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公开(公告)号：US08849082B2
公开(公告)日：2014-09-30
申请号：US13677379
申请日：2012-11-15
CPC分类号： G02B6/028 , G02B6/02395 , G02B6/0281 , G02B6/0365 , G02B6/03666
摘要： An optical fiber comprising: (I) a germania doped central core region having outer radius r1 and (II) a maximum relative refractive index Δ1max and a cladding region including (i) a first inner cladding region having an outer radius r2>5 microns and refractive index Δ2; (ii) a and a second inner cladding region having an outer radius r3>9 microns and comprising refractive index Δ3; and (iii) an outer cladding region surrounding the inner cladding region and comprising refractive index Δ4, wherein Δ1max>Δ4, Δ2>Δ3, and wherein 0.01%≦Δ4−Δ3≦0.09%, said fiber exhibits a 22 m cable cutoff less than or equal to 1260 nm, and 0.25≦r1/r2≦0.85.
摘要翻译： 一种光纤，包括：（I）具有外半径r1和（II）最大相对折射率＆Dgr; 1max的包含掺锗的中心核心区域和包括（i）具有外半径r2> 5的第一内包层区域的包层区域 微米和折射率＆Dgr; 2; （ii）具有外径r3> 9微米并且包括折射率＆Dgr; 3的a和第二内包层区域; 4，Dgr; 1＆gt;＆Dgr; 4，＆Dgr; 2＆gt;＆Dgr; 3，其中0.01％＆amp; Dgr; 4＆Dgr; 4和Dgr; 4，其中所述外包层区包围折射率＆ 3＆nlE; 0.09％，所述纤维表现出小于或等于1260nm的22m电缆截断，和0.25＆lt; ll; r1 / r2＆nlE; 0.85。
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22.发明授权公开(公告)号：US08840858B2
公开(公告)日：2014-09-23
申请号：US13176804
申请日：2011-07-06
申请人： Lewis A Bernstein , Dana Craig Bookbinder , Jason A Dillard , Jennifer L Porter , Balram Suman , Pushkar Tandon
发明人： Lewis A Bernstein , Dana Craig Bookbinder , Jason A Dillard , Jennifer L Porter , Balram Suman , Pushkar Tandon
IPC分类号： C01B33/12 , C03B37/014
CPC分类号： C01B33/183 , B01J12/00 , C03B37/01413 , C03B2207/42 , C03B2207/46
摘要： An apparatus for mixing a vaporized precursor with a gas for producing silica particles is provided. The apparatus includes a mixer housing, a precursor delivery chamber having an output in communication with the mixer housing for delivering a vaporized precursor in the mixer housing, and an oxidizing gas delivery chamber having an output in communication with the mixer housing for delivering an oxidizing gas to be mixed with the vaporized precursor. The apparatus further includes a flashback member disposed within the mixer housing and between the output of the precursor delivery chamber and the output of the oxidizing gas delivery chamber. The flashback member is located at a minimum distance from the output of the oxidizing gas delivery chamber defined by Lminimum (cm)=0.453 U (Re)−0.5567, wherein U is the flow rate in cm/sec of precursor and Re is the flow Reynolds number. The flashback member may include a tapered surface on at least one side to reduce recirculation of vaporized gas.
摘要翻译： 提供了一种用于混合蒸发的前体与用于生产二氧化硅颗粒的气体的装置。 该装置包括混合器壳体，前体输送室，其具有与混合器壳体连通的输出，用于将混合器壳体内的蒸发前体输送;以及氧化气体输送室，具有与混合器壳体连通的输出，用于输送氧化气体 与蒸发的前体混合。 该装置还包括设置在混合器壳体内并且在前体输送室的输出和氧化气体输送室的输出之间的回火构件。 回闪构件位于距离最小（cm）= 0.453U（Re）-0.5567所限定的氧化气体输送室的输出的最小距离处，其中U是前体的流速（cm / sec），Re是流量 雷诺数。 闪回构件可以在至少一侧上包括锥形表面以减少气化气体的再循环。
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公开(公告)号：US08673064B2
公开(公告)日：2014-03-18
申请号：US12994565
申请日：2009-05-15
CPC分类号： B01D46/2455 , B01D46/2425 , B01D46/2429 , B01D46/2451 , B01D46/2459 , B01D46/2466 , B01D46/247 , B01D46/2474 , B01D2046/2433 , B01D2046/2437 , B01D2046/2492 , B01D2046/2496 , B01D2279/30 , F01N3/021 , F01N3/2828 , F01N13/009 , F02B37/00 , Y02T10/144 , Y02T10/20
摘要： A partial wall-flow filter having some unplugged flow-through channels and some plugged channels. Desirable combinations of filtration efficiency and back pressure may be provided by combinations of t wall≦305 urn, MPD≦20 μm, % P≧50%, and CD≧250 cpsi wherein t wall is the transverse thickness of the porous walls, MPD is a mean pore diameter of the porous walls, % P is the total porosity of the porous walls, and CD is the cell density of the channels. In one embodiment, some of the plugged channels are located adjacent to the inlet end and some are located adjacent to the outlet end. Systems and method including the partial wall-flow filter are also described.
摘要翻译： 部分壁流过滤器具有一些未堵塞的流通通道和一些堵塞通道。 过滤效率和背压的理想组合可以通过t壁@305μm，MPD @20μm，％P> = 50％和CD> = 250cpsi的组合来提供，其中t壁是多孔壁的横向厚度， MPD是多孔壁的平均孔径，％P是多孔壁的总孔隙率，CD是通道的孔密度。 在一个实施例中，一些堵塞的通道位于入口端附近并且一些位于邻近出口端。 还描述了包括部分壁流式过滤器的系统和方法。
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公开(公告)号：US08588569B2
公开(公告)日：2013-11-19
申请号：US13485028
申请日：2012-05-31
IPC分类号： G02B6/028
CPC分类号： G02B6/028 , G02B6/0286 , G02B6/03627 , G02B6/03638 , G02B6/0365
摘要： One embodiment of a single mode optical fiber includes: a graded index central core region having outer radius r1 and refractive index Δ1; a cladding region comprising (i) a first inner cladding region having an outer radius r2 10 microns and comprising a minimum refractive index Δ3, wherein said second cladding region has at least one region with a refractive index delta that becomes more negative with increasing radius; and (iii) an outer cladding region surrounding the inner cladding region and comprising refractive index Δ4, wherein Δ1>Δ2>Δ3, Δ3
摘要翻译： 单模光纤的一个实施例包括：具有外半径r1和折射率Delta1的渐变折射率中心纤芯区域; 包层区域，包括（i）具有外半径r2 <10微米和折射率Delta2和0.65 @ r1 / r2 @ 1的第一内包层区域; （ii）和具有外半径r3> 10微米并且包括最小折射率Delta3的第二内包层区域，其中所述第二包层区域具有至少一个具有随着半径增加而变得更负的折射率δ的区域; 和（iii）围绕内包层区域并包括折射率Delta4的外包层区域，其中Delta1> Delta2> Delta3，Delta3Δ4。
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公开(公告)号：US08542969B2
公开(公告)日：2013-09-24
申请号：US13030308
申请日：2011-02-18
IPC分类号： G02B6/02
CPC分类号： G02B6/03627 , G02B6/02014 , G02B6/02242 , G02B6/02266
摘要： An optical fiber having both low macrobend loss and low microbend loss. The fiber has a first inner cladding region having an outer radius r2>8 microns and refractive index Δ2 and a second outer cladding region surrounding the inner cladding region having refractive index Δ3, wherein Δ1>Δ3>Δ2. The difference between Δ3 and Δ2 is greater than 0.01. The fiber exhibits a 22 m cable cutoff less than or equal to 1260 nm, and r1/r2 is greater or equal to 0.25.
摘要翻译： 具有低弯曲损耗和低微弯损耗的光纤。 纤维具有外半径r2> 8微米和折射率Delta2的第一内包层区域和围绕具有折射率Delta3的内包层区域的第二外包层区域，其中Delta1> Delta3>Δ2。 Delta3和Delta2之间的差值大于0.01。 纤维表现出小于或等于1260nm的22m电缆断线，r1 / r2大于或等于0.25。
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公开(公告)号：US08512433B2
公开(公告)日：2013-08-20
申请号：US12990065
申请日：2009-05-29
CPC分类号： B01D46/2474 , B01D46/2425 , B01D46/2429 , B01D46/2466 , B01D2046/2433 , B01D2046/2437 , B01D2046/2496 , C04B35/195 , C04B38/0009 , C04B2111/00793 , C04B2235/3217 , C04B2235/3225 , C04B2235/3418 , C04B2235/3445 , C04B2235/349 , C04B2235/5472 , C04B2235/77 , F01N3/0222 , F01N3/035 , F01N13/0093 , F01N2340/04 , F01N2340/06 , C04B38/0054 , C04B38/0064 , C04B38/0074
摘要： Disclosed are ceramic honeycomb articles which possess a unique microstructure characterized by porosity between 40% and 70%, and the presence of coarse pores exhibiting a depth equivalent to the thickness of the cell wall and a dimensional width, in the plane of the cell wall, exhibiting a diameter that is at least as large as the thickness of the cell wall. The articles exhibits reduced filtration efficiency coupled with low pressure drop across the filter, and a reduced regeneration need. Such ceramic articles are particularly well suited for filtration applications, such as off-road and retro-fit diesel exhaust filters or DPFs. Also disclosed is a method for manufacturing the ceramic article wherein the pore former is capable of forming coarse pores.
摘要翻译： 公开了具有特征在于孔隙率在40％至70％之间的独特微结构的陶瓷蜂窝体制品，并且在细胞壁的平面中存在显示出相当于细胞壁厚度和尺寸宽度的深度的粗糙孔， 具有至少与细胞壁的厚度一样大的直径。 这些制品显示出降低的过滤效率以及过滤器上的低压降，并且减少了再生需求。 这样的陶瓷制品特别适用于过滤应用，例如越野和改装的柴油机排气过滤器或DPF。 还公开了一种用于制造陶瓷制品的方法，其中成孔剂能够形成粗孔。
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公开(公告)号：US20130044987A1
公开(公告)日：2013-02-21
申请号：US13588423
申请日：2012-08-17
申请人： Scott Robertson Bickham , Dana Craig Bookbinder , Jeffrey Coon , Ming-Jun Li , Snigdharaj Kumar Mishra , Pushkar Tandon , James Andrew West
发明人： Scott Robertson Bickham , Dana Craig Bookbinder , Jeffrey Coon , Ming-Jun Li , Snigdharaj Kumar Mishra , Pushkar Tandon , James Andrew West
IPC分类号： G02B6/02
CPC分类号： G02B6/0281 , G02B6/02014 , G02B6/02242 , G02B6/02266 , G02B6/02395 , G02B6/03627 , G02B6/0365
摘要： An optical fiber having both low macrobend loss and low microbend loss. The fiber has a first inner cladding region having an outer radius r2>8 microns and refractive index Δ2 and a second outer cladding region surrounding the inner cladding region having refractive index Δ4, wherein Δ1>Δ4>Δ2. The difference between Δ4 and Δ2 is greater than 0.002 percent. The fiber exhibits a 22 m cable cutoff less than or equal to 1260 nm, and r1/r2 is greater or equal to 0.25.
摘要翻译： 具有低弯曲损耗和低微弯损耗的光纤。 光纤具有外半径r2> 8微米且折射率＆lt; Dgr2的第一内包层区域和围绕折射率＆Dgr; 4的内包层区域的第二外包层区域，其中＆Dgr | 1＆Dgr; 4＆Dgr ; 2。 Dgr 4和Dgr 2之间的差异大于0.002％。 纤维表现出小于或等于1260nm的22m电缆断线，r1 / r2大于或等于0.25。
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公开(公告)号：US20130029038A1
公开(公告)日：2013-01-31
申请号：US13331610
申请日：2011-12-20
申请人： Scott Robertson Bickham , Oleksandr Kogan , Ming-Jun Li , Snigdharaj Kumar Mishra , Pushkar Tandon
发明人： Scott Robertson Bickham , Oleksandr Kogan , Ming-Jun Li , Snigdharaj Kumar Mishra , Pushkar Tandon
IPC分类号： G02B6/02
CPC分类号： C03B37/01413 , C03B37/0253 , C03B2201/12 , C03B2201/28 , C03B2201/31 , C03B2201/32 , C03B2203/23 , C03B2203/26 , C03B2205/40 , G02B6/0288 , Y02P40/57
摘要： A method of making a multimode optical fiber is disclosed. In one embodiment the method includes calculating a core radius that maximizes the bandwidth of the multimode optical fiber wherein the effect of draw tension is accounted for. The embodiments herein illustrate how core radius can be tuned so the time delay of the outermost guided mode group is reduced. The resultant core radius may be targeted for a value off-nominal from what would be expected for a particular commercial optical fiber type.
摘要翻译： 公开了制造多模光纤的方法。 在一个实施例中，该方法包括计算最大化多模光纤的带宽的纤芯半径，其中考虑拉伸张力的影响。 这里的实施例示出了如何调整芯部半径，使得最外面的导向模式组的时间延迟减小。 所得到的芯部半径可以是针对特定商业光纤类型的预期值的标称值。
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29.发明申请公开(公告)号：US20120202674A1
公开(公告)日：2012-08-09
申请号：US13206004
申请日：2011-08-09
申请人： Nicolas LeBlond , Pushkar Tandon , Srinivas Vemury
发明人： Nicolas LeBlond , Pushkar Tandon , Srinivas Vemury
IPC分类号： C03C6/04
CPC分类号： C03B19/1453 , C03B37/01282 , C03B37/01446
摘要： One embodiment of the disclosure relates to a method of cleaning silica-based soot or an article made of silica-based soot, the method comprising the step of treating silica-based soot or the article made of silica-based soot with at least one of the following compounds: (i) a mixture of CO and Cl2 in a carrier gas such that the total concentration of CO and Cl2 in the mixture is greater than 10% (by volume, in carrier gas) and the ratio of CO:Cl2 is between 0.25 and 5; (ii) CCl4 in a carrier gas, such that concentration CCl4 is greater than 1% (by volume, in carrier gas). Preferably, the treatment by CCl4 is performed at temperatures between 600° C., and 850° C. Preferably, the treatment with the CO and Cl mixture is performed at temperatures between 900° C. and 1200° C. The carrier gas may be, for example, He, Ar, N2, or the combination thereof.
摘要翻译： 本公开的一个实施方案涉及一种清洁二氧化硅基烟灰或由二氧化硅基烟灰制成的制品的方法，所述方法包括以下步骤：用二氧化硅基烟灰或由二氧化硅基烟灰制成的制品用至少一种 以下化合物：（i）载气中CO和Cl 2的混合物，使得混合物中CO和Cl2的总浓度大于载体气体中的10体积％（体积），CO：Cl 2的比例为 介于0.25和5之间; （ii）载气中的CCl 4，使得浓度CCl4大于1％（以体积计，在载气中）。 优选地，通过CCl 4的处理在600℃和850℃之间的温度下进行。优选地，用CO和Cl混合物的处理在900℃和1200℃之间的温度下进行。载气可以是 ，例如He，Ar，N2，或其组合。
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公开(公告)号：US08231701B2
公开(公告)日：2012-07-31
申请号：US12356965
申请日：2009-01-21
IPC分类号： B01D39/06
CPC分类号： F01N3/0222 , B01D46/2429 , B01D46/2455 , B01D46/2466 , B01D46/247 , B01D46/2474 , B01D2046/2433 , B01D2046/2437 , B01D2046/2496 , F01N2330/06 , F01N2330/48 , Y02T10/20 , Y10S55/30
摘要： A particulate filter may comprise an inlet end, an outlet end, and a plurality of channels disposed and configured to flow fluid from the inlet end to the outlet end, wherein the channels are defined by porous walls configured to trap particulate matter. The porous walls may have a cell density less than about 200 cpsi, a wall thickness of less than about 14 mils, a median pore size that ranges from about 13 micrometers to about 20 micrometers, a total porosity greater than about 45%, and a pore size distribution such that pores less than 10 micrometers contribute less than about 10% porosity.
摘要翻译： 微粒过滤器可以包括入口端，出口端和多个通道，其布置和构造成将流体从入口端流出到出口端，其中通道由构造成捕集颗粒物质的多孔壁限定。 多孔壁可以具有小于约200cpsi的孔密度，小于约14密耳的壁厚，中值孔径范围为约13微米至约20微米，总孔隙率大于约45％，和 孔径分布使得小于10微米的孔贡献小于约10％的孔隙率。
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