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：US20170144917A1

公开(公告)日：2017-05-25

申请号：US15297534

申请日：2016-10-19

Applicant: Corning Incorporated

Inventor： Sezhian Annamalai ,  Steven Bruce Dawes ,  Carlos Alberto Duran ,  Kenneth Edward Hrdina ,  William Rogers Rosch ,  Bryan Ray Wheaton

IPC: C03C3/089 ,  C03C4/00 ,  C03B25/02

CPC classification number: C03C3/089 ,  C03B19/14 ,  C03B25/02 ,  C03B2201/07 ,  C03B2201/075 ,  C03B2201/10 ,  C03B2201/42 ,  C03C3/06 ,  C03C4/00 ,  C03C23/007 ,  C03C2201/10 ,  C03C2201/12 ,  C03C2201/23 ,  C03C2201/42 ,  C03C2203/54

Abstract: A doped silica-titania (“DST”) glass article that includes a glass article having a glass composition comprising a silica-titania base glass containing titania at 7 to 14 wt. % and a balance of silica, and a dopant selected from the group consisting of (a) F at 0.7 to 1.5 wt. %, (b) B2O3 at 1.5 to 5 wt. %, (c) OH at 1000 to 3000 ppm, and (d) B2O3 at 0.5 to 2.5 wt. % and OH at 100 to 1400 ppm. The glass article has an expansivity slope of less than about 1.3 ppb/K2 at 20° C. For DST glass articles doped with F or B2O3, the OH level can be held to less than 10 ppm, or less than 100 ppm, respectively. In many aspects, the DST glass articles are substantially free of titania in crystalline form.

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：US09586850B2

公开(公告)日：2017-03-07

申请号：US14911506

申请日：2014-07-22

Applicant: Heraeus Quarzglas GmbH & Co. KG

Inventor： Stefan Ochs ,  Klaus Becker ,  Stephan Thomas

IPC: C03C3/06 ,  C03B19/14 ,  G03F1/60 ,  C03C3/00 ,  C03C4/00 ,  G03F1/52

CPC classification number: C03B19/1461 ,  C03B19/1453 ,  C03B2201/075 ,  C03B2201/12 ,  C03B2201/23 ,  C03B2201/42 ,  C03C3/00 ,  C03C3/06 ,  C03C4/0085 ,  C03C2201/12 ,  C03C2201/23 ,  C03C2201/42 ,  C03C2203/46 ,  C03C2203/52 ,  C03C2204/00 ,  G03F1/52 ,  G03F1/60

Abstract: The Ti3+ ions present in Ti-doped silica glass cause a brown staining of the glass, causing inspection of the lens to become more difficult. Known methods for reducing Ti3+ ions in favor of Ti4+ ions in Ti-doped silica glass include a sufficiently high proportion of OH-groups and carrying out an oxygen treatment prior to vitrification, which both have disadvantages. In order to provide a cost-efficient production method for Ti-doped silica glass, which at a hydroxyl group content of less than 120 ppm shows an internal transmittance (sample thickness 10 mm) of at least 70% in the wavelength range of 400 nm to 1000 nm, the TiO2—SiO2 soot body is subjected to a conditioning treatment with a nitrogen oxide prior to vitrification. The blank produced in this way from Ti-doped silica glass has the ratio Ti3+/Ti4+≦5×10−4.

Abstract translation: Ti掺杂的二氧化硅玻璃中存在的Ti3 +离子会引起玻璃的棕色染色，导致镜片检查变得更加困难。 在Ti掺杂的二氧化硅玻璃中减少Ti3 +离子有利于Ti4 +离子的已知方法包括足够高比例的OH基，并在玻璃化之前进行氧处理，这两者都有缺点。 为了提供一种Ti掺杂石英玻璃的成本有效的制造方法，其在羟基含量小于120ppm时，在400nm的波长范围内显示出至少70％的内部透射率（样品厚度10mm） 在玻璃化之前，将TiO 2 -SiO 2烟炱体用氮氧化物进行调理处理。 由Ti掺杂的石英玻璃制成的坯料的比例Ti3 + / Ti4 +≤5×10-4。

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：US20160289116A1

公开(公告)日：2016-10-06

申请号：US14778549

申请日：2014-03-18

Applicant: HERAEYS QUARZGLAS GMBH & CO. KG

Inventor： Andreas LANGNER ,  Gerhard SCHOETZ ,  Mario SUCH ,  Malte SCHWERIN ,  Martin TROMMER ,  Stephan GRIMM ,  Andre KALIDE ,  Martin LEICH ,  Florian JUST

IPC: C03C4/00 ,  C03C3/06 ,  C03B19/12

CPC classification number: C03C4/0071 ,  C03B19/12 ,  C03B2201/12 ,  C03B2201/30 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2201/40 ,  C03C3/06 ,  C03C13/045 ,  C03C2201/12 ,  C03C2201/32 ,  C03C2201/34 ,  C03C2201/3488 ,  C03C2201/36 ,  C03C2201/40 ,  C03C2203/22 ,  C03C2203/54

Abstract: The invention describes a method for the manufacture of quartz glass that comprises not only doping with rare earth elements and/or transition metals, but also fluorination of the quartz glass. The method described presently allows the diffusion of the dopants during fluorination to be prevented. Moreover, the invention relates to the quartz glass that can be obtained according to the method according to the invention and the use thereof as laser-active quartz glass, for generating light-guiding structures, and in optical applications.

Abstract translation: 本发明描述了一种制造石英玻璃的方法，其不仅包括掺杂稀土元素和/或过渡金属，而且包括石英玻璃的氟化。 目前描述的方法允许掺杂剂在氟化期间的扩散被阻止。 此外，本发明涉及根据本发明的方法获得的石英玻璃及其作为激光活性石英玻璃的用途，用于产生导光结构和光学应用。

公开(公告)号：US20160264447A1

公开(公告)日：2016-09-15

申请号：US15035776

申请日：2014-11-06

Applicant: HERAEUS QUARZGLAS GMBH & CO. KG

Inventor： Stefan OCHS ,  Klaus BECKER

IPC: C03B19/14 ,  C03C4/00 ,  G03F1/24 ,  C03C3/06

CPC classification number: C03B19/1461 ,  C03B19/066 ,  C03B19/106 ,  C03B19/1095 ,  C03B19/14 ,  C03B2201/12 ,  C03B2201/42 ,  C03C3/06 ,  C03C4/0085 ,  C03C2201/12 ,  C03C2201/42 ,  C03C2203/40 ,  C03C2203/54 ,  C03C2204/00 ,  G03F1/24

Abstract: A method for producing a blank from titanium-doped, highly silicic-acidic glass having a specified fluorine content for use in EUV lithography is described, in which the thermal expansion coefficient over the operating temperature remains at zero as stably as possible. The course of the thermal expansion coefficient of Ti-doped silica glass depends on a plurality of influencing factors. In addition to the absolute titanium content, the distribution of the titanium is of significant importance, as is the ratio and distribution of additional doping elements, such as fluorine. In the method, fluorine-doped TiO2—SiO2 soot particles are generated and processed further via consolidation and vitrifying into the blank, and, by flame hydrolysis of input substances containing silicon and titanium, TiO2—SiO2-soot particles are formed, exposed to a reagent containing fluorine in a moving powder bed, and converted to the fluorine-doped TiO2—SiO2-soot particles.

Abstract translation: 描述了在EUV光刻中使用具有指定氟含量的钛掺杂的高硅酸性玻璃制造坯料的方法，其中在工作温度下的热膨胀系数尽可能稳定地保持在零。 Ti掺杂石英玻璃的热膨胀系数取决于多个影响因素。 除了绝对的钛含量之外，钛的分布是重要的，附加的掺杂元素如氟的比例和分布也是重要的。 在该方法中，通过固化和玻璃化进一步生成氟掺杂的TiO 2 -SiO 2烟灰颗粒到坯料中，并且通过含硅和钛的输入物质的火焰水解，形成TiO 2 -SiO 2 - 烟灰颗粒，暴露于 在移动的粉末床中含有氟的试剂，并转化成掺杂氟的TiO 2 -SiO 2 - 烟灰颗粒。