公开(公告)号：US20240360025A1

公开(公告)日：2024-10-31

申请号：US18638912

申请日：2024-04-18

Applicant: CORNING INCORPORATED

Inventor： Steven Treavis Arndt ,  Ilia Andreyevich Nikulin ,  Nikolay Anatolyevich Panin ,  Sergey Nikolaevich Shubin

IPC: C03B37/018 ,  C03B37/027

CPC classification number: C03B37/01853 ,  C03B37/027

Abstract: A method of manufacturing including: with a porous glass body having a surface and a density at the surface having been loaded into a furnace with heating elements disposed along a length of the porous glass body, a first heat treatment step comprising activating the heating elements until the porous glass body at an inner surface of the porous glass body facing a centerline of the porous glass body has a first temperature that is greater than or equal to 1250° C. for a first period of time greater than or equal to 1 hour; wherein, as a result of the first heat treatment step, the density of the porous glass body at the surface increases but is less than 85% of a closed pore density of a sintered glass preform made from the porous glass body.

公开(公告)号：US20240034667A1

公开(公告)日：2024-02-01

申请号：US18377484

申请日：2023-10-06

Applicant: CORNING INCORPORATED

Inventor： Steven Bruce Dawes ,  Douglas Hull Jennings ,  Pushkar Tandon

IPC: C03C3/06 ,  C03B19/14 ,  C03B37/014 ,  C03B19/06 ,  C03B25/02 ,  C03B37/012 ,  C03B37/018 ,  G02B6/036

CPC classification number: C03C3/06 ,  C03B19/1453 ,  C03B19/1461 ,  C03B37/01453 ,  C03B37/01446 ,  C03B19/066 ,  C03B25/02 ,  C03B37/01282 ,  C03B37/014 ,  C03B37/01853 ,  G02B6/036 ,  C03B2201/12 ,  C03B2201/42 ,  C03B2201/20 ,  C03B2201/075

Abstract: A method of forming an optical element is provided. The method includes producing silica-based soot particles using chemical vapor deposition, the silica-based soot particles having an average particle size of between about 0.05 μm and about 0.25 μm. The method also includes forming a soot compact from the silica-based soot particles and doping the soot compact with a halogen in a closed system by contacting the silica-based soot compact with a halogen-containing gas in the closed system at a temperature of less than about 1200° C.

公开(公告)号：US11780762B2

公开(公告)日：2023-10-10

申请号：US16081244

申请日：2016-03-03

Applicant: Prysmian S.p.A.

Inventor： Cedric Gonnet ,  Antonio Adigrat ,  Franco Cocchini ,  Antonio Schiaffo ,  Igor Milicevic ,  Mattheus Jacobus Nicolaas Van Stralen ,  Gertjan Krabshuis

IPC: C03B37/018 ,  C03B37/012 ,  C03B37/014 ,  C03B37/027

CPC classification number: C03B37/0183 ,  C03B37/01291 ,  C03B37/01294 ,  C03B37/01446 ,  C03B37/01453 ,  C03B37/01473 ,  C03B37/01493 ,  C03B37/01853 ,  C03B37/01869 ,  C03B37/01892 ,  C03B37/027 ,  C03B2201/12 ,  C03B2201/31 ,  C03B2203/23 ,  C03B2203/24

Abstract: The present invention relates to a method for manufacturing a preform for optical fibers, which method comprises the sequential steps of: i) deposition of non-vitrified silica layers on the inner surface of a hollow substrate tube; ii) deposition of vitrified silica layers inside the hollow substrate tube on the inner surface of the non-vitrified silica layers deposited in step i); iii) removal of the hollow substrate tube from the vitrified silica layers deposited in step ii) and the non-vitrified silica layers deposited in step i) to obtain a deposited tube; iv) optional collapsing said deposited tube obtained in step iii) to obtain a deposited rod comprising from the periphery to the center at least one inner optical cladding and an optical core; v) preparation of an intermediate layer by the steps of: * deposition of non-vitrified silica layers on the outside surface of the deposited tube obtained in step iii) or deposited rod obtained in step iv) with a flame hydrolysis process in an outer reaction zone using glass-forming precursors, and subsequently; * drying and consolidating said non-vitrified silica layers into a vitrified fluorine-doped silica intermediate cladding layer; and * in case preceding step iv) was omitted collapsing; to provide a solid rod comprising from the periphery to the center the intermediate layer, at least one inner optical cladding and an optical core; wherein a fluorine-comprising gas is used during the deposition and/or drying and/or consolidating and wherein the intermediate layer has a ratio between the outer diameter of the intermediate cladding layer (C) to the outer diameter of the optical core (A) that is at least 3.5; vi) deposition of natural silica on the outside surface of the intermediate cladding layer of the solid rod obtained in step v) by melting natural silica particles in an outer deposition zone to produce an outer cladding whereby a preform is obtained.

公开(公告)号：US20170362115A1

公开(公告)日：2017-12-21

申请号：US15529583

申请日：2015-11-24

Applicant: Corning Incorporated

Inventor： Steven Bruce Dawes ,  Douglas Hull Jennings ,  Pushkar Tandon

IPC: C03C3/06 ,  C03B37/014 ,  C03B25/02 ,  C03B19/14 ,  C03B37/012 ,  G02B6/036 ,  C03B37/018

CPC classification number: C03C3/06 ,  C03B19/066 ,  C03B19/1453 ,  C03B19/1461 ,  C03B25/02 ,  C03B37/01282 ,  C03B37/014 ,  C03B37/01446 ,  C03B37/01453 ,  C03B37/01853 ,  C03B2201/075 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/42 ,  G02B6/036

Abstract: A method of forming an optical element is provided. The method includes producing silica-based soot particles using chemical vapor deposition, the silica-based soot particles having an average particle size of between about 0.05 μm and about 0.25 μm. The method also includes forming a soot compact from the silica-based soot particles and doping the soot compact with a halogen in a closed system by contacting the silica-based soot compact with a halogencontaining gas in the closed system at a temperature of less than about 1200° C.

公开(公告)号：US20170168231A1

公开(公告)日：2017-06-15

申请号：US15444687

申请日：2017-02-28

Applicant: Corning Incorporated

Inventor： George Edward Berkey ,  Dana Craig Bookbinder ,  Ming-Jun Li ,  Pushkar Tandon

IPC: G02B6/02 ,  C03C13/04 ,  C03B37/014 ,  G02B6/036 ,  C03B37/018

CPC classification number: G02B6/02014 ,  C03B37/01205 ,  C03B37/01211 ,  C03B37/01262 ,  C03B37/01282 ,  C03B37/01413 ,  C03B37/01433 ,  C03B37/01446 ,  C03B37/01453 ,  C03B37/018 ,  C03B37/01815 ,  C03B37/0183 ,  C03B37/01838 ,  C03B37/01853 ,  C03B37/01869 ,  C03B2201/08 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/24 ,  C03B2203/22 ,  C03B2203/23 ,  C03B2203/24 ,  C03B2205/42 ,  C03B2207/30 ,  C03C13/045 ,  C03C13/046 ,  C03C25/1061 ,  C03C2201/11 ,  C03C2201/12 ,  C03C2203/54 ,  C03C2213/00 ,  G02B6/02019 ,  G02B6/03627

Abstract: An optical fiber having a core comprising silica and greater than 1.5 wt % chlorine and less than 0.5 wt % F, said core having a refractive index Δ1MAX, and a inner cladding region having refractive index Δ2MIN surrounding the core, where Δ1MAX>Δ2MIN.

公开(公告)号：US20170022094A1

公开(公告)日：2017-01-26

申请号：US15086169

申请日：2016-03-31

Applicant: OFS Fitel, LLC

Inventor： Man F. Yan ,  Peter I. Borel ,  Tommy Geisler ,  Rasmus V. Jensen ,  Ole A. Levring ,  Jorgen Ostgaard Olsen ,  David W. Peckham ,  Dennis J. Trevor ,  Patrick W. Wisk ,  Benyuan Zhu

IPC: C03C13/04 ,  C03B37/027 ,  G02B6/036

CPC classification number: C03C13/046 ,  C03B37/01208 ,  C03B37/01853 ,  C03B37/027 ,  C03B2201/07 ,  C03B2201/08 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/28 ,  C03B2201/50 ,  C03B2203/223 ,  C03B2203/23 ,  C03C3/06 ,  C03C4/10 ,  C03C13/045 ,  C03C2201/11 ,  C03C2201/12 ,  C03C2201/28 ,  C03C2201/50 ,  G02B6/03627 ,  G02B6/0365

Abstract: An optical fiber has a core region that is doped with one or more viscosity-reducing dopants in respective amounts that are configured, such that, in a Raman spectrum with a frequency shift of approximately 600 cm−, the fiber has a nanoscale structure having an integrated D2 line defect intensity of less than 0.025. Alternatively, the core region is doped with one or more viscosity-reducing dopants in respective amounts that are configured such that the fiber has a residual axial compressive stress with a stress magnitude of more than 20 MPa and a stress radial extent between 2 and 7 times the core radius.According to another aspect of the invention a majority of the optical propagation through the fiber is supported by an identified group of fiber regions comprising the core region and one or more adjacent cladding regions. The fiber regions are doped with one or more viscosity-reducing dopants in respective amounts and radial positions that are configured to achieve viscosity matching among the fiber regions in the identified group.

Abstract translation: 根据本发明的另一方面，通过光纤的大部分光学传播由包括芯区域和一个或多个相邻包层区域的所识别的纤维区域组支撑。 纤维区域掺杂有相应量和径向位置中的一种或多种降低粘度的掺杂剂，其被配置为实现所识别的组中的纤维区域之间的粘度匹配。

公开(公告)号：US09120693B2

公开(公告)日：2015-09-01

申请号：US13273495

申请日：2011-10-14

Applicant: Brett Jason Hoover ,  Ming-Jun Li

Inventor： Brett Jason Hoover ,  Ming-Jun Li

IPC: G02B6/44 ,  G02B6/02 ,  C03B37/014 ,  C03B37/012 ,  C03C25/10 ,  G02B6/028 ,  G02B6/036

CPC classification number: C03B37/027 ,  C03B37/01211 ,  C03B37/01222 ,  C03B37/01282 ,  C03B37/0142 ,  C03B37/01446 ,  C03B37/01493 ,  C03B37/01853 ,  C03B2201/31 ,  C03B2203/04 ,  C03B2203/22 ,  C03B2203/23 ,  C03B2203/24 ,  C03B2203/34 ,  C03C25/1065 ,  G02B6/02042 ,  G02B6/02395 ,  G02B6/0288 ,  G02B6/03627 ,  G02B6/4403

Abstract: Multi-core optical fiber ribbons and methods for making multi-core optical fiber ribbons are described herein. In one embodiment, a multi-core optical fiber ribbon includes at least two core members formed from silica-based glass and oriented in parallel with one another in a single plane. Adjacent core members have a center-to-center spacing ≧15 microns and a cross-talk between adjacent core members is ≦−25 dB. In this embodiment each core member is single-moded with an index of refraction nc, and a core diameter dc. In an alternative embodiment, each core member is multi-moded and the center-to-center spacing between adjacent core members is ≧25 microns. A single cladding layer is formed from silica-based glass and surrounds and is in direct contact with the core members. The single cladding layer is substantially rectangular in cross section with a thickness ≦400 microns and an index of refraction nc1≦nc.

Abstract translation: 本文描述了用于制造多芯光纤带的多芯光纤带和方法。 在一个实施例中，多芯光纤带包括由二氧化硅基玻璃形成并且在单个平面中彼此平行取向的至少两个芯构件。 相邻的芯构件具有≥15微米的中心间距，并且相邻芯构件之间的串扰为-12dB。 在该实施例中，每个芯体单独具有折射率nc和芯直径dc。 在替代实施例中，每个芯构件是多模的，并且相邻芯构件之间的中心到中心的间隔为≥25微米。 单个包层由二氧化硅基玻璃形成并且包围并与核心部件直接接触。 单层包层的横截面基本为矩形，厚度为n1E; 400微米，折射率nc1＆nlE; nc。

公开(公告)号：US08712202B2

公开(公告)日：2014-04-29

申请号：US12892752

申请日：2010-09-28

Applicant: Paul E. Sanders ,  Edward M. Dowd ,  Brian J. Pike

Inventor： Paul E. Sanders ,  Edward M. Dowd ,  Brian J. Pike

IPC: G02B6/04

CPC classification number: G02B6/03605 ,  C03B37/01853 ,  C03B2201/02 ,  C03B2201/12 ,  C03B2201/20 ,  G02B6/03627 ,  Y02P40/57

Abstract: Methods and apparatus relate to optical fibers suitable for use in sensing applications exposed to radiation environments. The fibers include a core of pure silica or chlorine doped silica surrounded by a fluorinated silica cladding. These glasses for the core and cladding utilize dopants that resist radiation-induced attenuation. A two step process for forming the cladding can achieve necessary concentrations of the fluorine by performing a soot deposition process in a different environment from a consolidation process where the soot is sintered into a glass. Concentration of fluorine doped into the cladding layer enables obtaining a numerical aperture that confines a mono-mode of the fiber to resist bend-induced attenuation. Dimensions of the fiber further facilitate bending ability of the fiber.

Abstract translation: 方法和装置涉及适用于感测暴露于辐射环境的应用的光纤。 纤维包括由氟化石英包层包围的纯二氧化硅核心或掺杂氯的二氧化硅。 用于芯和包层的这些玻璃利用了抵抗辐射诱导衰减的掺杂剂。 用于形成包层的两步法可以通过在将烟灰烧结成玻璃的固结方法的不同环境中进行烟灰沉积工艺来实现必需的氟浓度。 掺入包层的氟的浓度使得能够获得限制纤维的单模以抵抗弯曲诱导的衰减的数值孔径。 纤维尺寸进一步提高了纤维的弯曲能力。

公开(公告)号：US20120189262A1

公开(公告)日：2012-07-26

申请号：US13352644

申请日：2012-01-18

Applicant: Masaaki HIRANO ,  Tetsuya Haruna ,  Yoshiaki Tamura

Inventor： Masaaki HIRANO ,  Tetsuya Haruna ,  Yoshiaki Tamura

IPC: G02B6/00 ,  C03C13/04 ,  C03B37/012

CPC classification number: C03B37/01807 ,  C03B37/01853 ,  C03B2201/07 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/50 ,  Y10T428/294

Abstract: An optical fiber preform includes a core portion, in which the core portion includes an alkali-metal-doped core glass portion doped with an alkali metal, the maximum concentration of oxygen molecules in the core portion is 30 mol ppb or more, and the average concentration of the alkali metal in the core portion is 5 atomic ppm or more. A method of manufacturing an optical fiber preform includes an alkali-metal-doping step of doping a pipe composed of silica-based glass with an alkali metal, an oxygen-molecule-doping step of doping the glass pipe with oxygen molecules, and a collapsing step of collapsing the glass pipe by heating the glass pipe, in which the optical fiber preform is manufactured.

Abstract translation: 光纤预制棒包括芯部，芯部包括掺杂有碱金属的碱金属掺杂的芯玻璃部分，芯部中的氧分子的最大浓度为30mol ppb以上，平均 芯部中的碱金属的浓度为5原子ppm以上。 制造光纤预制棒的方法包括：碱金属掺杂步骤，用碱金属掺杂由二氧化硅基玻璃构成的管，用氧分子掺杂玻璃管的氧分子掺杂步骤，以及塌陷 通过加热其中制造光纤预制棒的玻璃管来塌缩玻璃管的步骤。

公开(公告)号：US20110138861A1

公开(公告)日：2011-06-16

申请号：US12638528

申请日：2009-12-15

Applicant: Daniel Homa ,  Charles Giebner

Inventor： Daniel Homa ,  Charles Giebner

IPC: C03B37/075

CPC classification number: C03B37/01815 ,  C03B37/01853 ,  C03B2201/10 ,  C03B2201/12 ,  C03B2201/28 ,  C03B2201/30 ,  C03B2201/31 ,  C03B2201/32 ,  C03B2201/34 ,  C03B2201/40 ,  C03B2201/42

Abstract: A method of manufacturing an optical fiber includes: disposing an axially extending preform structure on a support structure; directing a gas mixture along a major axis of the preform structure in a first axial direction; disposing a heating device proximate to the preform structure; and activating the heating device and moving the heating device along the major axis in a second axial direction to heat the preform structure and deposit at least one layer of material on the preform structure, the second axial direction being opposite to the first axial direction.

Abstract translation: 制造光纤的方法包括：将轴向延伸的预制结构设置在支撑结构上; 沿第一轴向沿预成型结构的长轴引导气体混合物; 将加热装置设置在靠近预成型结构的位置; 激活所述加热装置并且沿着所述长轴沿着第二轴向移动所述加热装置，以加热所述预成型结构并将至少一层材料沉积在所述预成型结构上，所述第二轴向方向与所述第一轴向方向相反。