公开(公告)号：US20240111087A1

公开(公告)日：2024-04-04

申请号：US18337144

申请日：2023-06-19

申请人： NKT Photonics A/S

发明人： Thomas Tanggaard ALKESKJOLD ,  Casper Laur BYG ,  Christian Jakobsen ,  Jens Kristian LYNGSØE ,  Kim G. JESPERSEN ,  Jeppe JOHANSEN ,  Martin Dybendal MAACK ,  Martin Erland Vestergaard PEDERSEN ,  Carsten L. THOMSEN

IPC分类号： G02B6/036 ,  C03B37/027 ,  C03B37/10 ,  C03C13/04 ,  C03C25/106 ,  C03C25/1065 ,  C03C25/607 ,  G02B6/02 ,  G02B6/14 ,  G02F1/365

CPC分类号： G02B6/03694 ,  C03B37/02781 ,  C03B37/0279 ,  C03B37/10 ,  C03C13/045 ,  C03C13/046 ,  C03C25/1061 ,  C03C25/1062 ,  C03C25/1068 ,  C03C25/607 ,  G02B6/02347 ,  G02B6/02357 ,  G02B6/02361 ,  G02B6/02395 ,  G02B6/14 ,  G02F1/365 ,  C03B2201/02 ,  C03B2201/12 ,  C03B2201/21 ,  C03B2201/22 ,  C03B2203/14 ,  C03B2203/23 ,  C03B2203/42 ,  C03C2201/21 ,  C03C2201/22 ,  G02B6/02366 ,  G02F1/3528

摘要： A Photonic Crystal Fiber (PCF) a method of its production and a supercontinuum light source comprising such PCF. The PCF has a longitudinal axis and includes a core extending along the length of said longitudinal axis and a cladding region surrounding the core. At least the cladding region includes a plurality of microstructures in the form of inclusions extending along the longitudinal axis of the PCF in at least a microstructured length section. In at least a degradation resistant length section of the microstructured length section the PCF includes hydrogen and/or deuterium. In at least the degradation resistant length section the PCF further includes a main coating surrounding the cladding region, which main coating is hermetic for the hydrogen and/or deuterium at a temperature below Th, wherein Th is at least about 50° C., preferably 50° C.

公开(公告)号：US20230168428A1

公开(公告)日：2023-06-01

申请号：US17989988

申请日：2022-11-18

申请人： CORNING INCORPORATED

发明人： Rostislav Radiyevich Khrapko ,  Hazel Benton Matthews, III ,  Pushkar Tandon

IPC分类号： G02B6/02 ,  G02B6/028 ,  C03B37/012

CPC分类号： G02B6/02123 ,  G02B6/0286 ,  C03B37/0122 ,  C03B37/01217 ,  C03B2201/12 ,  C03B2201/06

摘要： An optical fiber includes a core region of silica glass doped with an alkali metal oxide. A depressed-index cladding region surrounds the core region and comprises silica glass doped with a first concentration of fluorine. The depressed-index cladding region has a minimum relative refractive index Δ3min in a range from −0.80% to −0.30%. An outer cladding region comprises silica glass doped with a second, lesser concentration. The outer cladding region has a relative refractive index Δ4, where Δ4−Δ3min>0.05%. The optical fiber has a time-to-peak hydrogen aging value at 23° C. of less than 100 hours upon exposure to an atmosphere having a total pressure of 1 atm and containing a partial pressure of 0.01 atm H2 and a partial pressure of 0.99 atm N2. The optical fiber exhibits an attenuation

公开(公告)号：US20180224598A1

公开(公告)日：2018-08-09

申请号：US15749484

申请日：2016-07-25

申请人： FUJIKURA LTD.

发明人： Yutaka Endoh ,  Tomoaki Toriya ,  Katsuaki Izoe ,  Manabu Kudoh ,  Tsuyoshi Shimomichi

IPC分类号： G02B6/02 ,  C03B37/028 ,  G02B6/04

CPC分类号： G02B6/02042 ,  C03B37/01211 ,  C03B37/028 ,  C03B2201/08 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/21 ,  G02B6/02 ,  G02B6/036 ,  G02B6/04 ,  G02B6/06

摘要： A multicore optical fiber that includes: a core that is formed of silica glass doped with at least fluorine, the core having a relative refractive index difference with respect to a refractive index of silica as a reference being −0.30% to −0.10%; and a clad that is formed of silica glass doped with at least fluorine. The clad includes a first clad surrounding an outer periphery of the core and a second clad provided outside the first clad. A relative refractive index difference between the first clad and the core is 0.8% or more. A refractive index of the second clad is higher than a refractive index of the first clad and lower than a refractive index of the core.

公开(公告)号：US09919956B2

公开(公告)日：2018-03-20

申请号：US15273033

申请日：2016-09-22

申请人： Corning Incorporated

发明人： Xiaoming Luo ,  Chunfeng Zhou

IPC分类号： G02B6/036 ,  C03C13/04 ,  C03B37/027 ,  C03B37/012

CPC分类号： C03C13/046 ,  C03B37/01211 ,  C03B37/01228 ,  C03B37/01248 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/31 ,  C03B2203/224 ,  C03B2203/23 ,  C03C13/045 ,  C03C25/1061 ,  C03C2213/00 ,  G02B6/03627 ,  G02B6/03638 ,  G02B6/0365

摘要： The present disclosure provides optical fiber preforms formed from core canes having large core-clad ratio, intermediate core-cladding assemblies, and methods for making the preforms and core cladding assemblies. The preforms are made from core canes having a contoured end surface. The contoured end surface(s) include a depression that acts to reduce the stress that develops at the junction of the end surface of the core cane with a soot cladding monolith arising from differences in the coefficient of thermal expansions of the core can and soot cladding monolith. The contoured end surface(s) leads to preforms having low defect concentration and low probability of failure during fiber draw.

公开(公告)号：US09902643B2

公开(公告)日：2018-02-27

申请号：US15192590

申请日：2016-06-24

申请人： FURUKAWA ELECTRIC CO., LTD.

发明人： Seiichi Shinada

IPC分类号： C03B37/014

CPC分类号： C03B37/01446 ,  C03B37/01453 ,  C03B2201/12

摘要： A production method of an optical fiber preform includes: forming a porous preform by depositing silica particles at an outer periphery of a core rod; and vitrifying the porous preform by conducting thermal treatment steps. At a first thermal treatment step that is an initial thermal treatment step of the thermal treatment steps, the porous preform is heated so that internal temperatures at two end portions in a longitudinal direction of the porous preform increase before an internal temperature of a center portion in the longitudinal direction increases.

公开(公告)号：US20180016176A1

公开(公告)日：2018-01-18

申请号：US15716084

申请日：2017-09-26

申请人： NIKON CORPORATION

发明人： Toshio YOSHINARI ,  Tadahiko SAITO

IPC分类号： C03B19/14 ,  C03C3/04 ,  C03B23/00 ,  C03C3/06 ,  C03B32/00 ,  C03B23/049 ,  C03B11/00

CPC分类号： C03B19/1415 ,  C03B11/00 ,  C03B19/1453 ,  C03B19/1469 ,  C03B19/1476 ,  C03B19/1492 ,  C03B23/0013 ,  C03B23/0496 ,  C03B32/005 ,  C03B2201/12 ,  C03B2201/42 ,  C03C3/04 ,  C03C3/06 ,  C03C2201/12 ,  C03C2201/42 ,  C03C2203/44 ,  C03C2203/52

摘要： A device for manufacturing SiO2—TiO2 based glass by growing a glass ingot upon a target by a direct method. The device includes the target, comprising a thermal storage portion that accumulates heat by being preheated, and a heat insulating portion that suppresses conduction of heat from the thermal storage portion in a direction opposite to the glass ingot.

公开(公告)号：US20170369359A1

公开(公告)日：2017-12-28

申请号：US15634634

申请日：2017-06-27

申请人： Heraeus Quarzglas GmbH & Co. KG

发明人： Hardy BAIERL ,  Stephan GRIMM ,  Kay SCHUSTER ,  Jan DELLITH ,  Andreas LANGNER ,  Gerhard SCHOETZ ,  Walter LEHMANN ,  Thomas KAYSER

IPC分类号： C03C3/06 ,  C03B20/00 ,  C03B19/06

CPC分类号： C03C3/06 ,  C03B19/066 ,  C03B20/00 ,  C03B32/00 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/34 ,  C03B2201/36 ,  C03C2201/32 ,  C03C2201/3488 ,  C03C2203/52 ,  H01S3/17

摘要： A method for producing rare earth metal-doped quartz glass includes the steps of (a) providing a blank of the rare earth metal-doped quartz glass, and (b) homogenizing the blank by softening the blank zone by zone in a heating zone and by twisting the softened zone along a rotation axis. Some rare earth metals, however, show a discoloration of the quartz glass, which hints at an unforeseeable and undesired change in the chemical composition or possibly at an inhomogeneous distribution of the dopants. To avoid this drawback and to provide a modified method which ensures the production of rare earth metal-doped quartz glass with reproducible properties, during homogenization according to method step (b), the blank is softened under the action of an oxidizingly acting or a neutral plasma.

公开(公告)号：US09846275B2

公开(公告)日：2017-12-19

申请号：US14862648

申请日：2015-09-23

申请人： Corning Incorporated

发明人： Ming-Jun Li ,  Snigdharaj Kumar Mishra ,  Michal Mlejnek ,  William Allen Wood ,  Aramais Robert Zakharian

IPC分类号： H04B10/12 ,  G02B6/02 ,  G02B6/028 ,  G02B6/036 ,  H04B10/2581 ,  H04B10/2543

CPC分类号： G02B6/02019 ,  C03B2201/12 ,  C03B2201/50 ,  C03B2203/22 ,  C03B2203/23 ,  C03B2203/24 ,  G02B6/02023 ,  G02B6/02309 ,  G02B6/0281 ,  G02B6/0288 ,  G02B6/03622 ,  G02B6/03638 ,  G02B6/0365 ,  H04B10/2543 ,  H04B10/2581

摘要： A quasi-single-mode optical fiber with a large effective area is disclosed. The quasi-single-mode fiber has a core with a radius greater than 5 μm, and a cladding section configured to support a fundamental mode and a higher-order mode. The fundamental mode has an effective area greater than 170 μm2 and an attenuation of no greater than 0.17 dB/km at a wavelength of 1530 nm. The higher-order mode has an attenuation of at least 1.0 dB/km at the wavelength of 1530 nm. The quasi-single-mode optical fiber has a bending loss of less than 0.02 dB/turn for a bend diameter of 60 mm for a wavelength of 1625 nm.

公开(公告)号：US20170233282A1

公开(公告)日：2017-08-17

申请号：US15432817

申请日：2017-02-14

申请人： FOMS Inc.

发明人： Leo Volfson ,  Dmitry Starodubov

IPC分类号： C03B37/025 ,  G02B6/02 ,  C03C25/10 ,  C03B37/03 ,  C03B37/029

CPC分类号： C03B37/0253 ,  C03B37/029 ,  C03B37/032 ,  C03B2201/12 ,  C03B2201/82 ,  C03B2205/04 ,  C03B2205/30 ,  C03B2205/40 ,  C03B2205/62 ,  C03B2205/67 ,  C03B2205/72 ,  C03B2205/74 ,  C03C25/106 ,  G02B6/02395 ,  Y02P40/57

摘要： Aspects of the embodiments are directed to systems and methods for forming an optical fiber in a low gravity environment, and an optical fiber formed in a low gravity environment. The system can include a preform holder configured to secure a preform; a heating element secured to a heating element stage and residing adjacent the preform holder; a heating element stage motor configured to move the heating element stage; a tension sensor; a spool; a spool tension motor coupled to the spool and configured to rotate the spool; and a control system communicably coupled to the heating element stage motor and the spool tension motor and configured to control the movement of the heating element stage based on a rotational speed of the spool. The optical fiber can include a fluoride composition, such ZrF4-BaF2-LaF3-AlF3-NaF (ZBLAN), and can be characterized by an insertion loss in a range from 13 dB/1000 km to 120 dB/1000 km.

公开(公告)号：US20170197878A1

公开(公告)日：2017-07-13

申请号：US15471344

申请日：2017-03-28

申请人： Corning Incorporated

发明人： Dana Craig Bookbinder ,  Robert Brett Desorcie ,  Hazel Benton Matthews, III ,  Pushkar Tandon

IPC分类号： C03C25/66 ,  G02B6/036 ,  C03C25/10

CPC分类号： C03C25/66 ,  C03B37/01205 ,  C03B37/01446 ,  C03B37/0146 ,  C03B37/027 ,  C03B2201/10 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/22 ,  C03B2201/31 ,  C03B2201/32 ,  C03B2201/34 ,  C03B2201/42 ,  C03B2203/23 ,  C03B2203/24 ,  C03C3/06 ,  C03C13/045 ,  C03C25/1061 ,  C03C25/1068 ,  C03C2201/11 ,  C03C2201/22 ,  C03C2201/31 ,  C03C2203/54 ,  G02B6/02 ,  G02B6/021 ,  G02B6/03627 ,  G02B6/0365 ,  Y02P40/57

摘要： The present disclosure is directed to a method of making an optical fiber with improved bend performance, the optical fiber having a core and at least one cladding layer, and a chlorine content in the in the last layer of the at least one cladding layer that is greater than 500 ppm by weight. The fiber is prepared using a mixture of a carrier gas, a gaseous chlorine source material and a gaseous reducing agent during the sintering of the last or outermost layer of the at least one cladding layer. The inclusion of the reducing gas into a mixture of the carrier gas and gaseous chlorine material reduces oxygen-rich defects that results in at least a 20% reduction in TTP during hydrogen aging testing.