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1. 发明授权

US06446468B1 Process for fabricating optical fiber involving overcladding during sintering 有权
标题翻译：涉及烧结过程中涉及外包层的光纤制造工艺
公开(公告)号：US06446468B1
公开(公告)日：2002-09-10
申请号：US09630066
申请日：2000-08-01
申请人： James William Fleming, Jr. , Sandeep Kakar , Richard M. Lum , Eric M. Monberg
发明人： James William Fleming, Jr. , Sandeep Kakar , Richard M. Lum , Eric M. Monberg
IPC分类号： C03B37027
CPC分类号： C03B37/02754 , C03B37/01211 , C03B37/01225 , C03B37/0126 , C03B37/01446
摘要： An improved technique for assembling and drawing fiber from preforms is provided. In one embodiment, the technique involves providing a core rod assembly comprising a core rod and a bushing attached at an end of the assembly. The core rod assembly is inserted into an unsintered overcladding tube, and secured to the tube such that the core rod assembly is suspended within. The overcladding tube and the core rod assembly are heated to sinter the overcladding tube and thereby form a preform assembly. During the heating step, the bushing comes into contact with the interior of the overcladding tube, and, because the bushing has a larger diameter than the core rod, an annular gap is maintained between the core rod assembly and the interior of the overcladding tube. It is then possible to attach a draw handle to the preform assembly, place the preform assembly into a draw tower, and draw fiber from the preform assembly by an overclad during draw technique.
摘要翻译：提供了一种用于从预成型件组装和拉制纤维的改进技术。在一个实施例中，该技术涉及提供一种芯棒组件，其包括芯棒和连接在组件端部的衬套。芯棒组件插入未烧结的外包管中，并固定到管上，使得芯棒组件悬挂在其中。将外包管和芯棒组件加热以烧结外包管，从而形成预制组件。在加热步骤期间，衬套与外包管的内部接触，并且由于衬套具有比芯棒更大的直径，所以在芯棒组件和外包管的内部之间保持环形间隙。然后可以将拉手拉到预成型件组件上，将预成型件组件放入拉制塔中，并且在拉伸技术期间通过外包装从预成型件组件中拉出纤维。

2. 发明授权

US4033667A Multimode optical fiber 失效
标题翻译：多模光纤
公开(公告)号：US4033667A
公开(公告)日：1977-07-05
申请号：US612626
申请日：1975-09-12
申请人： James William Fleming, Jr.
发明人： James William Fleming, Jr.
IPC分类号： C03B37/018 , C03C13/04 , G02B6/028 , G02B5/14
CPC分类号： G02B6/0288 , C03B37/01807 , C03C13/045 , C03C13/046 , C03B2201/10 , C03B2201/28 , C03B2203/26 , G02B6/02285 , G02B6/03627
摘要： A multimode optical fiber waveguide with graded refractive index for lessening modal dispersion depends upon simultaneous grading of both P.sub.2 O.sub.5 and B.sub.2 O.sub.3 within an otherwise generally unmodified silica glass. P.sub.2 O.sub.5 is at a maximum in the axial core region, while B.sub.2 O.sub.3 is generally the only modifier in the peripheral core region. The defined profile, which depends critically upon P.sub.2 O.sub.5 content in the axial composition and somewhat less critically upon the B.sub.2 O.sub.3 peripheral composition content, is near optimum from the standpoint of mode dispersion and remains so for the entire useful range of carrier wavelength (generally defined as from 0.5 to 1.1 .mu.m). Numerical aperture for fibers of the invention are typically at a level of 0.3.
摘要翻译：具有渐变折射率以减小模态色散的多模光纤波导取决于在通常未改性的二氧化硅玻璃内同时分选P2O5和B2O3。 P2O5在轴芯区域处于最大值，而B 2 O 3通常是外围核心区域中唯一的修饰剂。限定的轮廓，其主要取决于轴向组成中的P2O5含量和稍微不太关键的B2O3周边组成含量，从模式分散的观点来看是接近最佳的，并且对于载体波长的整个有用范围（通常定义为 0.5〜1.1μm）。本发明的纤维的数值孔径通常为0.3。

3. 发明授权

US07946133B2 Methods for modifying ovality of optical fiber preforms 有权
标题翻译：修改光纤预制棒椭圆度的方法
公开(公告)号：US07946133B2
公开(公告)日：2011-05-24
申请号：US12945133
申请日：2010-11-12
申请人： James William Fleming , Siu-Ping Hong , Paul Francis Glodis , Thomas John Miller , Zhi Zhou , David Kalish , Shunhe Xiong
发明人： James William Fleming , Siu-Ping Hong , Paul Francis Glodis , Thomas John Miller , Zhi Zhou , David Kalish , Shunhe Xiong
IPC分类号： C03B37/012
CPC分类号： C03B37/01225 , C03B37/01228 , C03B37/01861 , C03B37/027 , C03B37/02745 , C03B2203/36 , C03B2205/40 , C03B2205/72
摘要： Methods for modifying preform core ovality during and subsequent to the formation of an optical fiber preform. After MCVD deposition forms the core rod, but prior to overcladding of the core rod, the code rod may be etched to change its ovality. In order to etch the core rod, the core rod may be mounted to lathe, rotated by at least two rotors, and subjected to a heat source. Additionally, one of the at least two rotors may be phase-shifted from another one of the at least two rotors after the core rod is mounted on the lathe.
摘要翻译：在形成光纤预制件期间和之后修改预成型坯椭圆度的方法。在MCVD沉积后形成芯棒，但是在芯棒的外包层之前，可以蚀刻编码棒以改变其椭圆度。为了蚀刻芯棒，芯棒可以安装到车床上，旋转至少两个转子，并经受热源。此外，在将芯棒安装在车床上之后，至少两个转子中的一个可以从至少两个转子中的另一个转向相移。

4. 发明授权

US6041623A Process for fabricating article comprising refractory dielectric body 有权
$Process for fabricating article comprising refractory dielectric body$
标题翻译：制造包含耐火介电体的制品的方法
公开(公告)号：US6041623A
公开(公告)日：2000-03-28
申请号：US141440
申请日：1998-08-27
申请人： James William Fleming, Jr.
发明人： James William Fleming, Jr.
IPC分类号： C03B8/02 , C03B29/02 , C03B37/012 , C03B37/014 , C03B37/016 , C03C15/02 , C03C23/00 , C03B29/00
CPC分类号： C03C23/006 , C03B29/02 , C03B37/01237 , C03B37/0148 , C03B37/016 , C03C15/02
摘要： The smoothness of refractory dielectric bodies, particularly silica sol-gel bodies, is substantially improved by a relatively straightforward treatment. In particular, the surface of the body is treated with a plasma fireball, such as induced by a plasma torch. The treatment is able to reduce the roughness, as measured by RA, in overcladding tubes formed by a sol-gel process by at least a factor of 2, typically at least a factor of 5. It is also possible to improve the smoothness of silica tubes that are drawn from a billet. Typically, the process reduces the roughness of silica bodies to an RA of about 1 microinch or less.
摘要翻译：耐火介质体，特别是硅溶胶凝胶体的平滑度通过相对简单的处理得到显着提高。特别地，用诸如由等离子体焰炬诱导的等离子体火球来处理身体的表面。该处理能够通过RA测量在由溶胶 - 凝胶法形成的外包管至少2倍，通常至少为5倍的范围内减小粗糙度。还可以提高二氧化硅的平滑度从钢坯中抽出的管。通常，该方法将二氧化硅体的粗糙度降低至约1微英寸或更小的RA。

5. 发明授权

US5698124A Magnesia fiber draw furnace 失效
标题翻译：氧化镁纤维拉丝炉
公开(公告)号：US5698124A
公开(公告)日：1997-12-16
申请号：US551240
申请日：1995-10-31
申请人： Frank Vincent DiMarcello , James William Fleming, Jr. , Arthur Clifford Hart, Jr. , Richard Garner Huff , Karen S. Kranz
发明人： Frank Vincent DiMarcello , James William Fleming, Jr. , Arthur Clifford Hart, Jr. , Richard Garner Huff , Karen S. Kranz
IPC分类号： C03B37/027 , C03B37/029 , F27B1/09 , F27B9/36 , F27D11/06 , G02B6/00 , H05B6/02 , H05B6/14 , H05B6/22 , H05B6/10 , F27D1/00
CPC分类号： H05B6/22 , C03B37/029 , C03B2205/64 , C03B2205/70
摘要： A fiber drawing apparatus is provided with an improved fiber draw furnace wherein an inner zirconia tube is surrounded by a radially-spaced annular insulating region of magnesia within a silica beaker. While the magnesia has a melting point approximately the same as zirconia, the electrical conductivity of magnesia is substantially lower, enabling it to withstand higher RF power. Moreover magnesia is more soluble than zirconia in silica, reducing the likelihood of particulate contamination of the fiber.
摘要翻译：纤维拉伸装置设置有改进的纤维拉制炉，其中内部氧化锆管被二氧化硅烧杯内的氧化镁的径向隔开的环形绝缘区域包围。虽然氧化镁具有与氧化锆大致相同的熔点，但是氧化镁的电导率显着较低，使得其能够承受更高的RF功率。此外，氧化镁在二氧化硅中比氧化锆更易溶，降低了纤维颗粒污染的可能性。

6. 发明授权

US3989350A Multimode optical fiber 失效
标题翻译：多模光纤
公开(公告)号：US3989350A
公开(公告)日：1976-11-02
申请号：US612646
申请日：1975-09-12
申请人： Leonard George Cohen , James William Fleming, Jr. , William George French
发明人： Leonard George Cohen , James William Fleming, Jr. , William George French
IPC分类号： C03B37/018 , C03C13/04 , G02B6/028 , G02B5/14
CPC分类号： G02B6/0288 , C03B37/01807 , C03C13/045 , C03C13/046 , C03B2201/10 , C03B2203/26 , G02B6/02285 , G02B6/03627
摘要： A multimode optical fiber waveguide with graded refractive index for lessening modal dispersion with the gradient produced at least in part by radially decreasing boron oxide content outwardly from the core center within a high silica glass core minimizes modal dispersion by use of a non-parabolic grading function. The optimum gradient for a simple binary borosilicate system for a wavelength of from approximately 0.5 to 1.1 micrometers corresponds with .alpha. = 1.77 .+-. 10 percent in the equation n = n.sub.1 [1-2.DELTA.(r/a).sup..alpha.].sup.1/2, in which n.sub.1 is the axial core index r is the distance from the fiber axis, a is the core radius, .DELTA. is the relative index difference between core center and cladding and .alpha. is a power law exponent which characterizes the profile.
摘要翻译：具有渐变折射率的多模光纤波导，用于减少模态色散，至少部分地通过在高二氧化硅玻璃核心内从核心中心径向减少氧化硼含量产生的梯度，通过使用非抛物线分级函数来最小化模态色散。对于波长为约0.5至1.1微米的简单二元硼硅酸盐系统的最佳梯度对应于等式中的α= 1.77 +/- 10％n = n1 [1-2 DELTA（r / a）1） / 2，其中n1是轴芯指数r是距纤维轴的距离，a是芯半径，DELTA是芯中心和包层之间的相对折射率差，α是表征轮廓的幂律指数。

7. 发明授权

US07421174B2 Multi-wavelength, multimode optical fibers 有权
标题翻译：多波长多模光纤
公开(公告)号：US07421174B2
公开(公告)日：2008-09-02
申请号：US11511174
申请日：2006-08-28
申请人： James William Fleming, Jr. , George Edward Oulundsen, III
发明人： James William Fleming, Jr. , George Edward Oulundsen, III
IPC分类号： G02B6/028
CPC分类号： G02B6/03627 , C03B2201/12 , C03B2201/28 , C03B2201/31 , C03B2201/32 , C03B2203/26 , C03C13/046 , G02B6/0288
摘要： A silicate optical fiber comprises a graded index silicate core co-doped with aluminum oxide, phosphorus oxide, germanium oxide and fluorine in unique compositions that we have discovered allow multimode, multi-wavelength operation without significant intermodal dispersion. Illustratively, the core comprises a multiplicity of compositions whose refractive indices are graded from a maximum at or near the center of the core to a minimum at the interface with the cladding. Each core composition resides within a sub-volume of a 5 dimensional phase space in which an optimum core profile shape is essentially constant over the wavelength range of operation of the fiber. For operation in the wavelength range of about 0.78 μm to 1.55 μm, each composition preferably comprises no more than approximately 6 mole % Al2O3, 9 mole % P2O5, 6 mole % GeO2, 6 mole % F, and 90-100 mole % SiO2.
摘要翻译：硅酸盐光纤包括与氧化铝，氧化磷，氧化锗和氟共掺杂的分级指数硅酸盐芯，其独特的组成，我们发现允许多模多波长操作，而没有显着的联合分散。说明性地，芯包括多个组合物，其折射率从芯的中心处或附近的最大值到与包层的界面处最小。每个核心组合物位于5维相位空间的子体积中，其中最佳核心轮廓形状在光纤的操作的波长范围上基本上是恒定的。为了在约0.78μm至1.55μm的波长范围内操作，每个组合物优选包含不超过约6摩尔％的Al 2 O 3 N 3，9摩尔％P

8. 发明授权

US06305195B1 Process for fabricating silica article involving joining of discrete bodies 有权
标题翻译：制造涉及离散体的接合的二氧化硅制品的方法
公开(公告)号：US06305195B1
公开(公告)日：2001-10-23
申请号：US09321076
申请日：1999-05-27
申请人： James William Fleming, Jr. , George John Zydzik
发明人： James William Fleming, Jr. , George John Zydzik
IPC分类号： C03B37018
CPC分类号： C03B23/207 , C03B37/01205 , C03B37/02736 , C03B2205/30
摘要： An improved process for fabricating a refractory dielectric article, in particular silica optical fiber, is provided. The fabrication process involves joining of two elongated bodies—typically silica preforms—end-to-end by use of an isothermal plasma torch technique. A long preform made in this manner allows drawing of optical fiber with less down-time and waste than current processes. The plasma torch technique also produces low perturbations within the resultant preform, thereby increasing the amount of usable fiber.
摘要翻译：提供了制造难熔电介质制品，特别是二氧化硅光纤的改进方法。制造过程涉及通过使用等温等离子体焰炬技术来连接两个细长体 - 通常是二氧化硅预制件 - 端对端。以这种方式制成的长预制件允许拉伸光纤比当前工艺更少的停机时间和浪费。等离子体焰炬技术还在所得预制件内产生低扰动，从而增加可用纤维的量。

9. 发明授权

US5861047A Method for manufacturing an article comprising a refractory dielectric body 失效
$Method for manufacturing an article comprising a refractory dielectric body$
标题翻译：制造包含耐火介电体的制品的方法
公开(公告)号：US5861047A
公开(公告)日：1999-01-19
申请号：US939142
申请日：1997-09-29
申请人： James William Fleming, Jr. , Robert M. Pafchek
发明人： James William Fleming, Jr. , Robert M. Pafchek
IPC分类号： C03B29/02 , C03B37/012 , C03B37/014 , C03C23/00 , C03C25/62 , C03B37/018
CPC分类号： C03C25/6293 , C03B29/02 , C03B37/01237 , C03B37/0148 , C03B37/01493 , C03C23/006 , C03B2201/03 , C03B2201/04
摘要： A refractory dielectric body is heated with a plasma torch at conditions which do not result in substantial removal of a surface portion of the body, yet which are sufficient to reduce both surface and bulk impurities. Typically, the body is solid, e.g., a rod as opposed to a tube, and is treated with the plasma in the absence of simultaneous deposition of material onto the body. Advantageously, an isothermal plasma torch is utilized, and the torch advantageously produces an oxygen or oxygen-containing plasma. The invention is useful for reducing chlorine impurities by at least about 30% to a depth of at least about 10 .mu.m, with accompanying reduction of hydroxyl impurities. The invention thus provides a useful method for reducing the concentration of impurities that contribute to imperfections during the process of drawing fiber from an optical fiber preform, without requiring substantial removal of the surface of the preform.
摘要翻译：耐火电介质体在等离子体焰炬的条件下被加热，其条件不会导致本体的表面部分的实质去除，而这足以减少表面和体积杂质。通常，身体是固体的，例如与管相反的杆，并且在没有材料同时沉积到身体上的情况下用等离子体处理。有利地，使用等温等离子体焰炬，并且炬有利地产生含氧或含氧的等离子体。本发明可用于将氯杂质减少至少约30％至至少约10μm的深度，伴随着羟基杂质的减少。因此，本发明提供了一种有用的方法，用于在从纤维预制棒中拉伸纤维的过程中减少有助于缺陷的杂质的浓度，而不需要基本上去除预型体的表面。

10. 发明申请

US20110056245A1 METHODS FOR MODIFYING OVALITY OF OPTICAL FIBER PREFORMS 有权
标题翻译：用于修改光纤预制光栅的方法
公开(公告)号：US20110056245A1
公开(公告)日：2011-03-10
申请号：US12945133
申请日：2010-11-12
申请人： James William Fleming , Siu-Ping Hong , Paul Francis Glodis , Thomas John Miller , Zhi Zhou , David Kalish , Shunhe Xiong
发明人： James William Fleming , Siu-Ping Hong , Paul Francis Glodis , Thomas John Miller , Zhi Zhou , David Kalish , Shunhe Xiong
IPC分类号： C03C25/68 , B29D11/00
CPC分类号： C03B37/01225 , C03B37/01228 , C03B37/01861 , C03B37/027 , C03B37/02745 , C03B2203/36 , C03B2205/40 , C03B2205/72
摘要： Methods for modifying preform core ovality during and subsequent to the formation of an optical fiber preform. After MCVD deposition forms the core rod, but prior to overcladding of the core rod, the code rod may be etched to change its ovality. In order to etch the core rod, the core rod may be mounted to lathe, rotated by at least two rotors, and subjected to a heat source. Additionally, one of the at least two rotors may be phase-shifted from another one of the at least two rotors after the core rod is mounted on the lathe.
摘要翻译：在形成光纤预制件期间和之后修改预成型坯椭圆度的方法。在MCVD沉积后形成芯棒，但是在芯棒的外包层之前，可以蚀刻编码棒以改变其椭圆度。为了蚀刻芯棒，芯棒可以安装到车床上，旋转至少两个转子，并经受热源。此外，在将芯棒安装在车床上之后，至少两个转子中的一个可以从至少两个转子中的另一个转向相移。

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