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    Bend resistant multimode optical fiber
    61.
    发明授权
    Bend resistant multimode optical fiber 有权
    耐弯曲多模光纤

    公开(公告)号：US08385702B2

    公开(公告)日：2013-02-26

    申请号：US12770250

    申请日：2010-04-29

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

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

    IPC分类号： G02B6/032

    CPC分类号： G02B6/0288 ,  G02B6/03627

    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 depressed-index annular region, wherein the inner boundary of said depressed index region is an extension of the graded index core, the depressed region having a moat volume greater than 105%-um2.

    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域的芯区域和包层区域，所述包层区域包括凹陷折射率环形区域，其中所述凹陷折射率区域的内边界是渐变折射率核心的延伸 ，凹陷区域具有大于105％的槽口体积--2。

    Large effective area fiber with Ge-free core
    62.
    发明授权
    Large effective area fiber with Ge-free core 有权

    公开(公告)号：US08315495B2

    公开(公告)日：2012-11-20

    申请号：US12696189

    申请日：2010-01-29

    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： C03C13/046 ,  G02B6/02019 ,  G02B6/02395 ,  G02B6/0281 ,  G02B6/0283 ,  G02B6/03627 ,  G02B6/0365

    摘要： According to some embodiments an optical waveguide fiber comprises: (i) a Ge free core having an effective area of 90 μm2 to 160 μm2, at a 1550 nm wavelength, and α value 12≦α≦25, said core comprising: (a) a central core region extending radially outwardly from a centerline to a radius 0 μm≦r0≦2 μm, and having a relative refractive index percent profile Δ0(r) in % measured relative to pure silica, wherein −0.1%≦Δ0(r)≦0.1%, wherein the central core region has a maximum relative refractive index percent, Δ0MAX; (b) a first annular core region surrounding and directly adjacent to the central core region and extending to an outer radius r1, wherein 4.8 μm≦r1≦10 μm, and having a relative refractive index percent profile, Δ1(r) in % measured relative to pure silica, and a minimum relative refractive index, Δ2MIN, and the relative refractive index measured at a radius r=2.5 μm being: −0.15≦Δ1(r=2.5 μm)≦0, and Δ0MAX≧Δ1(r=2.5 μm); (c) a fluorine doped second annular region surrounding and directly adjacent to the first annular core region and extending to a radius 13 μm≦r2≦30 μm and having a negative relative refractive index percent profile, Δ2(r) in %, measured relative to pure silica, with a minimum relative refractive index percent Δ2MIN being: Δ2MIN≦Δ1(r=2.5 μm), and −0.7%≦Δ2MIN≦−0.28%; (ii) a cladding surrounding the core and having a relative refractive index percent Δc(r) in % measured relative to pure silica, and Δc(r)=Δ2MIN±0.3%; wherein the relative refractive index profile of the optical fiber is selected to provide attenuation of no more than 0.175 dB/km at the wavelength of 1550 nm.

    Systems And Methods For Determining A Particulate Load In A Particulate Filter
    65.
    发明申请
    Systems And Methods For Determining A Particulate Load In A Particulate Filter 有权
    用于确定颗粒过滤器中颗粒载荷的系统和方法

    公开(公告)号：US20110209460A1

    公开(公告)日：2011-09-01

    申请号：US12714041

    申请日：2010-02-26

    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： F01N11/00 ,  F01N3/023 ,  B01D46/46

    CPC分类号： F01N9/002 ,  F01N3/023 ,  F01N2900/0601 ,  F01N2900/1606 ,  Y02T10/47

    摘要： A method for regenerating a particulate filter may comprise calculating a soot layer state correction factor based on a rate of regeneration and a rate of particulate loading in the particulate filter and calculating an estimated soot load in the particulate filter based on a pressure drop of an exhaust gas flowing through the particulate filter and the calculated soot layer state correction factor. The method for regenerating the particulate filter may further comprise causing regeneration of the particulate filter when the estimated soot load is greater than or equal to a threshold value.

    摘要翻译： 用于再生颗粒过滤器的方法可以包括基于再生速率和颗粒过滤器中的颗粒负载速率来计算煤烟层状态校正因子，并基于排气压降计算颗粒过滤器中的估计的烟灰负荷 流过微粒过滤器的气体和计算出的煤烟层状态校正因子。 用于再生颗粒过滤器的方法还可以包括当估计的烟炱负荷大于或等于阈值时引起颗粒过滤器的再生。

    Low Bend Loss Optical Fiber
    67.
    发明申请
    Low Bend Loss Optical Fiber 有权
    低弯损耗光纤

    公开(公告)号：US20110064368A1

    公开(公告)日：2011-03-17

    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。

    Methods for making optical fiber preforms and microstructured optical fibers
    68.
    发明申请
    Methods for making optical fiber preforms and microstructured optical fibers 有权
    制造光纤预制棒和微结构光纤的方法

    公开(公告)号：US20090126407A1

    公开(公告)日：2009-05-21

    申请号：US11985992

    申请日：2007-11-19

    申请人： Dana Craig Bookbinder ,  Robert Brett Desorcie ,  Pushkar Tandon

    发明人： Dana Craig Bookbinder ,  Robert Brett Desorcie ,  Pushkar Tandon

    IPC分类号： C03B37/018

    CPC分类号： C03B37/0183 ,  C03B37/01861 ,  C03B37/02781 ,  C03B2201/12 ,  C03B2201/31 ,  C03B2203/14 ,  C03B2203/42 ,  C03B2207/70

    摘要： A method of making an optical fiber preform includes depositing silica glass on the inside of a tube substrate via a plasma chemical vapor deposition (PCVD) operation. The parameters of the PCVD operation are controlled such that the silica glass deposited on the interior of the tube substrate contains a non-periodic array of voids in a cladding region of the optical fiber preform. The optical fiber preform may be used to produce an optical fiber having a core and a void containing cladding. The core of the optical fiber has a first index of refraction and the cladding has a second index of refraction less than that of the core.

    摘要翻译： 制造光纤预制件的方法包括通过等离子体化学气相沉积（PCVD）操作在管基板的内部沉积二氧化硅玻璃。 控制PCVD操作的参数，使得沉积在管基板内部的石英玻璃在光纤预制件的包层区域中包含非周期性的空隙阵列。 光纤预制件可用于制造具有芯和包含空隙的空隙的光纤。 光纤的核心具有第一折射率，并且包层具有小于芯的折射率的第二折射率。