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    LARGE EFFECTIVE AREA OPTICAL FIBER WITH LOW BEND LOSS
    3.
    发明申请
    LARGE EFFECTIVE AREA OPTICAL FIBER WITH LOW BEND LOSS 有权
    具有低弯曲损耗的大型有效区域光纤

    公开(公告)号：US20120106909A1

    公开(公告)日：2012-05-03

    申请号：US12915388

    申请日：2010-10-29

    Applicant: Scott Robertson Bickham ,  Dana Craig Bookbinder ,  Ming-Jun Li ,  Snigdharaj Kumar Mishra ,  Pushkar Tandon

    Inventor： Scott Robertson Bickham ,  Dana Craig Bookbinder ,  Ming-Jun Li ,  Snigdharaj Kumar Mishra ,  Pushkar Tandon

    IPC: G02B6/028

    CPC classification number: G02B6/03683 ,  G02B6/02019

    Abstract: 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 10%-μm2. The fibers exhibit an effective area at 1550 nm which is greater than 110 μm2.

    Abstract translation: 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，环绕所述内环形区域的凹陷环形区域，并且包括Dgr 3 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之间的差异大于0.01％，配置文件卷| V3 | 至少为10％-μm2。 纤维在1550nm处表现出大于110μm2的有效面积。

    Large Effective Area Fiber With GE-Free Core
    5.
    发明申请
    Large Effective Area Fiber With GE-Free Core 有权

    公开(公告)号：US20100195966A1

    公开(公告)日：2010-08-05

    申请号：US12696189

    申请日：2010-01-29

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

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

    IPC: G02B6/036

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

    Abstract: 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.

    Alkali and fluorine doped optical fiber
    8.
    发明授权
    Alkali and fluorine doped optical fiber 有权
    碱和氟掺杂光纤

    公开(公告)号：US07088900B1

    公开(公告)日：2006-08-08

    申请号：US11106860

    申请日：2005-04-14

    Applicant: Snigdharaj Kumar Mishra

    Inventor： Snigdharaj Kumar Mishra

    IPC: G02B6/00

    CPC classification number: C03C3/06 ,  C03B37/01446 ,  C03B37/01453 ,  C03B37/01807 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/50 ,  C03B2207/90 ,  G02B6/02242 ,  G02B6/0281 ,  G02B6/0285 ,  G02B6/0286 ,  G02B6/03633 ,  G02B6/0365

    Abstract: Disclosed is an optical fiber having a core of SiO2 doped with fluorine and an alkali metal oxide dopant. The alkali metal oxide is selected from the group consisting of K, Na, Li, Cs and Rb and is provided in amount of at least 20 ppm wt. %. The fiber has an inner cladding surrounding the core, which also includes fluorine. A relative refractive index of the inner cladding (Δ2%), measured relative to pure silica, is preferably between −0.39% and −0.7%. The fiber preferably exhibits attenuation at 1550 nm of less than or equal to 0.178 dB/km.

    Abstract translation: 公开了一种具有掺杂有氟和碱金属氧化物掺杂剂的SiO 2核的光纤。 碱金属氧化物选自K，Na，Li，Cs和Rb，其量为至少20ppm重量。 ％。 纤维具有围绕芯的内包层，其还包括氟。 相对于纯二氧化硅测量的内包层的相对折射率（ΔL2％）优选在-0.39％和-0.7％之间。 纤维优选在1550nm处表现出小于或等于0.178dB / km的衰减。

    Low bend loss optical fiber
    10.
    发明授权
    Low bend loss optical fiber 有权
    低弯曲损耗光纤

    公开(公告)号：US08873917B2

    公开(公告)日：2014-10-28

    申请号：US13473654

    申请日：2012-05-17

    Applicant: Paul Andrew Chludzinski ,  Dominick Fiordimalva ,  Peter Gottfried Hebgen ,  Snigdharaj Kumar Mishra ,  Sonya Marie Raney

    Inventor： Paul Andrew Chludzinski ,  Dominick Fiordimalva ,  Peter Gottfried Hebgen ,  Snigdharaj Kumar Mishra ,  Sonya Marie Raney

    IPC: G02B6/036 ,  G02B6/02

    CPC classification number: G02B6/03672 ,  G02B6/02223

    Abstract: 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 the third annular region comprises chlorine an amount greater than 0.2 weight percent in a region which is within 5 microns from the depressed annular region, wherein Δ1MAX>Δ4>Δ2>Δ3. The difference between Δ4 and Δ2 is greater than 0.01 and profile volume, |V3| is at least 50% Δμm2.

    Abstract translation: 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; 其中所述第三环形区域在距离所述凹陷环形区域在5微米以内的区域中包含大于0.2重量％的量的氯，其中＆D 1; ＆Dgr; 4和＆Dgr; 2之间的区别大于0.01和配置文件卷| V3 | 至少为50％＆Dgr;μm2。

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