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    Double cladding optical fiber and optical fiber amplifier
    44.
    发明公开
    Double cladding optical fiber and optical fiber amplifier 审中-公开
    光纤与双包层和光纤放大器

    公开(公告)号：EP1033795A3

    公开(公告)日：2001-10-17

    申请号：EP00301646.6

    申请日：2000-03-01

    申请人： NEC CORPORATION

    发明人： Toyohara, Atsushi

    IPC分类号： H01S3/067 ,  G02B6/16

    CPC分类号： G02B6/03633 ,  G02B6/03605 ,  H01S3/06708 ,  H01S3/06729

    摘要： A double-cladding fiber and an optical fiber amplifier, which have an equivalent function to a pumping-light cut filter with a simple structure, are provided. With the double-cladding fiber, a core transmitting a signal light is covered with a first clad having a refractive index of n7b. This first clad is covered with a second clad. At an output end, a designated length of the second clad is removed and a substance having a refractive index of "n" ("n" > n7b) is coated on the first clad on the part from which the second clad is removed. With this structure, a remaining pumping light, after the signal light is pumped by a pumping laser diode, leaks to this coated part. The substance-coated part works as a filter for the remaining pumping light. As a result, a signal-to-noise ratio (SNR) of the amplified signal light can be improved with this simple structure.

    Partially detached core optical waveguide
    45.
    发明公开
    Partially detached core optical waveguide 失效
    Optischer Wellenleiter mit teilweiseabgelöstemKern。

    公开(公告)号：EP0622648A2

    公开(公告)日：1994-11-02

    申请号：EP94105675.6

    申请日：1994-04-13

    申请人： Corning Incorporated

    发明人： Berkey, George Edward

    IPC分类号： G02B6/16 ,  G02B6/22 ,  C03B37/00 ,  G02B6/10 ,  C03B37/012 ,  C03B37/027

    CPC分类号： G02B6/03638 ,  C03B37/01211 ,  C03B37/01217 ,  C03B37/027 ,  C03B37/02709 ,  C03B2203/10 ,  C03B2203/14 ,  C03B2203/30 ,  C03B2203/32 ,  C03B2205/10 ,  G02B6/02 ,  G02B6/03605 ,  G02B6/03622 ,  G02B6/105

    摘要： Purpose : An optical waveguide fiber which is made substantially bend resistant.
    Constitution : A core having a central region with a higher index of refraction than an integral surrounding region is joined for a segment of its periphery to a clad member, so as to leave a gap between core and cladding.
    Bend resistance improvement begins when a relatively small fraction, for example, about half, of the core member periphery is detached. A detachment percentage between about 50% and 99.9% of the core member periphery should be achieved, with the preferred range between about 95% and 99.9%.
    Waveguides include single mode, multimode and polarization maintaining waveguides. Additional core isolation from external forces is provided by an additional semi-detached cladding layer. Only a segment of the periphery of core member (6) is fused to clad (8) along the length of waveguide (5). Also, only a segment of the periphery of clad (8) is fused to clad (10) along the length of waveguide (5). The gaps (7) and (9), which are present along the length of waveguide (5), serve to provide a double isolation of core member (6) from external forces. That is, the stress fields set up in clad layer (10) are only partially transmitted to clad (8), because of the limited contact between the two clads. Likewise, stress fields experienced by clad (8) cannot be fully transmitted to core member (6) due to the limited area of contact between these two waveguide parts. The area of attachment between core member (6) and clad (8) may occur at any part of the inside surface of clad (8). Also, the orientation of the area of attachment between clad (8) and clad (10) may occur at any part of the inside surface of clad (10). In general, the area of attachment of clad (8) to clad (10) and the area of attachment of core member (6) and clad (8) do not influence one another.

    摘要翻译： 光波导纤维包括具有中心区域和整体环绕区域的芯构件。 中心区域具有比周围区域更高的折射率。 沿着芯构件的周边的一段，沿着芯构件的长度设置包层构件，从而沿着光波导纤维的长度留下间隙。 芯部件周边部分，其包层部件和芯部部件沿其连接的周边部分的轴向截面的周长小于约50％且大于约0.1％。 波导可以由石英玻璃制成并且被配置为单模或多模。

    Method of producing optical fiber, and fiber produced by the method
    46.
    发明公开
    Method of producing optical fiber, and fiber produced by the method 失效
    一种用于制造光学纤维和纤维通过该方法生产的过程。

    公开(公告)号：EP0434237A2

    公开(公告)日：1991-06-26

    申请号：EP90312789.2

    申请日：1990-11-23

    申请人： AT&T Corp.

    发明人： Glodis, Paul Francis ,  Walker, Kenneth Lee

    IPC分类号： C03B37/012 ,  G02B6/22

    CPC分类号： G02B6/03655 ,  C03B37/01211 ,  C03B2203/22 ,  C03B2203/24 ,  G02B6/03605 ,  G02B6/03627 ,  G02B6/0365 ,  Y02P40/57

    摘要： The inventive method of producing optical fiber comprises producing a rod-like silica-based body, overcladding the body with pre-existing silica-based glass, and drawing fiber from the thus produced preform. The rod-like body comprises a core (10) and a first cladding (11) that surrounds the core, both consisting of deposited glass, and further comprises a second cladding (e.g., 12) that surrounds the first cladding and that is derived from a substrate tube that has a refractive index n₂ o , the refractive index of vitreous silica. The overcladding (e.g., 13) comprises pre-existing glass, and comprises a third cladding region that has a refractive index n₃ ≦. n o . Typically, the overcladding material is derived from one or more overcladding tubes. The inventive method can be used to produce preforms capable of yielding more fiber than prior art rod-in-tube preforms, potentially resulting in significant cost reduction without performance penalties. A variety of advantageous embodiments of the inventive methods, as well as of fiber produced by the method, are disclosed.

    摘要翻译： 生产光纤的根据本发明的方法包括生产棒状二氧化硅基体，与预先存在的基于二氧化硅的玻璃包覆的主体，并且从由此产生的预制件拉制纤维。 杆状主体包括芯部（10）和一个第一包层（11）那样围绕芯，这两个由...组成沉积玻璃的，并且还包括第二包层（例如，12）做了包围第一包层并没有源自 管基板那样具有折射率n2 <没有，石英玻璃的折射率。 外包（E. G.，13）包括预先存在的玻璃，并且包括第三包层区域确实具有折射率n3

    Schmalbandiger Lasersender
    47.
    发明公开
    Schmalbandiger Lasersender 失效
    窄带激光发射器。

    公开(公告)号：EP0182033A2

    公开(公告)日：1986-05-28

    申请号：EP85111822.4

    申请日：1985-09-18

    申请人： SIEMENS AKTIENGESELLSCHAFT

    发明人： Auracher, Franz, Dr. Dipl.-Ing. ,  Schneider, Hartmut, Dr. Dipl.-Chem. ,  Böck, Georg, Dr. Dipl.-Ing.

    IPC分类号： H01S3/08 ,  G02B6/16 ,  G02B6/26 ,  G02B6/42

    CPC分类号： G02B6/03644 ,  C03B37/01205 ,  C03B2203/22 ,  C03B2203/32 ,  G02B6/02047 ,  G02B6/03605 ,  G02B6/2821 ,  G02B6/2843 ,  G02B6/421 ,  G02B2006/2839 ,  H01S3/1062 ,  H01S5/141

    摘要： Es wird ein schmalbandiger Lasersender aus einem Haibleiterlaser und aus einem daran angekoppelten externen optischen Resonator zur Erzeugung sehr schmaler Linienbreiten beschrieben, bei dem zur Schaffung eines für den praktischen Einsatz geeigneten, raumsparenden und insbesondere stabilen schmalbandigen Lasersenders der externe optische Resonator aus einem wellenlängenselektiven Faserrichtkoppier in Form einer Doppelkernfaser besteht, deren Kerne unterschiedliche Brechzahlsprünge zu ihrer jeweiligen Umgebung und unterschiedliche Querschnitte haben. Weitere bevorzugte und vorteilhafte Ausgestaltungen des schmalbandigen Lasersenders werden beschrieben.

    摘要翻译： 有窄带激光发射器由半导体激光器（1）和从一个与之耦合的外部光谐振器描述产生很窄的线宽，其中，所述创建一个适合于实际使用，并且外部光谐振器的更特别稳定窄带激光发射器是由一个节省空间的波长选择性的 Faserrichtkoppler（4）是在双芯光纤的形式，芯具有不同的折射率跳跃到它们各自的环境和不同的横截面。 窄带激光发射器的进一步优选的和有利的特征进行了描述。

    OPTICAL FIBER ASSEMBLY WITH BEAM SHAPING COMPONENT
    50.
    发明公开
    OPTICAL FIBER ASSEMBLY WITH BEAM SHAPING COMPONENT 审中-公开
    带光束成形元件的光纤组件

    公开(公告)号：EP3210063A1

    公开(公告)日：2017-08-30

    申请号：EP14904278.0

    申请日：2014-10-23

    申请人： Coractive High-Tech Inc.

    发明人： MORASSE, Bertrand ,  BELHAJ, Nezih

    IPC分类号： G02B6/10 ,  G02B27/09 ,  G02B6/028

    CPC分类号： G02B6/262 ,  G02B6/0288 ,  G02B6/03605 ,  G02B6/03611 ,  G02B6/14 ,  G02B27/0994

    摘要： An optical fiber assembly is provided including an optical fiber and a beam shaping component affixed to an extremity of the optical fiber. The optical fiber supports a guided mode having a spatial profile defining a first shape. The beam shaping component defines a light path and has a transversal refractive index profile including an outer refractive index value greater than an inner refractive index value. The beam shaping component transforms the spatial profile of a light beam propagating along the light path between the first shape and a second shape different from the first shape. The optical assembly may for example transform a Gaussian light beam into a flat-top or donut shape.

    摘要翻译： 提供了一种光纤组件，其包括光纤和固定到光纤末端的光束成形部件。 光纤支持具有限定第一形状的空间轮廓的导模。 光束整形部件限定光路并且具有包括大于内部折射率值的外部折射率值的横向折射率分布。 光束整形部件将沿着光路在第一形状和不同于第一形状的第二形状之间传播的光束的空间轮廓转换。 光学组件可以例如将高斯光束变换成平顶或圆环形状。