Microwave measuring apparatus for continuously and without contact
measuring the thickness of a thin conducting layer of a running
insulating support such as a fiber or a tape
    1.
    发明授权
    Microwave measuring apparatus for continuously and without contact measuring the thickness of a thin conducting layer of a running insulating support such as a fiber or a tape 失效
    微波测量装置,连续测量不锈钢薄壁导体层的厚度,作为纤维或胶带进行绝缘支撑

    公开(公告)号:US5241279A

    公开(公告)日:1993-08-31

    申请号:US858599

    申请日:1992-03-27

    IPC分类号: G01B15/00 G01B15/02 G01N22/02

    CPC分类号: G01B15/00 G01B15/02 G01N22/02

    摘要: Apparatus for measuring continuously and without contact the thickness of a thin conducting layer on a running insulating support of the fiber or tape kind, wherein the apparatus includes:a microwave generator associated by coupling means to a resonant cavity comprising a metal wire in the form of a helix which is fixed at its ends to two metal plates, said insulating support being suitable for running substantially along the axis of said helix; andmeans for coupling said cavity to a detection device for detecting the transmission factor of said cavity, which factor is directly a function of said thickness, said measurement being performed at constant frequency.

    摘要翻译: 用于在纤维或胶带类型的运行的绝缘支撑件上连续地和不接触地测量薄导电层的厚度的装置,其中所述装置包括:通过耦合装置与谐振腔相连的微波发生器,所述谐振腔包括以下形式的金属线: 螺旋固定在其两端的两个金属板,所述绝缘支撑件适于基本上沿所述螺旋线的轴线运行; 以及用于将所述空腔耦合到用于检测所述空腔的透射系数的检测装置的装置,该因子直接作为所述厚度的函数,所述测量以恒定频率执行。

    Method of applying an amorphous boron-based protective coating to an
optical fiber, and an optical fiber including such a coating
    2.
    发明授权
    Method of applying an amorphous boron-based protective coating to an optical fiber, and an optical fiber including such a coating 失效
    将无定形硼基保护涂层施加到光纤的方法以及包括这种涂层的光纤

    公开(公告)号:US5717808A

    公开(公告)日:1998-02-10

    申请号:US632414

    申请日:1996-04-24

    摘要: A method of applying an amorphous boron-based protective coating to an optical fiber comprising an optical core enclosed in optical cladding, both made of a silica-based material, wherein the boron is applied to the surface of said optical fiber chemically from the vapor phase at a temperature lying in the range 1050.degree. C. to 1250.degree. C., by reducing boron chloride BCl.sub.3 by means of hydrogen H.sub.2. The amorphous boron protective coating imparts mechanical protection to the fiber, and enhanced abrasion resistance, enabling the fiber to be used in optical cables of high capacity and that are highly compact. The thickness of the resin coating can be about half that required when a carbon protective coating is used, and can even be eliminated. The coating further provides sealing properties comparable to those provided by a carbon coating.

    摘要翻译: PCT No.PCT / FR95 / 01107 Sec。 371日期:1996年4月24日 102(e)日期1996年4月24日PCT提交1995年8月23日PCT公布。 公开号WO96 / 06055 日期1996年2月29日一种将无定形硼基保护涂层施加到光纤上的方法,所述光纤包括由光学包层包围的光学芯,二者由二氧化硅基材料制成,其中硼施加到所述光纤的表面 在1050℃至1250℃的温度下,通过用氢气H 2还原氯化硼BCl 3从蒸气相中化学地制备。 无定形硼保护涂层为纤维提供机械保护,并提高耐磨性,使光纤能够用于高容量的光缆,并且非常紧凑。 树脂涂层的厚度可以是使用碳保护涂层所需的一半,甚至可以消除。 涂层进一步提供与由碳涂层提供的密封性能相当的密封性能。

    Apparatus for surface treatment by corona discharge
    4.
    发明授权
    Apparatus for surface treatment by corona discharge 失效
    CORONA放射治疗表面处理装置

    公开(公告)号:US5236536A

    公开(公告)日:1993-08-17

    申请号:US964840

    申请日:1992-10-22

    IPC分类号: B29C59/10 B29C59/12

    摘要: Apparatus for treating the surface of a body by corona discharge, the apparatus comprising:a reaction enclosure through which said body to be treated can run along a "through" axis;an electrode raised to a "treatment" potential;a counter-electrode raised to a potential that is lower in absolute value than the potential of said electrode, said counter-electrode surrounding said through axis and said electrode and said counter-electrode together being disposed so as to define a "plasma-generating" zone in the vicinity of said through axis and in which said corona discharge takes place; andat least one passage formed in said enclosure to feed a plasma-generating reagent gas for treatment purposes;wherein said electrode is provided with a plurality of portions having small radius of curvature, i.e. having ends that are tapering or pointed, said portions pointing towards said through axis, and being disposed in such a manner that, when projected onto a plane orthogonal to said through axis, their small-radius-of-curvature ends surround the projection onto said plane both of said through axis and of the outline of said body to be treated.

    摘要翻译: 用于通过电晕放电来处理身体表面的装置,所述装置包括:所述待处理的物体可以通过所述反应外壳沿着“通过”轴线行进; 电极升高到“治疗”潜力; 相对电极升高到比所述电极的电位低的绝对值的电位,所述对电极围绕所述贯通轴线,并且所述电极和所述对置电极一起设置为限定“等离子体产生” 在所述贯穿轴线附近的区域,其中发生所述电晕放电; 以及在所述外壳中形成的至少一个通道,用于供给用于处理目的的产生等离子体的试剂气体; 其中所述电极具有多个具有小曲率半径的部分,即具有锥形或尖端的端部,所述部分指向所述贯穿轴线,并且以这样的方式设置,使得当投影到与所述直线正交的平面上时 通过轴线,它们的小半径曲率端围绕所述通孔和所述要被处理体的轮廓的所述平面上的投影。

    High-frequency electric furnace
    5.
    发明授权
    High-frequency electric furnace 失效
    高频电炉

    公开(公告)号:US4142063A

    公开(公告)日:1979-02-27

    申请号:US889306

    申请日:1978-03-23

    摘要: The invention relates to a high-frequency furnace whose wall is formed by superposed wall-forming members. This furnace includes in particular an inner tubular wall comprising a zirconia tube (38), an alumina washer (39) laid on the zirconia tube and a silica tube (40) laid on the washer. There is a large groove (41) in a top plate (37) to accommodate the silica tube (40). The furnace also includes an outer tube (36) of silica. This structure makes it possible to accommodate differential expansion of the zirconia and the silica in two separate steps. The axial difference is accommodated at the groove (41) while the radial difference is accomodated at the washer (39). Leakage of inert gas pumped into the chamber during operation can then be maintained within acceptable limits throughout the temperature range. Application to the production of optical fibers.

    摘要翻译: 本发明涉及一种高压炉,其壁由叠置的壁形成构件形成。 该炉特别包括包含氧化锆管(38),放置在氧化锆管上的氧化铝垫圈(39)和铺设在垫圈上的石英管(40)的内管壁。 在顶板(37)中有一个大的凹槽(41)以容纳二氧化硅管(40)。 炉还包括二氧化硅的外管(36)。 这种结构使得可以在两个单独的步骤中适应氧化锆和二氧化硅的不同膨胀。 在凹槽(41)处容纳轴向差异,同时在垫圈(39)处容纳径向差异。 在运行过程中泵入室内的惰性气体泄漏可以在整个温度范围内保持在可接受的范围内。 适用于生产光纤。

    Optical fiber coated with an amorphous boron protective layer, and a
method of depositing such a layer
    6.
    发明授权
    Optical fiber coated with an amorphous boron protective layer, and a method of depositing such a layer 失效
    涂覆有无定形硼保护层的光纤,以及沉积这种层的方法

    公开(公告)号:US5717809A

    公开(公告)日:1998-02-10

    申请号:US632415

    申请日:1996-04-24

    摘要: An optical fiber comprising an optical core enclosed in optical cladding, both made of a silica-based material, and a protective layer constituted by amorphous boron. The amorphous boron layer is deposited on a non-crystalline carbon which is itself deposited directly on the optical cladding. Also, a method is provided for depositing an amorphous boron layer on an optical fiber and includes a deposition step of depositing a layer of carbon on the fiber, followed by a subsequent step of depositing the amorphous boron protective layer chemically from the vapor phase on the layer of carbon.

    摘要翻译: PCT No.PCT / FR95 / 01106 Sec。 371日期:1996年4月24日 102(e)日期1996年4月24日PCT提交1995年8月23日PCT公布。 第WO96 / 06054号公报 日期:1996年2月29日包括由二氧化硅基材料制成的光学包层中的光学核心和由无定形硼构成的保护层的光纤。 无定形硼层沉积在非结晶碳上,其本身直接沉积在光学包层上。 此外,提供了一种用于在光纤上沉积非晶硼层的方法,并且包括在纤维上沉积碳层的沉积步骤,随后是从蒸气相化学地将非晶态硼保护层沉积在 碳层。

    Monomode optical fiber
    7.
    发明授权
    Monomode optical fiber 失效
    单模光纤

    公开(公告)号:US5703986A

    公开(公告)日:1997-12-30

    申请号:US687370

    申请日:1996-08-02

    IPC分类号: G02B6/028 G02B6/02

    摘要: The present invention concerns a monomode optical fiber comprising an optical core for guiding the majority of light waves, surrounded by an optical sheath, the difference between the maximum refraction coefficient of the core and that of the optical sheath being indicated as .DELTA.n and the radius of the core being indicated as a, characterized in that: a .epsilon.�0.6a.sub.c :1.1a.sub.c !, a.sub.c being provided, in .mu.m, by the formula: ##EQU1## where k=2.pi./.lambda., .lambda. being (in .mu.m) the wavelength of the transmission, and where n.sub.g is the coefficient of said optical sheath, equal within 10.sup.-3 to that of pure silica, .DELTA.n is greater than or equal to 0.01, and in that, .phi. being the diameter of said optical sheath, in .mu.m: .phi..epsilon.�.phi..sub.min :100!, .phi..sub.min being provided, in .mu.m, by the formula: ##EQU2## where ##EQU3##

    摘要翻译: PCT No.PCT / FR95 / 01711 Sec。 371日期:1996年8月2日 102(e)日期1996年8月2日PCT 1995年12月21日PCT PCT。 出版物WO96 / 20420 PCT 日期1996年7月4日本发明涉及一种单模光纤,其包括用于引导由光学护套包围的大部分光波的光纤芯,芯体的最大折射系数与光学护套的最大折射系数之间的差被表示为 DELTA n,并且芯的半径表示为a,其特征在于:以μm计,以μm提供ε[0.6ac:1.1ac],ac,其中k =2π/λ, λ为(以μm为单位)的透射波长,并且其中ng是所述光学护套的系数,等于纯二氧化硅的系数在10-3以内,DELTA n大于或等于0.01,并且其中phi 作为所述光学护套的直径,以μm为单位:phi min,以μm为单位,以μm为单位,以phi min = 125×+ TR 提供phi min,其中

    Method of manufacturing a multi-core optical fiber
    8.
    发明授权
    Method of manufacturing a multi-core optical fiber 失效
    制造多芯光纤的方法

    公开(公告)号:US5944867A

    公开(公告)日:1999-08-31

    申请号:US26120

    申请日:1998-02-19

    IPC分类号: C03B37/012 C03B37/028

    摘要: A method of manufacturing a multi-core optical fiber, the method including assembling together a plurality of substantially identical single-core optical fiber preforms (2', 2"), referred to as "single-core preforms", each of which includes a core bar (3) surrounded by a layer of optical cladding (4), so as to form a "multi-core preform" (10) and drawing down the multi-core preform (10) so as to obtain the multi-core optical fiber. The assembly step includes securing the single-core preforms (2', 2") to one another by fusing them over their entire lengths or over portions thereof along their tangential lines of contact (T), without inserting the multi-core preform (10) into a holding tube. A vacuum is maintained in the preform during the drawing step, the vacuum being formed before or during the drawing step.

    摘要翻译: 一种制造多芯光纤的方法,所述方法包括将多个基本上相同的单芯光纤预制棒(2',2“)组装在一起,被称为”单芯预制棒“,每个包括 由光学包层(4)包围的芯棒(3),以形成“多芯预制棒”(10)并拉下多芯预制棒(10)以获得多芯 光纤。 组装步骤包括通过将单芯预成型件(2',2“)彼此的整个长度或其部分沿其切线(T)熔合而彼此固定,而不插入多芯预制件 10)进入保持管。 在拉伸步骤期间在预成型件中保持真空,在拉拔步骤之前或期间形成真空。

    Method of manufacturing a multi-core optical fiber
    9.
    发明授权
    Method of manufacturing a multi-core optical fiber 失效
    制造多芯光纤的方法

    公开(公告)号:US5792233A

    公开(公告)日:1998-08-11

    申请号:US560796

    申请日:1995-11-21

    IPC分类号: C03B37/012 C03B37/028

    摘要: A method of manufacturing a multi-core optical fiber, the method including assembling together a plurality of substantially identical polished single-core optical fiber preforms (2', 2"), referred to as "single-core preforms", each of which includes a core bar (3) surrounded by a layer of optical cladding (4), so as to form a "multi-core preform" (10), and drawing down the multi-core preform (10) so as to obtain the multi-core optical fiber. The assembly step includes securing the single-core preforms (2', 2") to one another by fusing them over their entire lengths or over portions thereof along their tangential lines of contact (T), without inserting the multi-core preform (10) into a holding tube. A vacuum is maintained in the preform during the drawing step, the vacuum being formed before or during the drawing step.

    摘要翻译: 一种制造多芯光纤的方法,该方法包括将多个基本相同的抛光单芯光纤预制棒(2',2“)组装在一起,被称为”单芯预制棒“ 包括由光学包层(4)包围的芯棒(3),以形成“多芯预制棒”(10),并拉下多芯预制棒(10)以获得多 芯光纤。 组装步骤包括通过将单芯预成型件(2',2“)彼此的整个长度或其部分沿其切线(T)熔合而彼此固定,而不插入多芯预制件 10)进入保持管。 在拉伸步骤期间在预成型件中保持真空,在拉拔步骤之前或期间形成真空。

    Method and apparatus for heating a silica optical fiber in a
fiber-drawing installation
    10.
    发明授权
    Method and apparatus for heating a silica optical fiber in a fiber-drawing installation 失效
    用于在光纤安装中加热二氧化硅光纤的方法和装置

    公开(公告)号:US5247147A

    公开(公告)日:1993-09-21

    申请号:US858586

    申请日:1992-03-27

    CPC分类号: H05B6/788 Y10T428/12444

    摘要: Apparatus for heating a silica optical fiber in a fiber-drawing installation. The apparatus is disposed at the outlet of a fiber-drawing oven to raise the optical fiber to a temperature greater than 1000.degree. C. The apparatus is constituted by a microwave generator coupled to a resonant cavity formed by a helically-wound metal wire helix fixed at opposite ends to two short circuit metal plates respectively, with the optical fiber running substantially along the axis of the helix and the helix concentric about the running fiber.

    摘要翻译: 用于在光纤拉制装置中加热二氧化硅光纤的装置。 该设备设置在拉丝炉的出口处,以将光纤升高到大于1000℃的温度。该装置由耦合到谐振腔的微波发生器构成,该谐振腔由螺旋缠绕的金属线螺旋固定 在两个短路金属板的相对端,光纤基本上沿着螺旋线的轴线延伸,并且螺旋线围绕运行的光纤同心地行进。