PROCESS FOR PRODUCING OPTICAL FIBER
    21.
    发明申请
    PROCESS FOR PRODUCING OPTICAL FIBER 审中-公开
    生产光纤的工艺

    公开(公告)号:US20090095024A1

    公开(公告)日:2009-04-16

    申请号:US12272101

    申请日:2008-11-17

    Abstract: To provide a process for producing an air cladding type optical fiber by a method other than extrusion molding.A process for producing an optical fiber comprising a hollow glass fiber with an optical transmission glass held to extend in its axial direction at its center, which process comprises a step of heating and drawing a glass rod having three or more holes with an equal diameter provided around its center axis to extend in its axial direction where the distance between each hole and the axis is mutually equal and the distance between adjacent holes is mutually equal, and a portion surrounded by such holes will constitute said optical transmission glass, while applying pressure to expand the holes with one end of the rod closed, to form a preform wherein glass between the holes is in a plate form, and subjecting the preform to wire drawing to form an optical fiber in which said optical transmission glass is held by plate glass.

    Abstract translation: 提供通过除挤出成型以外的方法制造空气包层型光纤的方法。 一种制造光纤的方法,该光纤包括中空玻璃纤维,该中空玻璃纤维具有保持其轴向在其中心延伸的光学透射玻璃,该方法包括加热和拉制具有三个或更多个具有相同直径的孔的玻璃棒的步骤 围绕其中心轴线延伸,每个孔和轴之间的距离相互相等并且相邻孔之间的距离相互相等,并且由这些孔包围的部分将构成所述光学透射玻璃,同时施加压力 在孔的一端封闭的情况下扩大孔,形成预成型件,其中,孔之间的玻璃呈板状,并对预成型件进行拉丝,形成光学玻璃。

    OPTICAL FIBER WITH MICRO-STRUCTURED CLADDING
    24.
    发明申请
    OPTICAL FIBER WITH MICRO-STRUCTURED CLADDING 有权
    具有微结构封装的光纤

    公开(公告)号:US20060120678A1

    公开(公告)日:2006-06-08

    申请号:US11004344

    申请日:2004-12-02

    Abstract: An optical fiber having a length can include a core and at least one cladding disposed about the core, where the one cladding can comprise at least first volumetric regions having a first refractive index n1 and second volumetric regions having a second refractive index n2, different from n1, and the first and second volumetric regions in any cross-section taken through the fiber can be randomly intermingled with one another, where the random intermingling of the first and second volumetric regions changes with changes in the location of the cross-section along the length of the fiber.

    Abstract translation: 具有长度的光纤可以包括芯和围绕芯设置的至少一个包层,其中一个包层可以包括具有第一折射率n 1的第一体积区域和具有第一体积区域的第二体积区域, 与n 1不同的第二折射率n 2,以及通过光纤的任何横截面中的第一和第二体积区域可以彼此随机地混合, 其中第一和第二体积区域的随机混合随着沿着纤维长度的横截面位置的变化而改变。

    Transparent ceramics and method for producing the same
    25.
    发明申请
    Transparent ceramics and method for producing the same 审中-公开
    透明陶瓷及其制造方法

    公开(公告)号:US20040167010A1

    公开(公告)日:2004-08-26

    申请号:US10474217

    申请日:2003-09-29

    Abstract: An object of the present invention is to provide a transparent ceramics which exhibits favorable slope efficiency well comparable to that of a single crystal when employed in solid lasers, yet having a uniform quality and internally free from pores, foreign matters, or granular structures. Another object of the present invention is to provide a production method therefor. The above problems have been overcome by a transparent YAGnullceramics (YAG: Y3Al5O12) the physical properties thereof is improved by doping a metallic element, provided that the concentration of the doped metallic elements is in a range of from 0.1 to 20% by weight, that the concentration of nitrogen is 500 ppm or lower, that said ceramics has pores and foreign matters accounting for less than 100 mm2 per 100 cm3 as expressed by their projected area, and that it has an internal transmittance for visible radiations of 50 %/cm of higher. The metallic element for doping the YAGnullceramic is Nd.

    Abstract translation: 本发明的目的是提供一种透明陶瓷,其在固体激光器中使用时具有良好的与单晶相当的斜率效率,但是具有均匀的质量并且内部没有孔,异物或颗粒结构。 本发明的另一个目的是提供一种生产方法。 通过透明YAG陶瓷(YAG:Y3Al5O12)克服了上述问题,通过掺杂金属元素改善其物理性能,只要掺杂的金属元素的浓度在0.1至20重量%的范围内 氮的浓度为500ppm以下,所述陶瓷具有由其投影面积表示的孔隙和异物占100cm 3的小于100mm 2,并且其具有内部透射率 50%/ cm以上的可见辐射。 用于掺杂YAG陶瓷的金属元素是Nd。

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