公开(公告)号：US11708290B2

公开(公告)日：2023-07-25

申请号：US16984379

申请日：2020-08-04

Applicant: Heraeus Quarzglas GmbH & Co. KG

Inventor： Matthias Otter ,  Walter Lehmann ,  Michael Hünermann ,  Nils Christian Nielsen ,  Nigel Robert Whippey ,  Boris Gromann ,  Abdoul-Gafar Kpebane ,  Matthias Söhn

IPC: C03B20/00 ,  C03B37/012 ,  C03C3/06 ,  C03B17/04 ,  C03B19/10 ,  C03C12/00 ,  C03C1/02 ,  C03B37/027

CPC classification number: C03B20/00 ,  C03B17/04 ,  C03B19/106 ,  C03B19/1095 ,  C03B37/01211 ,  C03B37/027 ,  C03C1/022 ,  C03C1/026 ,  C03C3/06 ,  C03C12/00 ,  C03B2201/04 ,  C03C2201/02 ,  C03C2201/11 ,  C03C2201/23 ,  C03C2201/26 ,  C03C2201/32 ,  C03C2201/40 ,  C03C2201/54 ,  C03C2203/10 ,  C03C2203/40 ,  C03C2203/44 ,  C03C2203/50

Abstract: One aspect relates to a process for the preparation of a quartz glass body, including providing a silicon dioxide granulate, wherein the silicon dioxide granulate was made from pyrogenic silicon dioxide powder and the silicon dioxide granulate has a BET surface area in a range from 20 to 40 m2/g, making a glass melt out of silicon dioxide granulate in an oven and making a quartz glass body out of at least part of the glass melt. The oven has at least a first and a further chamber connected to one another via a passage. The temperature in the first chamber is lower than the temperature in the further chambers. On aspect relates to a quartz glass body which is obtainable by this process. One aspect relates to a light guide, an illuminant and a formed body, which are each obtainable by further processing of the quartz glass body.

公开(公告)号：US20180105452A1

公开(公告)日：2018-04-19

申请号：US15559958

申请日：2016-03-22

Applicant: Corning Incorporated

Inventor： Sezhian Annamalai

IPC: C03C10/00 ,  C03C3/06 ,  C03C3/076 ,  G03F1/60 ,  B32B17/06 ,  C03B19/06 ,  C03B23/203 ,  C03B32/02

CPC classification number: C03C10/0009 ,  B32B3/28 ,  B32B5/16 ,  B32B5/30 ,  B32B7/04 ,  B32B17/06 ,  B32B37/04 ,  B32B2260/025 ,  B32B2260/04 ,  B32B2264/101 ,  B32B2264/102 ,  B32B2264/12 ,  B32B2307/30 ,  B32B2307/416 ,  B32B2307/704 ,  B32B2307/732 ,  B32B2551/00 ,  C03B19/066 ,  C03B23/203 ,  C03B32/02 ,  C03B2201/06 ,  C03B2201/42 ,  C03C3/06 ,  C03C3/076 ,  C03C27/06 ,  C03C2201/10 ,  C03C2201/11 ,  C03C2201/12 ,  C03C2201/23 ,  C03C2201/28 ,  C03C2201/42 ,  C03C2203/50 ,  C03C2203/52 ,  C03C2204/00 ,  G02B1/00 ,  G02B5/0891 ,  G03F1/60

Abstract: A glass composite for use in Extreme Ultra-Violet Lithography (EUVL) is provided. The glass composite includes a first silica-titania glass section. The glass composite further includes a second doped silica-titania glass section mechanically bonded to a surface of the first silica-titania glass section, wherein the second doped silica-titania glass section has a thickness of greater than about 1.0 inch.

公开(公告)号：US09919955B2

公开(公告)日：2018-03-20

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: G02B6/36 ,  C03C13/04 ,  C03B37/012 ,  C03C3/06 ,  C03C4/10 ,  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−1, 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.

公开(公告)号：US09802858B2

公开(公告)日：2017-10-31

申请号：US15096821

申请日：2016-04-12

Applicant: Corning Incorporated

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

IPC: G02B6/028 ,  C03C13/04 ,  G02B6/02 ,  G02B6/036 ,  C03C3/06 ,  C03B37/014

CPC classification number: C03C13/046 ,  C03B37/014 ,  C03B37/01446 ,  C03B37/01453 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2203/23 ,  C03C3/06 ,  C03C13/045 ,  C03C2201/11 ,  C03C2201/12 ,  G02B6/02019 ,  G02B6/0281 ,  G02B6/0288 ,  G02B6/03627 ,  G02B6/03655 ,  G02B6/03683

Abstract: A co-doped optical fiber is provided having an attenuation of less than about 0.17 dB/km at a wavelength of 1550 nm. The fiber includes a core region in the fiber having a graded refractive index profile with an alpha of greater than 5. The fiber also includes a first cladding region in the fiber that surrounds the core region. Further, the core region has an relative refractive index of about −0.10% to about +0.05% compared to pure silica. In addition, the core region includes silica that is co-doped with chlorine at about 1.2% or greater by weight and fluorine between about 0.1% and about 1% by weight.

公开(公告)号：US09658395B2

公开(公告)日：2017-05-23

申请号：US14825297

申请日：2015-08-13

Applicant: OFS Fitel, LLC

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

IPC: G02B6/036 ,  C03B37/027 ,  C03B37/014 ,  C03B37/018 ,  C03C13/04 ,  G02B6/02

CPC classification number: G02B6/0365 ,  C03B37/01446 ,  C03B37/01453 ,  C03B37/01853 ,  C03B37/01861 ,  C03B37/01869 ,  C03B37/01892 ,  C03B37/027 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2203/22 ,  C03B2203/222 ,  C03B2203/223 ,  C03B2205/40 ,  C03B2205/42 ,  C03C13/045 ,  C03C2201/11 ,  C03C2201/12 ,  C03C2203/44 ,  C03C2203/46 ,  G02B6/02019 ,  G02B6/03683 ,  G02B6/03694 ,  Y02P40/57

Abstract: The core region of an optical fiber is doped with chlorine in a concentration that allows for the viscosity of the core region to be lowered, approaching the viscosity of the surrounding cladding. An annular interface region is disposed between the core and cladding and contains a concentration of fluorine dopant sufficient to match the viscosity of the core. By including this annular stress accommodation region, the cladding layer can be formed to include the relatively high concentration of fluorine required to provide the desired degree of optical signal confinement (i.e., forming a “low loss” optical fiber).

公开(公告)号：US20170139130A1

公开(公告)日：2017-05-18

申请号：US14944798

申请日：2015-11-18

Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.

Inventor： Kazuhiro YONEZAWA ,  Tadashi ENOMOTO

IPC: G02B6/028 ,  G02B6/02 ,  C03C13/04 ,  G02B6/036

CPC classification number: G02B6/0288 ,  C03C13/045 ,  C03C2201/10 ,  C03C2201/11 ,  C03C2201/12 ,  C03C2201/28 ,  C03C2201/31 ,  G02B6/02214 ,  G02B6/03627 ,  G02B6/0365

Abstract: The present invention relates to an MMF with a structure for relaxing wavelength dependence of transmission bandwidth. In the MMF, a doping amount of a dopant for control of refractive index is adjusted, so as to make each of an OFL bandwidth at a wavelength of 850 nm and an OFL bandwidth at a wavelength of at least one of 980 nm, 1060 nm, and 1300 nm become not less than 1500 MHz·km, make the OFL bandwidth at the wavelength of at least one of 980 nm, 1060 nm, and 1300 nm become wider than the OFL bandwidth at the wavelength of 850 nm, and effectively suppress increase in transmission loss.

公开(公告)号：US20170101334A1

公开(公告)日：2017-04-13

申请号：US15384853

申请日：2016-12-20

Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.

Inventor： Tetsuya HARUNA ,  Masaaki HIRANO ,  Yoshiaki TAMURA ,  Yuki KAWAGUCHI

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

CPC classification number: C03B37/01211 ,  C03B37/01228 ,  C03B37/01245 ,  C03B37/01248 ,  C03B37/01446 ,  C03B37/018 ,  C03B37/01807 ,  C03B37/01869 ,  C03B37/01892 ,  C03B2201/075 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/50 ,  C03B2203/22 ,  C03B2203/29 ,  C03B2203/34 ,  C03C3/06 ,  C03C13/045 ,  C03C2201/11 ,  C03C2201/12 ,  C03C2201/23 ,  C03C2201/50 ,  Y02P40/57

Abstract: The present invention relates to a method of manufacturing an optical fiber preform for obtaining an optical fiber with low transmission loss. A core preform included in the optical fiber preform comprises three or more core portions, which are each produced by a rod-in-collapse method, and in which both their alkali metal element concentration and chlorine concentration are independently controlled. In two or more manufacturing steps of the manufacturing steps for each of the three or more core portions, an alkali metal element is added. As a result, the mean alkali metal element concentration in the whole core preform is controlled to 7 atomic ppm or more and 70 atomic ppm or less.

公开(公告)号：US09575245B2

公开(公告)日：2017-02-21

申请号：US14943190

申请日：2015-11-17

Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.

Inventor： Yoshiaki Tamura ,  Tetsuya Haruna ,  Yoshihiro Saito ,  Yuki Kawaguchi ,  Masaaki Hirano

IPC: G02B6/036 ,  G02B6/02 ,  C03B37/012 ,  C03B37/014 ,  C03B37/018 ,  C03C3/06 ,  C03C13/04

CPC classification number: G02B6/02 ,  C03B37/01211 ,  C03B37/014 ,  C03B37/01807 ,  C03B37/01861 ,  C03B37/01892 ,  C03B2201/06 ,  C03B2201/07 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/50 ,  C03B2203/22 ,  C03B2203/26 ,  C03B2205/40 ,  C03C3/06 ,  C03C13/045 ,  C03C2201/11 ,  C03C2201/12 ,  C03C2201/50 ,  C03C2203/40

Abstract: An optical fiber containing an alkali metal and capable of reducing Rayleigh scattering loss is provided. An optical fiber has a core and a cladding made of silica glass and enclosing the core. The cladding contains fluorine and has a refractive index lower than the refractive index of the core. The core contains first group dopants selected from the group of Na element, K element, or a compound thereof at an average concentration of 0.2 ppm or more and 10 ppm or less. The core also contains second group dopants for reducing the viscosity of silica glass and having a diffusion coefficient of 1×10−12 cm2/s or more and smaller than the diffusion coefficient of the first group dopants, by an average concentration of 0.2 ppm or more at a temperature of 2000° C. to 2300° C.

Abstract translation: 提供含有碱金属并能够降低瑞利散射损耗的光纤。 光纤具有由石英玻璃制成的芯和包层，并且包围芯。 包层含氟，折射率低于芯的折射率。 核心包含平均浓度为0.2ppm以上且10ppm以下的选自Na元素，K元素或其化合物的第一族掺杂剂。 该芯还含有第二组掺杂剂，用于降低石英玻璃的粘度，并且扩散系数为1×10-12cm2 / s以上且小于第一组掺杂剂的扩散系数，平均浓度为0.2ppm或 更高温度在2000°C至2300°C

公开(公告)号：US20160304392A1

公开(公告)日：2016-10-20

申请号：US15096821

申请日：2016-04-12

Applicant: Corning Incorporated

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

IPC: C03C13/04 ,  G02B6/036 ,  G02B6/028

CPC classification number: C03C13/046 ,  C03B37/014 ,  C03B37/01446 ,  C03B37/01453 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2203/23 ,  C03C3/06 ,  C03C13/045 ,  C03C2201/11 ,  C03C2201/12 ,  G02B6/02019 ,  G02B6/0281 ,  G02B6/0288 ,  G02B6/03627 ,  G02B6/03655 ,  G02B6/03683

Abstract: A co-doped optical fiber is provided having an attenuation of less than about 0.17 dB/km at a wavelength of 1550 nm. The fiber includes a core region in the fiber having a graded refractive index profile with an alpha of greater than 5. The fiber also includes a first cladding region in the fiber that surrounds the core region. Further, the core region has an effective refractive index of about −0.10% to about +0.05% compared to pure silica. In addition, the core region includes silica that is co-doped with chlorine at about 1.2% or greater by weight and fluorine between about 0.1% and about 1% by weight.

Abstract translation: 提供了共掺杂光纤，其在1550nm的波长处具有小于约0.17dB / km的衰减。 光纤包括光纤中的纤芯区域，其具有α大于5的渐变折射率分布。该光纤还包括围绕芯区域的纤维中的第一包层区域。 此外，与纯二氧化硅相比，芯区域具有约-0.10％至约+ 0.05％的有效折射率。 此外，核心区域包括二氧化硅，其以约1.2％或更高的重量和约0.1％至约1％重量的氟共掺杂氯。

公开(公告)号：US20160009588A1

公开(公告)日：2016-01-14

申请号：US14734104

申请日：2015-06-09

Applicant: Corning Incorporated

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

IPC: C03B37/012 ,  G02B6/02 ,  C03B37/027

CPC classification number: 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

Abstract: 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.

Abstract translation: 本公开涉及一种制造具有改善的弯曲性能的光纤的方法，所述光纤具有芯和至少一个包覆层，以及在所述至少一个包覆层的最后层中的氯含量为 大于500ppm重量。 在至少一个包覆层的最后层或最外层的烧结期间，使用载气，气态氯源材料和气态还原剂的混合物来制备纤维。 将还原气体包含在载气和气态氯物质的混合物中可以减少富氧缺陷，导致氢老化试验期间TTP至少降低20％。