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    NEAR-ULTRAVIOLET FORMATION OF REFRACTIVE-INDEX GRATING USING PHASE MASK
    6.
    发明公开
    NEAR-ULTRAVIOLET FORMATION OF REFRACTIVE-INDEX GRATING USING PHASE MASK 失效
    NAH-UV ERZEUGUNG VON BRECHZAHLAHITTER MIT PHASENMASKE

    公开(公告)号：EP0996862A4

    公开(公告)日：2000-05-03

    申请号：EP97954302

    申请日：1997-12-30

    申请人： STAR TECHNOLOGIES INC D

    发明人： STARODUBOV DMITRY S ,  FEINBERG JACK L

    IPC分类号： G02B6/34 ,  G03C5/16 ,  G03F9/00 ,  G02B6/16

    CPC分类号： G02B6/02138 ,  G02B6/02185 ,  G02B2006/02161

    摘要： A grating (12) is induced in the core (14) of a hydrogen-loaded high-germanium-content optical fiber (10) using near-UV (275 nm-390 nm) laser light (40). An interference pattern is generated at the core (14) using a molded polymer phase mask (30) with a square wave surface relief pattern (34). The light (40) is directed through the phase mask (30), through a protective fiber coating (18), through the cladding (16), and into the core (14). The phase mask (30) generates an interference pattern with a period half that of the surface relief pattern (34). Index of refraction changes occur at the bright fringes of the interference pattern, thus creating the grating. Advantages over existing mid-UV technology include lower fabrication costs for phase masks, simplified grating induction since fiber coatings do not need to be removed, and reduced infrared absorption caused by grating formation in the fiber.

    摘要翻译： 使用近紫外（275nm-390nm）激光（40）在含氢高锗含量光纤（10）的芯（14）中感应光栅（12）。 使用具有方波表面浮雕图案（34）的模制聚合物相位掩模（30）在芯（14）处产生干涉图案。 光（40）被引导通过相位掩模（30），穿过保护性纤维涂层（18），穿过包层（16）并进入芯部（14）。 相位掩模（30）产生具有表面起伏图案（34）的一半的周期的干涉图案。 折射率变化发生在干涉图案的明亮边缘，从而产生光栅。 相对于现有的中UV技术的优势包括相位掩膜的制造成本更低，由于不需要去除光纤涂层，所以简化了光栅感应，并且减少了光纤中光栅形成所引起的红外吸收。

    Method of making an optical fiber grating, and article made by the method
    8.
    发明公开
    Method of making an optical fiber grating, and article made by the method 失效
    一种用于通过该处理装置，一种制造光纤光栅和制造过程

    公开(公告)号：EP0836102A2

    公开(公告)日：1998-04-15

    申请号：EP97307669.8

    申请日：1997-09-30

    申请人： LUCENT TECHNOLOGIES INC.

    发明人： Atkins, Robert Michael ,  Simoff, Debra Ann ,  Espindola, Rolando Patricio

    IPC分类号： G02B6/16

    CPC分类号： G02B6/02138 ,  G02B6/02114 ,  G02B6/02152 ,  G02B2006/02161

    摘要： The method of making an optical fiber refractive index grating comprises writing the grating through the fiber coating. The method involves providing optical fiber of significantly higher photosensitivity than conventional fiber, such that the grating can be written before unacceptable darkening of the coating occurs. Such fiber is H 2 and/or D 2 -loaded silica-based fiber having a Ge-doped core, the fiber selected to have a germanium-oxygen deficiency center content that provides the fiber with a photosensitivity that is at least twice as large as that of an otherwise identical, conventionally prepared, optical fiber. The fiber typically is drawn from a preform, at least a portion of which was exposed to a reducing atmosphere at an elevated temperature.

    摘要翻译： 光纤折射率光栅包括通过光纤涂层写入光栅的制造的方法。 该方法包括提供显着更高的光敏性光纤比传统纤维，检查做的光栅可以在发生涂层的不可接受的颜色变深之前被写入。 搜索纤维是H 2和/或D 2加载的具有掺Ge的芯二氧化硅基纤维，所选择的纤维为具有锗氧缺乏中心内容确实提供一个具有感光性的纤维做是至少两倍那样的大 在其它方面相同的，常规制备的，光纤。 该纤维是从预成型坯通常情况下，至少其一部分在高温下暴露于还原气氛中绘制。

    AUTOMATED SYSTEM FOR TRANS-JACKET FIBER BRAGG GRATING INSCRIPTION AND MANUFACTURING
    9.
    发明公开
    AUTOMATED SYSTEM FOR TRANS-JACKET FIBER BRAGG GRATING INSCRIPTION AND MANUFACTURING 审中-公开
    自动系统用于反式夹克光纤光栅说明和制造

    公开(公告)号：EP3290971A1

    公开(公告)日：2018-03-07

    申请号：EP17189135.1

    申请日：2017-09-01

    申请人： National Research Council of Canada

    发明人： MIHAILOV, Stephen ,  GROBNIC, Dan ,  LAUSTEN, Rune ,  WALKER, Robert ,  LU, Ping ,  DING, Huimin ,  COULAS, David ,  HNATOVSKY, Cyril

    IPC分类号： G02B6/02

    CPC分类号： G02B6/02138 ,  G02B5/1857 ,  G02B6/021 ,  G02B6/02128 ,  G02B6/262 ,  G02B6/4219 ,  G02B2006/02161

    摘要： There is provided an alignment system and method for use in an ultrashort pulse duration laser-based Fiber Bragg Grating (FBG) writing system, the alignment system comprising: clamps configured to hold a coated optical fiber in a position perpendicular to a beam path of an ultrashort pulse duration laser-based FBG writing station; an optical detector; and a control system with an input from the optical detector and an output to adjust parameters of an optical source and the FBG writing station adjust a distance between the optical fiber and an optical source of the writing station based on luminescence generated in a core of the optical fiber as indicated in a signal received at the input from the optical detector.

    摘要翻译： 提供了用于基于超短脉冲持续时间激光器的光纤布拉格光栅（FBG）写入系统中的对准系统和方法，所述对准系统包括：夹具，其被配置为将涂覆光纤保持在垂直于 超短脉冲持续时间基于激光的FBG写入站; 一个光学检测器; 以及具有来自所述光学检测器的输入和用于调整光源的参数的输出的控制系统，并且所述FBG写入站基于所述光纤的芯部中产生的发光来调整所述光纤和所述写入站的光源之间的距离 光纤，如在来自光学检测器的输入处接收到的信号中所指示的。