公开(公告)号：US12090716B2

公开(公告)日：2024-09-17

申请号：US17435533

申请日：2020-02-14

申请人： Halliburton Energy Services, Inc.

发明人： Crispin Doyle

IPC分类号： C03C15/00 ,  B29D11/00 ,  C03C17/36 ,  C03C25/10 ,  C03C25/6208 ,  G01L1/24 ,  G01L11/02 ,  G02B6/02 ,  G02B6/024 ,  G01L7/08

CPC分类号： B29D11/00663 ,  B29D11/00875 ,  C03C15/00 ,  C03C17/3634 ,  C03C17/3649 ,  G01L1/246 ,  G01L11/025 ,  G02B6/02123 ,  G02B6/02176 ,  G02B6/024 ,  C03C2217/214 ,  C03C2217/255 ,  C03C2218/151 ,  C03C2218/152 ,  G01L7/086

摘要： A method for forming a pressure sensor is provided wherein an optical fibre is provided, the optical fibre comprising a core, a cladding surrounding the core, and a birefringence structure for inducing birefringence in the core. The birefringence structure comprises first and second holes enclosed within the cladding and extending parallel to the core. A portion of the optical fibre comprising the core and the birefringence structure is encased within a chamber, wherein the chamber is defined by a housing comprising a pressure transfer element for equalising pressure between the inside and the outside of the housing. An optical sensor is provided along the core of the optical fibre. Providing the optical sensor comprises optically inducing stress in the core so that the optical sensor exhibits intrinsic birefringence. The chamber is filled with a substantially non-compressible fluid. Consequently, the birefringence structure is shaped so as to convert an external pressure provided by the non-compressible fluid within the chamber to an anisotropic stress in the optical sensor.

公开(公告)号：US11733451B2

公开(公告)日：2023-08-22

申请号：US17583290

申请日：2022-01-25

申请人： Max-Planck-Gesellschaft zur Foerderung der Wissenschaften e.V.

发明人： Philip Russell ,  Patrick Uebel ,  Michael Henoch Frosz

IPC分类号： G02B6/02 ,  G02B6/024 ,  G02F1/35 ,  G02F1/365

CPC分类号： G02B6/02328 ,  G02B6/024 ,  G02B6/02342 ,  G02B6/02357 ,  G02B6/02361 ,  G02B6/02366 ,  G02B6/02371 ,  G02F1/3544 ,  G02F1/365

摘要： A hollow-core anti-resonant-reflecting fibre (HC-AF) includes a hollow-core region, an inner cladding region, and an outer cladding region. The hollow-core region axially extends along the HC-AF. The inner cladding region includes a plurality of anti-resonant elements (AREs) and surrounds the hollow-core region. The outer cladding region surrounds the inner cladding region. The hollow-core region and the plurality of AREs are configured to provide phase matching of higher order hollow-core modes and ARE modes in a broadband wavelength range.

公开(公告)号：US20230244026A1

公开(公告)日：2023-08-03

申请号：US18295360

申请日：2023-04-04

申请人： Cisco Technology, Inc.

发明人： Norbert Schlepple

IPC分类号： G02B6/024

CPC分类号： G02B6/024

摘要： Techniques are provided for radiation-induced birefringence in a Polarization-Maintaining Fiber (PMF). In one example, a fiber is obtained. At least one local volume of the fiber is irradiated to induce an end-to-end birefringence in the fiber. Based on the end-to-end birefringence induced in the fiber, a PMF is produced.

公开(公告)号：US11598915B2

公开(公告)日：2023-03-07

申请号：US17406945

申请日：2021-08-19

申请人： BEIHANG UNIVERSITY

发明人： Chunxi Zhang ,  Jingming Song ,  Ningfang Song ,  Zhiyu Guo ,  Zuchen Zhang ,  Yan Li

IPC分类号： G02B6/02 ,  G02B6/024

摘要： An anti-torsion solid-core polarization-maintaining photonic crystal fiber includes a cladding having an inner layer arranged around the core and an outer layer between the inner layer and the outer wall of the cladding. The inner layer has multi-layer air holes used to construct optical properties and two micron-size air holes arranged along the x-axis extending in the center producing form birefringence. The outer layer includes multi-layer air holes arranged radially along the y-axis. The size and arrangement of the multi-layer air holes in the outer layer cause the bending stiffness of the photonic crystal fiber along the x-axis to be different from that along the y-axis. While meeting the requirements of the optical properties of the fiber, the photonic crystal fiber possesses an anti-torsion ability due to the anisotropy of stress distribution in the radial direction, thereby reducing the non-reciprocal phase difference generated by the magneto-optic Faraday Effect.

公开(公告)号：US11464412B2

公开(公告)日：2022-10-11

申请号：US17084056

申请日：2020-10-29

申请人： Medlumics S.L.

发明人： Matthieu Duperron ,  Juan Sancho Durá ,  José Luis Rubio Guivernau ,  Sara María Más Gómez

IPC分类号： A61B5/00 ,  G02B6/122 ,  G02B6/126 ,  G02B6/024 ,  A61B90/00 ,  G02B6/12 ,  A61B90/30 ,  G01B9/02091 ,  G01B9/0209

摘要： A medical instrument is described that includes an optical source, an optical fiber, and a waveguide patterned upon a substrate. The optical fiber receives radiation from the optical source and includes a first segment and a second segment. The second segment is rotated about an optical axis relative to the first segment. The waveguide receives radiation from the optical source and guides a beam of radiation. The waveguide includes a first waveguide segment designed to impart a first differential group delay on the beam of radiation and a second waveguide segment designed to impart a second differential group delay on the beam of radiation. A sum of the first differential group delay and the second differential group delay is substantially zero.

公开(公告)号：US11448551B2

公开(公告)日：2022-09-20

申请号：US17055069

申请日：2019-05-20

申请人： GRINTECH GmbH

发明人： Gregor Matz ,  Bernhard Messerschmidt

IPC分类号： G01J3/02 ,  A61B5/00 ,  G01J3/44 ,  G01N21/65 ,  G02B6/02 ,  G02B6/024 ,  G02B26/10 ,  G02B27/12 ,  A61B1/00 ,  G02B27/10 ,  A61B1/06 ,  A61B1/07

摘要： In an embodiment an optical arrangement includes a multicore fiber having at least a first fiber core configured to guide a first illumination light and a second fiber core configured to guide a second illumination light, wherein the multicore fiber comprises a fiber scanner configured to deflect the multicore fiber or the multicore fiber is followed by a mirror scanner; and a wavelength dispersive beam combiner configured to spatially superimpose the first illumination light and the second illumination light in an object space.

公开(公告)号：US20210382230A1

公开(公告)日：2021-12-09

申请号：US17406646

申请日：2021-08-19

申请人： NKT PHOTONICS A/S

发明人： Johannes WEIRICH ,  Martin Dybendal MAACK

IPC分类号： G02B6/02 ,  G02B6/024 ,  A61B5/00 ,  G01B9/02 ,  G02B6/28 ,  G02B6/293 ,  G02B21/00 ,  G02B23/24

摘要： A delivery fiber assembly suitable for delivering broad band light and including a delivery fiber and a connector member. The delivery fiber has a length, an input end for launching light, and a delivery end. The delivery fiber includes along its length a core region and a cladding region surrounding the core region, the cladding region includes a cladding background material having a refractive index Nbg and a plurality of microstructures in the form of inclusions of solid material having refractive index up to Ninc and extending in the length of the longitudinal axis of the delivery fiber, wherein Ninc

公开(公告)号：US11137532B2

公开(公告)日：2021-10-05

申请号：US16805801

申请日：2020-03-01

申请人： Pacific Biosciences of California, Inc.

发明人： Annette Grot ,  Shang Wang ,  Hans Callebaut ,  Paul Lundquist ,  Stephen Turner

IPC分类号： G02F1/365 ,  F21V8/00 ,  G02B6/024 ,  G01N21/77 ,  G01N21/64 ,  G02B6/12 ,  G02B6/10 ,  G02B6/122 ,  B82Y15/00 ,  B82Y20/00 ,  G02B23/24

摘要： Optical analytical devices and their methods of use are provided. The devices are useful in the analysis of highly multiplexed optical reactions in large numbers at high densities, including biochemical reactions, such as nucleic acid sequencing reactions. The devices include optical waveguides for illumination of the optical reactions. The devices further provide for the efficient coupling of optical excitation energy from the waveguides to the optical reactions. Optical signals emitted from the reactions can thus be measured with high sensitivity and discrimination using features such as spectra, amplitude, and time resolution, or combinations thereof. The devices of the invention are well suited for miniaturization and high throughput.

公开(公告)号：US20200341190A1

公开(公告)日：2020-10-29

申请号：US16871297

申请日：2020-05-11

申请人： NKT PHOTONICS A/S

发明人： Johannes WEIRICH ,  Martin Dybendal MAACK

IPC分类号： G02B6/02 ,  G02B6/024 ,  A61B5/00 ,  G01B9/02 ,  G02B6/28 ,  G02B6/293 ,  G02B21/00 ,  G02B23/24

摘要： The invention comprises a delivery fiber assembly suitable for delivering broad band light. The delivery fiber assembly comprises a delivery fiber and a connector member. The deliver has a length, an input end for launching light and a delivery end for delivering light, where the delivery fiber comprises along its length a core region and a cladding region surrounding the core region. The cladding region comprises a cladding background material having a refractive index Nbg and a plurality of inclusions of solid material having refractive index up to Ninc and extending in the length of the longitudinal axis of the delivery fiber, wherein Ninc

公开(公告)号：US10761271B2

公开(公告)日：2020-09-01

申请号：US16263627

申请日：2019-01-31

申请人： Chiral Photonics, Inc.

发明人： Victor Il'ich Kopp

IPC分类号： G02B6/28 ,  G02B6/024 ,  G02B6/04 ,  G02B6/24 ,  G02B5/30 ,  G02B6/02 ,  G02B6/27 ,  G02B6/30 ,  G02B6/287

摘要： Advantageously, at least one embodiment of the present disclosure comprises a polarization maintaining PROFA (“PM-PROFA”) coupler in which the polarization axes of the individual vanishing core waveguides thereof are oriented or aligned without the need to adjust the orientation of each individual VC waveguide.