公开(公告)号：US08385701B2

公开(公告)日：2013-02-26

申请号：US12773358

申请日：2010-05-04

申请人： Dana Craig Bookbinder ,  Ming-Jun Li ,  Pushkar Tandon

发明人： Dana Craig Bookbinder ,  Ming-Jun Li ,  Pushkar Tandon

IPC分类号： G02B6/02

CPC分类号： G02B6/0365 ,  G02B6/03683

摘要： An optical fiber includes a central glass core region comprising maximum refractive index delta percent Δ1, a first inner annular region surrounding said core comprising refractive index delta percent Δ2, a depressed annular region surrounding said inner annular region and comprising Δ3 and a third annular region surrounding the depressed annular region comprising refractive index delta percent Δ4; wherein Δ1MAX>Δ4>Δ2>Δ3. The difference between Δ4 and Δ2 is greater than 0.01 and profile volume, |V3| is at least 60% Δμm2.

摘要翻译： 光纤包括包含最大折射率Δ百分比Dgr的中心玻璃芯区域; 1，围绕所述芯的第一内环形区域，包括折射率Δ百分比Dgr; 2，包围所述内环形区域的凹陷环形区域， 围绕所述凹陷的环形区域的第三环形区域包括折射率Δ百分比Dgr; 4; 其中＆Dgr; 1MAX>＆Dgr; 4>＆Dgr; 2＆Dgr; 3。 ＆Dgr; 4和＆Dgr; 2之间的区别大于0.01和配置文件卷| V3 | 至少60％＆Dgr;μm2。

公开(公告)号：US20120230638A1

公开(公告)日：2012-09-13

申请号：US13371857

申请日：2012-02-13

申请人： Scott Robertson Bickham ,  Dana Craig Bookbinder ,  Ming-Jun Li ,  Gaozhu Peng ,  Peter Joseph Ronco ,  Pushkar Tandon

发明人： Scott Robertson Bickham ,  Dana Craig Bookbinder ,  Ming-Jun Li ,  Gaozhu Peng ,  Peter Joseph Ronco ,  Pushkar Tandon

IPC分类号： G02B6/028

CPC分类号： G02B6/03672 ,  G02B6/0288 ,  G02B6/0365

摘要： Bend resistant multimode optical fibers are disclosed herein. Multimode optical fibers disclosed herein comprise a core region and a cladding region surrounding and directly adjacent to the core region, the cladding region comprising a first region having index delta percent Δ2, a depressed-index annular portion having Δ3, and a third annular region surrounding the depressed annular region comprising refractive index delta percent Δ4; wherein Δ1MAX>Δ4>Δ2>Δ3, wherein the difference between Δ4 and Δ2 is greater than or equal to 0.03%.

摘要翻译： 本文公开了抗弯曲多模光纤。 本文公开的多模光纤包括围绕并直接邻近芯区的芯区和包层区，所述包层区包括具有折射率Δ百分比Dgr的第一区域;具有＆Dgr; 3的凹陷折射率环形部分，以及 围绕包含折射率三角洲百分比Dgr; 4的凹陷环形区域的第三环形区域; 其中＆Dgr; 1＆gt;＆Dgr; 4＆gt;＆Dgr; 2＆gt;＆Dgr; 3，其中Dgr 4与Dgr 2之间的差值大于或等于0.03％。

公开(公告)号：US08137469B2

公开(公告)日：2012-03-20

申请号：US11305857

申请日：2005-12-14

申请人： Daniel Warren Hawtof ,  Michael T Kelley ,  John Stephen Rosettie ,  Andrew Paul Schermerhorn ,  Kashyap H Shah ,  John Stone, III ,  Pushkar Tandon

发明人： Daniel Warren Hawtof ,  Michael T Kelley ,  John Stephen Rosettie ,  Andrew Paul Schermerhorn ,  Kashyap H Shah ,  John Stone, III ,  Pushkar Tandon

IPC分类号： C03B37/018

CPC分类号： C03B19/1423 ,  C03B19/1453 ,  C03B19/1476 ,  C03B2207/66 ,  C03C3/06 ,  C03C2201/23 ,  C03C2201/42

摘要： Disclosed are process and apparatus for making high purity fused silica glass materials. The process involves depositing soot particles onto an essentially planar deposition supporting surface and modulation of motion of the soot-generating device relative to the deposition supporting surface to result in a low local soot density variation. The apparatus is designed to implement the planar deposition process. The invention makes it possible to produce fused silica glass without the use of potentially contaminating refractory bricks.

摘要翻译： 公开了制备高纯度熔融石英玻璃材料的方法和设备。 该方法包括将烟灰颗粒沉积到基本平坦的沉积支撑表面上，并且调节烟灰产生装置相对于沉积支撑表面的运动以导致低的局部烟灰密度变化。 该设备被设计成实现平面沉积过程。 本发明使得可以生产熔融石英玻璃而不使用潜在的污染耐火砖。

公开(公告)号：US20120047959A1

公开(公告)日：2012-03-01

申请号：US13217696

申请日：2011-08-25

申请人： Martin Wade Allen ,  Steven Bruce Dawes ,  Robert Brett Desorcie ,  Nicolas LeBlond ,  Roger A. Rose ,  Pushkar Tandon ,  Kochuparambil Vargheese ,  Li Yang

发明人： Martin Wade Allen ,  Steven Bruce Dawes ,  Robert Brett Desorcie ,  Nicolas LeBlond ,  Roger A. Rose ,  Pushkar Tandon ,  Kochuparambil Vargheese ,  Li Yang

IPC分类号： C03B37/018

CPC分类号： C03B37/01282

摘要： A method and apparatus for making an optical fiber preform. The apparatus has an outer wall and an inner wall. The outer wall surrounds the inner wall and the inner wall surrounds an inner cavity of the apparatus. A core rod is deposited in the inner cavity after which particulate glass material, such as glass soot, is deposited in the inner cavity around the core rod. The core rod has at least 10 percent of the final cladding soot already applied thereto. A radially inward pressure is applied against the particulate glass material to pressurize the particulate glass material against the core rod.

摘要翻译： 一种用于制造光纤预制棒的方法和装置。 该装置具有外壁和内壁。 外壁围绕内壁并且内壁围绕设备的内腔。 芯棒沉积在内腔中，之后将颗粒状玻璃材料（例如玻璃烟灰）沉积在芯棒周围的内腔中。 芯棒具有已经施加到其上的最终包层烟灰的至少10％。 向颗粒状玻璃材料施加径向向内的压力以将颗粒状玻璃材料压靠在芯棒上。

公开(公告)号：US20110318555A1

公开(公告)日：2011-12-29

申请号：US13170675

申请日：2011-06-28

申请人： Dana Craig Bookbinder ,  Keith Leonard House ,  Pushkar Tandon

发明人： Dana Craig Bookbinder ,  Keith Leonard House ,  Pushkar Tandon

IPC分类号： B32B17/00 ,  B32B7/02

CPC分类号： C03B17/02 ,  C03B17/064 ,  C03B17/068 ,  C03C3/083 ,  C03C3/085 ,  C03C3/087 ,  C03C3/091 ,  C03C3/093 ,  Y10T428/2495

摘要： Transparent glass sheets having increased mechanical strength include an inner layer surrounded by surface compressive layers wherein the difference of the coefficient of thermal expansion of the inner layer and the surface compressive layer is greater than 50×10−7° C.−1 and wherein the surface compressive layer has a compressive stress of at least about 300 MPa.

摘要翻译： 具有增加的机械强度的透明玻璃板包括被表面压缩层包围的内层，其中内层和表面压缩层的热膨胀系数的差异大于50×10 -7℃-1，并且其中 表面压缩层具有至少约300MPa的压缩应力。

公开(公告)号：US08069658B2

公开(公告)日：2011-12-06

申请号：US12324090

申请日：2008-11-26

申请人： Suhao He ,  Achim Karl-Erich Heibel ,  Pushkar Tandon

发明人： Suhao He ,  Achim Karl-Erich Heibel ,  Pushkar Tandon

IPC分类号： F01N3/00

CPC分类号： F01N9/002 ,  F01N2900/0601 ,  F01N2900/1606 ,  F01N2900/1611 ,  Y02T10/47

摘要： A method for regenerating a particulate filter may comprise calculating a first estimated soot load of a particulate filter based on a pressure drop of an exhaust gas flowing through the particulate filter, and calculating a second estimated soot load of the particulate filter based on a mass balance of soot in the particulate filter. The method may further comprise calculating a hybrid estimated soot load based on the first estimated soot load and the second estimated soot load, wherein calculating the hybrid estimated soot load comprises applying at least one gate so as to weight a relative contribution of each of the first estimated soot load and the second estimated soot load to the hybrid estimated soot load, and causing regeneration of the particulate filter when the hybrid estimated soot load is greater than or equal to a threshold value.

摘要翻译： 用于再生微粒过滤器的方法可以包括基于流过颗粒过滤器的排气的压降来计算颗粒过滤器的第一估计烟灰负荷，以及基于质量平衡计算颗粒过滤器的第二估计烟炱负荷 的微粒过滤器中的烟灰。 该方法还可以包括基于第一估计烟灰负荷和第二估算烟灰负荷来计算混合估计烟灰负荷，其中计算混合估算烟灰负荷包括施加至少一个门，以便对第一 估算的烟灰负荷和第二估算烟灰负荷的混合估算烟灰负荷，并且当混合估算烟炱负荷大于或等于阈值时，引起微粒过滤器的再生。

公开(公告)号：US08011208B2

公开(公告)日：2011-09-06

申请号：US12072013

申请日：2008-02-22

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

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

IPC分类号： C03B37/018

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

摘要： 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.

摘要翻译： 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：US20110211797A1

公开(公告)日：2011-09-01

申请号：US13034126

申请日：2011-02-24

申请人： Kevin Wallace Bennett ,  Andrey V. Filippov ,  Peter Joseph Ronco ,  Roger A. Rose ,  Pushkar Tandon

发明人： Kevin Wallace Bennett ,  Andrey V. Filippov ,  Peter Joseph Ronco ,  Roger A. Rose ,  Pushkar Tandon

IPC分类号： G02B6/036

CPC分类号： C03B37/027 ,  C03B2201/12 ,  C03B2201/31 ,  C03B2201/42 ,  C03B2203/222 ,  C03B2205/40 ,  G02B6/03622 ,  G02B6/03627 ,  G02B6/03633 ,  G02B6/03694

摘要： An optical fiber having increased mechanical strength is provided. The optical fiber includes an over cladding layer that has a compressive stress of at least 100 MPa.

摘要翻译： 提供了具有增加的机械强度的光纤。 光纤包括具有至少100MPa的压缩应力的上敷层。

公开(公告)号：US20110211796A1

公开(公告)日：2011-09-01

申请号：US13030308

申请日：2011-02-18

申请人： Dana Craig Bookbinder ,  Ming-Jun Li ,  Pushkar Tandon

发明人： Dana Craig Bookbinder ,  Ming-Jun Li ,  Pushkar Tandon

IPC分类号： G02B6/036

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微米且折射率＆Dgr2的第一内包层区域和围绕具有折射率＆Dgr; 3的内包层区域的第二外包层区域，其中＆Dgr | 1＆Dgr; 3＆Dgr ; 2。 Dgr 3和Dgr之间的差异大于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。

公开(公告)号：US20110129191A1

公开(公告)日：2011-06-02

申请号：US12872051

申请日：2010-08-31

申请人： Scott Robertson Bickham ,  Dana Craig Bookbinder ,  Ming-Jun Li ,  Snigdharaj Kumar Mishra ,  Daniel Aloysius Nolan ,  Pushkar Tandon

发明人： Scott Robertson Bickham ,  Dana Craig Bookbinder ,  Ming-Jun Li ,  Snigdharaj Kumar Mishra ,  Daniel Aloysius Nolan ,  Pushkar Tandon

IPC分类号： G02B6/036

CPC分类号： G02B6/02019 ,  G02B6/02242 ,  G02B6/02266 ,  G02B6/02357 ,  G02B6/02366 ,  G02B6/0365

摘要： An optical fiber with a glass core extending from a centerline to a radius R1 wherein R1 is greater than about 5 μm; a glass cladding surrounding and in contact with the core. The cladding has a depressed annular region, the inner radius of said depressed annular region is spaced from said core a distance greater than 1 μm and less or equal to than 5 μm. The core and the cladding provide a fiber with cable cutoff less than 1550 nm, and an effective area at 1550 nm greater than 120 μm2 and bend loss of ≦0.7 dB/turn on a 20 mm diameter mandrel.

摘要翻译： 具有从中心线延伸到半径R1的玻璃芯的光纤，其中R1大于约5μm; 围绕并与芯接触的玻璃包层。 包层具有凹陷的环形区域，所述凹陷的环形区域的内半径与所述芯部间隔大于1μm且小于或等于5μm。 芯和包层提供了一种光缆，其电缆截止值小于1550nm，在1550nm处的有效面积大于120μm2，并且在20mm直径的心轴上具有0.7dB /的弯曲损耗。