8, 2022
    Assignee: GlobalFoundries U.S. Inc.
    Inventors: Yusheng Bian, Ajey Poovannummoottil Jacob
  • Patent number: 11467335
    Abstract: The optical fibers disclosed have single mode and few mode optical transmission for VCSEL-based optical fiber transmission systems. The optical fibers have a cable cutoff wavelength ?C of equal to or below 1260 nm thereby defining single mode operation at wavelengths greater than 1260 nm and few-mode operation at wavelengths in a wavelength range from 800 nm and 1100 nm. The mode-field diameter is in the range from 8.0 microns to 10.1 microns at 1310 nm. The optical fibers have an overfilled bandwidth OFL BW of at least 1 GHz·km at at least one wavelength in the wavelength range. The optical fibers have a single-step or two-step core and can have a trench refractive index profile. VCSEL based optical transmission systems and methods are disclosed that utilize both single core and multicore versions of the optical fiber.
    Type: Grant
    Filed: July 16, 2020
    Date of Patent: October 11, 2022
    Assignee: Corning Incorporated
    Inventors: Xin Chen, Kangmei Li, Ming-Jun Li
  • Patent number: 11462878
    Abstract: An all solid hybrid waveguiding structure provides large mode area, acceptable losses of the desired core mode and very high losses of the undesired next higher order mode in the core. Embodiments of the waveguide include a hybrid of low index barriers providing confinement by total internal reflection, and further include high index rings that support guided modes only at effective indices different from that of the desired core mode.
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: October 4, 2022
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Paul H. Pax, Diana C. Chen, Michael J. Messerly
  • Patent number: 11448821
    Abstract: One embodiment of the present disclosure relates to an SFG (slanted fiber grating) that can easily realize a high-performance gain equalizer. The SFG includes an optical fiber comprised of silica-based glass and including a core, a first cladding containing a photosensitive material, and a second cladding. A specific section between two different points arranged along a fiber axis in the optical fiber is configured with a first region, a pair of second regions, and a third region. The first region includes a slanted Bragg grating provided in a region as the first cladding. The pair of second regions are arranged to sandwich the first region. The third region is disposed to sandwich both the first region and the pair of second regions. An MFD at a wavelength of 1.55 ?m in the third region is smaller than an MFD at a wavelength of 1.55 ?m in the first region.
    Type: Grant
    Filed: April 6, 2021
    Date of Patent: September 20, 2022
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Shigehiro Nagano, Manabu Shiozaki, Jun Kinugasa, Takemi Hasegawa
  • Patent number: 11415514
    Abstract: A biochip device comprising a substrate constituted by at least one plate of material forming a multimode planar waveguide and carrying chromophore elements suitable for emitting fluorescence in response to excitation by guided waves having an evanescent portion, the device being characterized in that it includes coupling means for coupling excitation light with the waveguide in the form of guided waves, the coupling means being substantially non-directional.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: August 16, 2022
    Assignee: Genewave SAS
    Inventors: Claude Weisbuch, Lucio Martinelli, Henri Benisty, Christof Schafauer, Gabriel Sagarzazu, Thierry Gacoin, Mélanie Bedu
  • Patent number: 11366266
    Abstract: An optical fiber includes a core, a first clad that is provided on an outer circumferential portion of the core and has a refractive index lower than that of the core, and a second clad that is provided on an outer circumferential portion of the first clad and has a refractive index lower than that of the first clad. In the optical fiber, a mode field diameter at a wavelength of 1.55 ?m is equal to or greater than 11.5 ?m, a cutoff wavelength is equal to or less than 1.53 ?m, a bending loss at a bending radius of 30 mm and a wavelength of 1.625 ?m is equal to or less than 2.0 dB/100 turns, and a delay time of transmission light per unit length at a wavelength of 1.55 ?m is equal to or less than 4.876 ?s/km.
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: June 21, 2022
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Yuto Sagae, Kazuhide Nakajima, Takashi Matsui
  • Patent number: 11327223
    Abstract: A multimode optical fiber having a core region. The core region includes silica, has an outer radius r1, and has a maximum relative refractive index of about 1.5% or less. Additionally, the multimode optical fiber is configured to have an effective bandwidth of about 4.7 GHz-Km or greater for an excited portion of the core region that has a diameter greater than 50 microns, the effective bandwidth being at a wavelength that is within a range of between about 800 and about 1370 nm.
    Type: Grant
    Filed: March 29, 2021
    Date of Patent: May 10, 2022
    Assignee: Corning Incorporated
    Inventors: Xin Chen, Kangmei Li, Ming-Jun Li, Anping Liu, Simit Mayank Patel, Jeffery Scott Stone
  • Patent number: 11287588
    Abstract: A fiber ribbon interconnect may include a fiber ribbon, a first optical connector at a first end of the fiber ribbon, and a second optical connector at a second end of the fiber ribbon. The fiber ribbon includes two or more cladding-strengthened glass optical fibers each having an outer surface. The fiber ribbon also includes a common protective coating that surrounds the outer surfaces of the two or more cladding-strengthened glass optical fibers.
    Type: Grant
    Filed: November 20, 2019
    Date of Patent: March 29, 2022
    Assignee: Corning Incorporated
    Inventors: Ming-Jun Li, Qi Wu
  • Patent number: 11237324
    Abstract: The present disclosure provides a few mode optical fiber (100). The few mode optical fiber (100) includes a core (102). The core (102) defined by a region around a central longitudinal axis (112) of the few mode optical fiber (100). In addition, the core (102) has a super gaussian refractive index profile with curve parameter gamma and rescale factor (a). In addition, the core (102) has a first annular region (104) extended from central longitudinal axis (112) of the few mode optical fiber (100) to radius r1. Further, the core (102) has a second annular region (106) extended from radius r1 to radius r2. Furthermore, the core (102) has a third annular region (108) extended from radius r2 to radius r3. In addition, the few mode optical fiber (100) has a cladding (110) extended from radius r3 to radius r4.
    Type: Grant
    Filed: January 29, 2021
    Date of Patent: February 1, 2022
    Assignee: STERLITE TECHNOLOGIES LIMITED
    Inventors: Srinivas Reddy Munige, Anand Pandey
  • Patent number: 11174400
    Abstract: A method of manufacturing a nanocomposite GRIN optical-element. The method comprises providing a volumetric gradient refractive profile and providing a plurality of nanocomposite-inks to form the GRIN optical-element. Each of the plurality of nanocomposite-inks have nanoparticles dispersed in an organic-matrix. The plurality of nanocomposite-inks comprising of a nanoparticle diffusion inhibiting nanocomposite-ink wherein nanoparticle diffusion is inhibited with respect to another of the plurality of nanocomposite-inks. The diffusion inhibiting nanocomposite-ink having a different dielectric property from at least one of the other plurality of nanocomposite-inks. The plurality of nanocomposite-inks also comprising a nanoparticle diffusion permitting nanocomposite-ink wherein nanoparticle diffusion is permitted with respect to at least another of the plurality of nanocomposite-inks.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: November 16, 2021
    Assignee: VADIENT OPTICS, LLC
    Inventors: George Williams, John Paul Harmon, Charles G. Dupuy, Ngoc Thanh Nguyen
  • Patent number: 11168015
    Abstract: An optical fiber includes: a core; and a cladding layer disposed on an outer circumference of the core. A Cl concentration in the cladding layer is 0.029 wt % to 0.098 wt %. In the optical fiber, ?2??1?0 dB/km is satisfied at a wavelength of 430 nm where ?1 is a value of transmission loss before exposure of the optical fiber to hydrogen and ?2 is a value of transmission loss after the exposure.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: November 9, 2021
    Assignee: Fujikura Ltd.
    Inventor: Hisayuki Nakagome
  • Patent number: 11156770
    Abstract: Multimode optical fibers are disclosed herein. In some embodiment disclosed herein, a multimode optical fiber having a bandwidth of greater than 2 GHz·km includes: a glass matrix having a front endface, a back endface, a length (L), a refractive index n20 and a central axis (AC); and a plurality of cores arranged within the glass matrix, wherein the plurality of cores run generally parallel to the central axis between the front and back endfaces and having respective refractive indices n50, wherein n50>n20, wherein the glass matrix serves as a common cladding for the plurality of cores so that each core and the common cladding define a waveguide, wherein each core is a single mode at an operating wavelength; and wherein any two cores have an center-to-center spacing s of 3 ?m to 20 ?m and a coupling coefficient of greater than 10 m?1 but less than 200 m?1.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: October 26, 2021
    Assignee: Corning Incorporated
    Inventors: Ming-Jun Li, Jeffery Scott Stone
  • Patent number: 11125415
    Abstract: A light source system or apparatus configured with an infrared illumination source includes a gallium and nitrogen containing laser diode based white light source. The light source system includes a first pathway configured to direct directional electromagnetic radiation from the gallium and nitrogen containing laser diode to a first wavelength converter and to output a white light emission. In some embodiments infrared emitting laser diodes are included to generate the infrared illumination. In some embodiments infrared emitting wavelength converter members are included to generate the infrared illumination. In some embodiments a second wavelength converter is optically excited by a UV or blue emitting gallium and nitrogen containing laser diode, a laser diode operating in the long wavelength visible spectrum such as a green laser diode or a red laser diode, by a near infrared emitting laser diode, by the white light emission produced by the first wavelength converter, or by some combination thereof.
    Type: Grant
    Filed: July 8, 2020
    Date of Patent: September 21, 2021
    Assignee: KYOCERA SLD Laser, Inc.
    Inventors: James W. Raring, Paul Rudy, Melvin McLaurin, Troy Trottier, Steven DenBaars
  • Patent number: 11111171
    Abstract: An optical fiber includes: a core; and a cladding layer disposed on an outer circumference of the core. A Cl concentration in the cladding layer is 0.029 wt % to 0.098 wt %. In the optical fiber, ?2??1?0 dB/km is satisfied at a wavelength of 430 nm where ?1 is a value of transmission loss before exposure of the optical fiber to hydrogen and ?2 is a value of transmission loss after the exposure.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: September 7, 2021
    Assignee: Fujikura Ltd.
    Inventor: Hisayuki Nakagome
  • Patent number: 11099070
    Abstract: The present disclosure relates to a high-fineness Fabry-Perot cavity (for use in the THz range) with a guide comprising lateral cavities arranged to guide an electromagnetic wave into the cavity. The invention also relates to a method for implementing a device including such a Fabry-Perot cavity.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: August 24, 2021
    Inventors: Gaël Mouret, Francis Hindle, Robin Bocquet
  • Patent number: 11099321
    Abstract: The optical fibers disclosed have single mode and few mode optical transmission for VCSEL-based optical fiber transmission systems. The optical fibers have a cable cutoff wavelength ?C of equal to or below 1260 nm thereby defining single mode operation at a wavelength in a first wavelength range greater than 1260 nm and few-mode operation at a wavelength in a second wavelength range from 840 nm and 1060 nm. The mode-field diameter is in the range from 8.6 microns to 11 microns at 1550 nm or in the range from 8.0 microns to 10.1 microns at 1310 nm. The optical fibers have an overfilled bandwidth OFL BW of at least 1 GHz·km at the at least one wavelength in the second wavelength range. The optical fibers have a gradient-index core and can have a trench refractive index profile. VCSEL based optical transmission systems and methods are disclosed that utilize both single core and multicore versions of the optical fiber.
    Type: Grant
    Filed: January 20, 2020
    Date of Patent: August 24, 2021
    Assignee: Corning Incorporated
    Inventors: Xin Chen, Ming-Jun Li
  • Patent number: 10975188
    Abstract: The present invention relates to a rapid assembled small-sized block polymer material with low quenching temperature and the preparation and application thereof. In particular, the present invention discloses a block copolymer, and glass transition temperature of the block copolymer is less than 120° C. The present invention also discloses the preparation and application of the block copolymer. The block copolymer can achieve excellent phase separation and rapid patterning at a lower annealing temperature (e.g. 80° C.) and a shorter annealing time (e.g. 30 s), and a photolithographic pattern with a very high resolution (e.g. 5 nm half-pitch) can be further obtained by etching, which provides a new photolithographic mean for further extension of Moore's Law to achieve semiconductor photolithography with a resolution of less than 10 nm, or even 5 nm (half-pitch).
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: April 13, 2021
    Assignee: FUDAN UNIVERSITY
    Inventors: Hai Deng, Xuemiao Li, Jie Li
  • Patent number: 10962708
    Abstract: The invention concerns a bending-loss single mode optical fibre having a Mode Field Diameter at 1310 nm greater than or equal to 9 microns and having a core and a cladding, the core refractive index profile having a trapezoid-like shape. According to an aspect of the invention, the cladding comprises a shallow trench with a refractive index difference Ant between ?2×10?3; and ?0.9×10?3, and: the trapezoid ratio r0/r1 of the core is between 0.1 and 0.6, preferably, between 0.2 and 0.5, more preferably between 0.25 and 0.45; the core surface integral Formula (I) is between 20.10 3 ?m and 24.10?3 ?m and the cladding surface integral Formula (II) is between ?25×10?3 ?m and ?9×10?3 ?m, where ?n(r) is the refractive-index difference with respect to said outer cladding as a function of the radius r, and said single mode optical fibre fulfils the following criterion: 25.7×10?3?V01?0.2326V02?26.8×10?3.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: March 30, 2021
    Assignee: Draka Comteq France
    Inventors: Louis-Anne de Montmorillon, Pierre Sillard
  • Patent number: 10935720
    Abstract: Systems, apparatuses, and methods are described for modifying a beam parameter product of a laser beam. The modified beam parameter product may increase the number of tasks that may be performed using a given laser with its original beam parameter product. By increasing the beam parameter product of a laser, an initial low beam parameter product beam may be used to perform tasks requiring a higher beam parameter product. The beam may be modified to redirect portions of the beam at different angles via one or more non-imaging refracting optical components or by one or more Fiber Bragg gratings.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: March 2, 2021
    Assignee: II-VI Delaware, Inc.
    Inventors: Detlev Wolff, Andrea Heuser
  • Patent number: 10921513
    Abstract: A method is described for selecting fibers meeting requirements of a second minimum bandwidth at a second wavelength based on differential mode delay data measured at a first wavelength different from the second wavelength.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: February 16, 2021
    Assignee: Corning Incorporated
    Inventors: John Steele Abbott, III, Scott Robertson Bickham
  • Patent number: 10908354
    Abstract: An optical fiber includes a glass fiber and a coating resin covering an outer periphery of the glass fiber. The glass fiber includes a core, an inner cladding, a trench, and an outer cladding. An outer diameter of the glass fiber is 99 ?m or larger and 101 ?m or smaller. An outer diameter of the coating resin is 160 ?m or larger and 170 ?m or smaller. A mode field diameter for light having a wavelength of 1310 nm is 7.2 ?m or larger and 8.2 ?m or smaller. Bending loss at a wavelength of 1550 nm when wound in a ring shape having a radius of 10 mm is 0.1 dB/turn or less. Bending loss at the wavelength of 1550 nm when wound in the ring shape having the radius of 7.5 mm is 0.5 dB/turn or less.
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: February 2, 2021
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Keisei Morita, Hiroki Ishikawa, Sotaro Ida
  • Patent number: 10884183
    Abstract: A few-mode optical fiber including a core's refractive-index profile ?n(r) of trapezoid-like shape. The optical core having a center part of radius R1 and a transition part ranges from the radius R1 to a radius R2, such that R2>R1 with R2 between 6.8 and 11.5 ?m, said refractive-index profile being defined by a surface integral of the core index profile of between 180×10?3 and 270×10?3 ?m; a transition slope S of between 1.7×10?3 and 12×10?3 ?m?1; with ?n1 and ?n2 the refractive-index difference respectively of the center part of the optical core and of the cladding part adjacent to the optical core, with respect to the outer optical cladding.
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: January 5, 2021
    Assignee: DRAKA COMTEQ FRANCE
    Inventors: Marianne Bigot, Jean-Baptiste Trinel, Pierre Sillard, Louis-Anne De Montmorillon
  • Patent number: 10877220
    Abstract: A method of processing by controlling one or more beam characteristics of an optical beam may include: launching the optical beam into a first length of fiber having a first refractive-index profile (RIP); coupling the optical beam from the first length of fiber into a second length of fiber having a second RIP and one or more confinement regions; modifying the one or more beam characteristics of the optical beam in the first length of fiber, in the second length of fiber, or in the first and second lengths of fiber; confining the modified one or more beam characteristics of the optical beam within the one or more confinement regions of the second length of fiber; and/or generating an output beam, having the modified one or more beam characteristics of the optical beam, from the second length of fiber. The first RIP may differ from the second RIP.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: December 29, 2020
    Assignee: NLIGHT, INC.
    Inventors: Ken Gross, Brian Victor, Robert Martinsen, Dahv A. V. Kliner, Roger Farrow
  • Patent number: 10845545
    Abstract: In various embodiments, the beam parameter product and/or numerical aperture of a laser beam is adjusted utilizing a step-clad optical fiber having a central core, a first cladding, an annular core, and a second cladding.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: November 24, 2020
    Assignee: TERADIODE, INC.
    Inventors: Wang-Long Zhou, Francisco Villarreal-Saucedo, Parviz Tayebati, Bien Chann
  • Patent number: 10826264
    Abstract: A supercontinuum optical pulse source provides a combined supercontinuum, and can comprise one or more seed pulse sources; first and second optical amplifiers arranged along first and second respective optical paths, wherein the first and second optical amplifiers are configured to amplify one or more optical signals generated by the one or more seed pulse sources; a first microstructured light-guiding member arranged along the first optical path and configured to generate supercontinuum light responsive to an optical signal propagating along the first optical path; a second microstructured light-guiding member arranged along the second optical path and configured to generate supercontinuum light responsive to an optical signal propagating along the second optical path; a supercontinuum-combining member to combine supercontinuum generated in at least the first and second microstructured light-guiding members to form a combined supercontinuum; wherein the supercontinuum-combining member comprises an output fib
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: November 3, 2020
    Assignee: NKT PHOTONICS A/S
    Inventors: John Redvers Clowes, Anatoly Borisovich Grudinin, Adam Devine
  • Patent number: 10823910
    Abstract: A small core-diameter graded-index optical fiber include a core layer and a cladding having an inner cladding layer, a depressed cladding layer, and an outer cladding layer from inside to outside thereof. The core layer has a parabolic refractive index profile with a distribution index in a range of 1.9-2.1, a radius in a range of 10-21 ?m, and a ?1 max in a range of 0.7-1.7% at a core layer center, and is a silica glass layer co-doped with germanium, phosphorus, and fluoride. The inner cladding layer is a pure silica layer or an F-doped silica glass layer, and has a unilateral width in a range of 0.5-5 ?m and a ?2 in a range of ?0.4-0%. The depressed cladding layer has a unilateral width in a range of 2-10 ?m and a ?3 in a range from ?0.8% to ?0.2%. The outer cladding layer is a pure silica glass layer.
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: November 3, 2020
    Assignee: YANGTZE OPTICAL FIBRE AND CABLE JOINT STOCK LIMITED COMPANY
    Inventors: Wufeng Xiao, Runhan Wang, Rong Huang, Halying Wang, Anlin Zhang, Di Yang, Tiejun Wang
  • Patent number: 10816734
    Abstract: A multimode optical fiber transmission system that employs an optical fiber with at least one modal-conditioning fiber is disclosed. The system includes a single-mode transmitter that generates modulated light having a wavelength between 800 nm and 1600 nm; an optical receiver configured to receive and detect the modulated light; a multimode optical fiber that defines an optical path between the single-mode transmitter and the optical receiver, the multimode optical fiber having a core with a diameter D40 and a refractive index profile configured to optimally transmit light at a nominal wavelength of 850 nm; and at least one modal-conditioning fiber operably disposed in the optical path to perform at least one of modal filtering and modal converting of the optical modulated light.
    Type: Grant
    Filed: October 7, 2019
    Date of Patent: October 27, 2020
    Assignee: Corning Optical Communications LLC
    Inventors: Xin Chen, John Douglas Coleman, Kangmei Li, Ming-Jun Li, Jie Liu, Qi Wu