公开(公告)号：US08789393B2

公开(公告)日：2014-07-29

申请号：US11288311

申请日：2005-11-29

Applicant: Nobuaki Orita ,  Akihiro Kanao ,  Hideya Moridaira

Inventor： Nobuaki Orita ,  Akihiro Kanao ,  Hideya Moridaira

IPC: C03B37/018

CPC classification number: G02B6/02395 ,  C03B37/01211 ,  C03B37/01245 ,  C03B37/01257 ,  C03B37/01446 ,  C03B37/01453 ,  C03B37/0146 ,  C03B37/02754 ,  C03B37/02772 ,  C03B37/029 ,  C03B2201/04 ,  C03B2201/12 ,  C03B2203/22 ,  Y02P40/57

Abstract: A porous layer is formed by depositing a silica glass particle around a core rod. The porous layer is dehydrated. The dehydrated porous layer is sintered under a decreased pressure until the dehydrated porous layer becomes a translucent glass layer containing a closed pore. The translucent glass layer is vitrified under an ambient atmosphere including an inert gas other than a helium gas.

Abstract translation: 通过在芯棒周围沉积石英玻璃颗粒来形成多孔层。 多孔层脱水。 脱水多孔层在减压下烧结直到脱水多孔层成为含有闭孔的半透明玻璃层。 半透明玻璃层在包括氦气以外的惰性气体的环境气氛下被玻璃化。

公开(公告)号：US08563620B2

公开(公告)日：2013-10-22

申请号：US13123350

申请日：2009-10-01

Applicant: Mohamed Bouazaoui ,  Bruno Capoen ,  Hicham El-Hamzaoui ,  Laurent Bigot ,  Géraud Bouwmans

Inventor： Mohamed Bouazaoui ,  Bruno Capoen ,  Hicham El-Hamzaoui ,  Laurent Bigot ,  Géraud Bouwmans

IPC: C03B19/12 ,  C03C3/06

CPC classification number: C03B19/12 ,  C03B37/016 ,  C03B2201/04 ,  C03B2203/42 ,  C03C1/006 ,  C03C3/06

Abstract: The process for the synthesis of a silica monolith comprises the following steps: hydrolysis of a silicon alkoxide in order to form a hydrolysis precursor followed by a condensation of said hydrolysis precursor in the presence of an organic solvent, in the presence of water and of a basic catalyst in order to form oligomeric clusters containing several silicon atoms; dispersion of said oligomeric clusters in a solution in order to form a sol; polymerization of the sol in order to obtain a gel via a first heat treatment, at a temperature below the boiling point of the constituents of the sol; drying of the gel via a second heat treatment; conversion of the gel to a xerogel via a third heat treatment; dehydration and densification of the xerogel until the silica monolith is obtained via a fourth heat treatment.

Abstract translation: 用于合成二氧化硅整料的方法包括以下步骤：水解硅烷醇以形成水解前体，随后在有机溶剂存在下，在水和有机溶剂存在下使所述水解前体缩合 碱性催化剂，以形成含有几个硅原子的低聚簇; 将所述低聚簇分散在溶液中以形成溶胶; 在低于溶胶成分的沸点的温度下通过第一热处理获得凝胶的溶胶的聚合; 通过第二次热处理干燥凝胶; 通过第三次热处理将凝胶转化为干凝胶; 干凝胶的脱水和致密化直到通过第四次热处理获得二氧化硅整料。

公开(公告)号：US08541326B2

公开(公告)日：2013-09-24

申请号：US13459624

申请日：2012-04-30

Applicant: Ryusuke Morita ,  Takuya Nakagawa ,  Kei Iwata ,  Masaaki Takata

Inventor： Ryusuke Morita ,  Takuya Nakagawa ,  Kei Iwata ,  Masaaki Takata

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

CPC classification number: C03C3/06 ,  C03B19/1453 ,  C03B2201/03 ,  C03B2201/04 ,  C03C4/0085 ,  C03C2201/21 ,  C03C2201/23 ,  G03F1/50 ,  G03F7/70958 ,  Y02P40/57

Abstract: The present invention relates to an optical member for deep ultraviolet having a wavelength of 250 nm or shorter, containing a synthetic silica glass which does not substantially contain a halogen element, has a maximum OH group content of less than 10 ppm by weight, has contents of ODC (oxygen deficient centers) and E-prime center of each less than 1×1014 cm−3, does not substantially contain SiH and peroxy linkage, and has a fictive temperature of 1,050° C. or lower.

Abstract translation: 本发明涉及一种波长为250nm以下的深紫外线用光学构件，其含有基本上不含卤素元素的合成石英玻璃，其OH基含量的最大值小于10重量ppm，含有 的ODC（缺氧中心）和E-prime中心各自小于1×1014cm-3，基本上不含有SiH和过氧键，并且具有1050℃或更低的假想温度。

公开(公告)号：US20120182622A1

公开(公告)日：2012-07-19

申请号：US13367780

申请日：2012-02-07

Applicant: Masaaki TAKATA ,  Long Shao ,  Kei Iwata ,  Tomonori Ogawa

Inventor： Masaaki TAKATA ,  Long Shao ,  Kei Iwata ,  Tomonori Ogawa

IPC: G02B27/12 ,  C03B25/00 ,  B82Y20/00

CPC classification number: C03B19/1453 ,  C03B2201/04 ,  G03F7/70966 ,  Y02P40/57

Abstract: The present invention provides a synthetic silica glass for an optical member in which not only a fast axis direction in an optical axis direction is controlled, and a birefringence in an off-axis direction is reduced, but a magnitude of a birefringence in the optical axis direction is controlled to an arbitrary value, such that an average value of a value BR cos 2θxy defined from a birefringence BR and a fast axis direction θxy as measured from a parallel direction to the principal optical axis direction is defined as an average birefringence AveBR cos 2θxy, and when a maximum value of a birefringence measured from a vertical direction to the principal optical axis direction of the optical member is defined as a maximum birefringence BRmax in an off-axis direction, the following expression (1-1) and expression (2-1) are established: −1.0≦AveBR cos 2θxy

Abstract translation: 本发明提供一种用于光学构件的合成石英玻璃，其不仅控制光轴方向上的快轴方向，并且减少偏轴双折射，而且在光轴上具有双折射的大小 方向被控制为任意值，使得从平行方向到主光轴方向测量的从双折射BR和快轴方向＆yt; xy定义的值BR cos 2＆amp; t s; xy的平均值被定义为 平均双折射度AveBR cos 2＆amp; t s; xy，并且当从垂直方向测量到光学构件的主光轴方向的双折射的最大值被定义为在偏轴方向上的最大双折射率BRmax时，以下表达式（1 -1）和表达式（2-1）：-1.0＆nlE; AveBR cos 2＆thetas; xy <0.0（1-1）0.0＆nlE; BRmax＆nlE; 1.0（2-1）。

公开(公告)号：US20120033924A1

公开(公告)日：2012-02-09

申请号：US13317073

申请日：2011-10-07

Applicant: Lance Gibson ,  David Peckham ,  Robert Lingle, JR.

Inventor： Lance Gibson ,  David Peckham ,  Robert Lingle, JR.

IPC: G02B6/036

CPC classification number: G02B6/03683 ,  C03B37/01211 ,  C03B37/01228 ,  C03B37/014 ,  C03B37/018 ,  C03B2201/04 ,  C03B2201/075 ,  C03B2201/12 ,  C03B2201/31 ,  C03B2203/22

Abstract: The specification describes an improved optical fiber produced by a hybrid VAD/MCVD process. The core of the fiber is produced using VAD and the inner cladding layer has a depressed index and is produced using MCVD. In preferred embodiments, the optical power envelope is essentially entirely contained in VAD produced core material and the MCVD produced depressed index cladding material. Optical loss is minimized by confining most of the optical power to the VAD core where OH presence is low, as well as by maximizing the optical power in the un-doped silica region. The MCVD substrate tube material is essentially devoid of optical power.

公开(公告)号：US08011208B2

公开(公告)日：2011-09-06

申请号：US12072013

申请日：2008-02-22

Applicant: Jitendra Balakrishnan ,  Samir Khanna ,  Chukwuemeka Benneth Onuh ,  Sonya Marie Raney ,  Pushkar Tandon ,  Dana Craig Bookbinder

Inventor： Jitendra Balakrishnan ,  Samir Khanna ,  Chukwuemeka Benneth Onuh ,  Sonya Marie Raney ,  Pushkar Tandon ,  Dana Craig Bookbinder

IPC: C03B37/018

CPC classification number: C03B37/01853 ,  C03B37/0124 ,  C03B37/01453 ,  C03B37/01807 ,  C03B37/027 ,  C03B2201/04 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/50 ,  C03B2203/22 ,  C03B2207/90

Abstract: According to an embodiment of the invention a method of manufacturing optical fiber cane comprises the steps of: (i) providing a core rod manufactured of relatively low viscosity glass; (ii) depositing SiO2 based soot around the core rod to form a soot preform, the soot being of relatively high viscosity material such that the softening point of the low viscosity glass is at least 200° C. lower than the viscosity of the high viscosity outer core region; and (iii) consolidating the soot of the soot preform by exposure to hot zone at temperatures of 1000° C.-1600° C. The soot is consolidated by heating the outer portion of the soot preform at a relatively fast heating rate, the heating rate being sufficient to densify the soot, so as to render the densified material with enough rigidity to confine the heated core rod and to prevent the heated core rod from puddling.

Abstract translation: 根据本发明的实施例，制造光纤手杖的方法包括以下步骤：（i）提供由相对低粘度玻璃制成的芯棒; （ii）在芯棒周围沉积SiO 2烟炱以形成烟炱预制件，该烟炱是相对高粘度的材料，使得低粘度玻璃的软化点比高粘度的粘度低至少200℃ 外核区; 并且（iii）通过在1000℃-1600℃的温度下暴露于热区来固化烟灰预制件的烟灰。通过以相对较快的加热速率加热烟灰预制件的外部部分来固化煤烟，加热 速率足以致密化烟灰，以使致密材料具有足够的刚性以限制加热的芯棒并防止加热的芯棒搅拌。

公开(公告)号：US20110201714A1

公开(公告)日：2011-08-18

申请号：US13123350

申请日：2009-10-01

Applicant: Mohamed Bouazaoui ,  Bruno Capoen ,  Hicham El-Hamzaoui ,  Laurent Bigot ,  Géraud Bouwmans

Inventor： Mohamed Bouazaoui ,  Bruno Capoen ,  Hicham El-Hamzaoui ,  Laurent Bigot ,  Géraud Bouwmans

IPC: C08J9/36 ,  C08G77/04

CPC classification number: C03B19/12 ,  C03B37/016 ,  C03B2201/04 ,  C03B2203/42 ,  C03C1/006 ,  C03C3/06

Abstract: The present invention relates to a process for the synthesis of a silica monolith according to a process known as a “sol-gel process” that comprises the following steps: hydrolysis of a silicon alkoxide in order to form a hydrolysis precursor followed by a condensation of said hydrolysis precursor in the presence of an organic solvent, in the presence of water and of a basic catalyst in order to form oligomeric clusters containing several silicon atoms; dispersion of said oligomeric clusters in a solution in order to form a sol; polymerization of the sol in order to obtain a gel via a first heat treatment, at a temperature below the boiling point of the constituents of the sol; drying of the gel via a second heat treatment including an exposure of the gel to around 90° C. for at least 24 hours followed by an increase in temperature, under vacuum, between around 90° C. and around 180° C., said temperature increase being between 0.1/min and 5° C./min; conversion of the gel to a xerogel via a third heat treatment, said heat treatment including a hold at a drying temperature between 850 and 1000° C. for at least an hour; dehydration and densification of the xerogel until the silica monolith is obtained via a fourth heat treatment, said fourth heat treatment comprising a hold at a temperature above 1100° C. for at least one hour. The present invention also relates to a silica monolith obtained by the process of the invention, having a concentration of —OH groups of less than 1 ppm. The present invention also discloses the use of the monolith of the invention for producing optical fibres.

Abstract translation: 本发明涉及根据已知为“溶胶 - 凝胶法”的方法合成二氧化硅整料的方法，该方法包括以下步骤：水解硅烷醇以形成水解前体，然后冷凝 所述水解前体在有机溶剂的存在下，在水和碱性催化剂的存在下，以形成含有几个硅原子的低聚簇; 将所述低聚簇分散在溶液中以形成溶胶; 在低于溶胶成分的沸点的温度下通过第一热处理获得凝胶的溶胶的聚合; 通过第二热处理干燥凝胶，包括将凝胶暴露于约90℃至少24小时，然后在真空下在约90℃至约180℃之间升高温度，所述 温度升高在0.1 / min〜5℃/ min之间; 通过第三次热处理将凝胶转化为干凝胶，所述热处理包括在850至1000℃之间的干燥温度下保持至少1小时; 干凝胶的脱水和致密化直到通过第四次热处理获得二氧化硅整料，所述第四热处理包括在高于1100℃的温度下保持至少1小时。 本发明还涉及通过本发明的方法得到的二氧化硅石墨，其浓度小于1ppm。 本发明还公开了本发明的整料用于生产光纤的用途。

公开(公告)号：US20100307197A1

公开(公告)日：2010-12-09

申请号：US12801378

申请日：2010-06-04

Applicant: Stefan Ochs ,  Steffen Zwarg ,  Mirko Wittrin ,  Martin Trommer

Inventor： Stefan Ochs ,  Steffen Zwarg ,  Mirko Wittrin ,  Martin Trommer

IPC: C03B37/018

CPC classification number: C03B19/01 ,  C03B19/1453 ,  C03B37/01446 ,  C03B2201/04

Abstract: A known method for producing synthetic quartz glass comprises the method steps: (a) forming a cylindrical SiO2 soot body having an inner portion and at least one free cylinder jacket surface surrounding the inner portion; (b) thermally drying the porous soot body; and (c) vitrifying the dried soot body with formation of the cylinder from synthetic quartz glass. Starting therefrom, to indicate a method which permits a particularly flat radial distribution in the inner portion of the cylinder, it is suggested according to the invention that the dried SiO2 soot body that is present after method step b) should be subjected to a homogenizing method prior to vitrification, the homogenizing method comprising the following steps: (I) heating the soot body to a consolidation temperature to form a sealing layer in the area of the at least one cylinder jacket, the sealing layer sealing the inner portion to the outside; (II) cooling the soot body from the consolidation temperature; and (III) annealing the soot body in the range of a homogenization temperature during a period of at least 5 hours so that the radial profile of the hydroxyl group concentration flattens in the inner portion.

Abstract translation: 用于生产合成石英玻璃的已知方法包括以下方法步骤：（a）形成具有内部部分和围绕内部部分的至少一个自由圆筒形护套表面的圆柱形SiO 2烟灰体; （b）热干燥多孔烟炱体; 和（c）通过合成石英玻璃形成圆筒来使干燥的烟灰体玻璃化。 从此开始，为了表示允许气缸内部特别平坦的径向分布的方法，根据本发明，建议在方法步骤b）之后存在的干燥的SiO 2烟炱体应经受均匀化方法 在玻璃化之前，均化方法包括以下步骤：（I）将烟灰体加热至固化温度，以在至少一个气缸套的区域中形成密封层，密封层将内部部分密封到外部; （II）从固结温度冷却烟灰体; 和（III）在均匀化温度范围内在至少5小时的时间内使烟灰体退火，使得羟基浓度的径向分布在内部变平。

公开(公告)号：US07841211B2

公开(公告)日：2010-11-30

申请号：US10535935

申请日：2003-11-28

Applicant: Tatsuhiro Sato ,  Takahiro Kaitou ,  Akira Fujinoki ,  Toshiyuki Kato ,  Tohru Segawa ,  Nobumasa Yoshida

Inventor： Tatsuhiro Sato ,  Takahiro Kaitou ,  Akira Fujinoki ,  Toshiyuki Kato ,  Tohru Segawa ,  Nobumasa Yoshida

IPC: C03B20/00 ,  C03B19/14

CPC classification number: C03C3/06 ,  C03B19/1453 ,  C03B2201/03 ,  C03B2201/04 ,  C03B2201/07 ,  C03B2201/075 ,  C03B2201/20 ,  C03B2201/24 ,  C03C2201/02 ,  C03C2201/11 ,  C03C2201/23 ,  C03C2201/24 ,  C03C2201/26

Abstract: First of all, there is provided a production process of a synthetic quartz glass which has less impurity, has a high-temperature viscosity characteristic equal to or more than that of a natural quartz glass, and hardly deforms even in a high-temperature environment, and especially a production process of a highly heat resistant synthetic quartz glass which is free from the generation of bubbles and is dense. Secondly, there is provided a highly heat resistant synthetic quartz glass body which is easily obtained by the production process of the present invention, and especially a transparent or black quartz glass body which is free from the generation of bubbles, is dense, has high infrared absorption rate and emission rate, and has an extremely high effect for preventing diffusion of alkali metal. The process is a process of producing a highly heat resistant quartz glass body having an absorption coefficient at 245 nm of 0.05 cm−1 or more, and the silica porous body was subjected to a reduction treatment, followed by baking, thereby forming a dense glass body.

Abstract translation: 首先，提供了杂质少，具有等于或高于天然石英玻璃的高温粘度特性的合成石英玻璃的制造方法，即使在高温环境下也几乎不变形， 特别是高度耐热的合成石英玻璃的生产过程，其不产生气泡并且致密。 其次，提供了通过本发明的制造方法容易获得的高耐热性合成石英玻璃体，特别是不产生气泡的透明或黑色石英玻璃体，具有高红外 吸收率和排放率，对防止碱金属的扩散具有极高的效果。 该方法是制造吸收系数在245nm为0.05cm -1以上的高耐热性石英玻璃体的工序，对二氧化硅多孔体进行还原处理，然后进行烧成，由此形成致密的玻璃 身体。

公开(公告)号：US20100287993A1

公开(公告)日：2010-11-18

申请号：US12799561

申请日：2010-04-27

Applicant: Robert M. Atkins ,  James W. Fleming ,  Paul F. Glodis ,  Man F. Yan

Inventor： Robert M. Atkins ,  James W. Fleming ,  Paul F. Glodis ,  Man F. Yan

IPC: C03B37/018

CPC classification number: C03B37/01869 ,  C03B37/01211 ,  C03B37/01248 ,  C03B37/01861 ,  C03B2201/04 ,  C03B2203/22

Abstract: The specification describes methods for the manufacture of very large optical fiber preforms wherein the core material is produced by MCVD. Previous limitations on preform size inherent in having the MCVD starting tube as part of the preform process are eliminated by removing the MCVD starting tube material from the collapsed MCVD rod by etching or mechanical grinding. Doped overcladding tubes are used to provide the outer segments of the refractive index profile thus making most effective use of the MCVD produced glass and allowing the production of significantly larger MCVD preforms than previously possible.

Abstract translation: 该说明书描述了用于制造非常大的光纤预制件的方法，其中芯材料通过MCVD制造。 通过蚀刻或机械研磨，通过从收缩的MCVD棒中除去MCVD起始管材料，从而消除了将MCVD起始管作为预制件工艺的一部分而固有的预制件尺寸的限制。 掺杂的外包管用于提供折射率分布的外部部分，从而最有效地利用MCVD生产的玻璃，并允许生产比之前可能的显着更大的MCVD预成型件。