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12 条记录 (耗时 0.021 秒)

    Optical communications system comprising Raman amplification means
    1.
    发明授权
    Optical communications system comprising Raman amplification means 失效
    包括拉曼放大装置的光通信系统

    公开(公告)号：US4699452A

    公开(公告)日：1987-10-13

    申请号：US791915

    申请日：1985-10-28

    申请人： Linn F. Mollenauer ,  Rogers H. Stolen

    发明人： Linn F. Mollenauer ,  Rogers H. Stolen

    IPC分类号： H01S3/30 ,  H04B10/00 ,  H04B10/17 ,  H04B10/22 ,  G02B6/28

    CPC分类号： H04B10/2916

    摘要： An optical fiber communications system with Raman amplification of the signal radiation comprises a broadband pump radiation source, or, preferably a multiplicity of pump radiation sources. The sources are selected to result in a pump radiation spectrum such that pump radiation intensity in the fiber core is less than a critical intensity I.sub.c. In particular, the average intensity of pump radiation in a first spectral interval, centered on any wavelength .lambda..sub.p in the pump radiation spectrum and of width equal to the Brillouin line width of the fiber at .lambda..sub.p, is to be less than that average intensity in the first spectral interval that results in conversion of 10% of the radiation in the first spectral interval to stimulated Brillouin radiation. Use of a multiplicity of pump sources not only can reduce pump noise and pump depletion due to stimulated Brillouin scattering, but typically also can result in enhanced system reliability and lower cost. In a preferred embodiment, the invention is a soliton fiber communications system, with pump radiation injected at one or more intermediate fiber locations.

    摘要翻译： 具有信号辐射的拉曼放大的光纤通信系统包括宽带泵辐射源，或优选多个泵浦辐射源。 选择这些源以产生泵浦辐射光谱，使得光纤芯中的泵浦辐射强度小于临界强度Ic。 特别地，以泵浦辐射光谱中的任何波长λp为中心的第一光谱间隔中的泵浦辐射的平均强度和等于光纤在λp处的布里渊线宽度的宽度的平均强度应小于该平均强度 在导致第一光谱间隔中10％的辐射转换成受激布里渊辐射的第一光谱间隔中。 使用多个泵浦源不仅可以减少由于受激布里渊散射引起的泵浦噪声和泵耗竭，而且通常也可以导致系统可靠性提高和成本降低。 在优选实施例中，本发明是孤子光纤通信系统，其中泵浦辐射在一个或多个中间光纤位置处注入。

    Method of fabricating high birefringence fibers
    2.
    发明授权
    Method of fabricating high birefringence fibers 失效
    制造高双折射纤维的方法

    公开(公告)号：US4529426A

    公开(公告)日：1985-07-16

    申请号：US516000

    申请日：1983-07-22

    申请人： William Pleibel ,  Jay R. Simpson ,  Rogers H. Stolen

    发明人： William Pleibel ,  Jay R. Simpson ,  Rogers H. Stolen

    IPC分类号： G02B6/00 ,  C03B37/012 ,  C03C13/04 ,  G02B6/02 ,  G02B6/024 ,  G02B6/10 ,  C03B37/075

    CPC分类号： G02B6/105 ,  C03B37/01217 ,  C03B37/01225 ,  C03C13/04 ,  C03C13/045 ,  C03B2201/02 ,  C03B2201/10 ,  C03B2201/12 ,  C03B2201/31 ,  C03B2203/02 ,  C03B2203/04 ,  C03B2203/22 ,  C03B2203/30

    摘要： The present invention relates to a technique for producing polarization-preserving and single polarization optical fibers. As disclosed, high birefringence is introduced into the preform by deforming the fiber preform such that a cladding layer becomes flat and highly conformable, while the core remains hard and substantially round. In particular, a cladding layer with a relatively low melting point is utilized such that when the preform is heated the cladding becomes liquified while the core remains solid. The preform may then be deformed so that the cladding layer is substantially flattened. Standard drawing techniques may then be utilized to form polarization-preserving fibers and single polarization fibers from the preform.

    摘要翻译： 本发明涉及一种用于制造偏振光保护和单偏振光纤的技术。 如所公开的那样，通过使纤维预成型件变形使得包层变得平坦并高度贴合，同时核保持坚硬且基本上圆形，将高双折射率引入预成型体。 特别地，利用具有相对较低熔点的包覆层，使得当预制件被加热时，包层变得液化，同时核保持固体。 然后可以使预成型件变形，使得包层基本上变平。 然后可以利用标准绘制技术从预制件形成偏振保留纤维和单极化纤维。

    Exposed core optical fibers, and method of making same
    4.
    发明授权
    Exposed core optical fibers, and method of making same 失效
    裸露的核心光纤及其制造方法

    公开(公告)号：US4630890A

    公开(公告)日：1986-12-23

    申请号：US506594

    申请日：1983-06-22

    申请人： Arthur Ashkin ,  Rogers H. Stolen

    发明人： Arthur Ashkin ,  Rogers H. Stolen

    IPC分类号： C03B37/012 ,  C03B37/027 ,  G02B6/02 ,  G02B6/28 ,  G02B6/16

    CPC分类号： C03B37/02709 ,  C03B37/01205 ,  C03B37/027 ,  G02B6/02 ,  G02B6/2821 ,  C03B2203/02 ,  C03B2203/30 ,  C03B2203/31 ,  C03B2203/32

    摘要： The invention provides a method for making an optical fiber with a uniformly thin section of cladding. A preform having a core and at least one cladding layer is first made. The preform is prepared by cutting the preform so that the core is close to the surface of the preform. An optical fiber is pulled from the cut preform so the core is close to the surface of the optical fiber. The fiber may have cladding further removed by etching. A material selective etch may be used to make a protruding core fiber. Etching may be done on the preform before pulling the fiber.

    摘要翻译： 本发明提供一种制造具有均匀薄的包层的光纤的方法。 首先制造具有芯和至少一个包覆层的预制件。 预成型件通过切割预制件来制备，使得芯靠近预成型件的表面。 从切割的预成型件拉出光纤，使得芯靠近光纤的表面。 纤维可以通过蚀刻进一步去除包层。 可以使用材料选择性蚀刻来制造突出的芯纤维。 在拉伸纤维之前可以在预成型件上进行蚀刻。

    CORE SUCTION TECHNIQUE FOR THE FABRICATION OF OPTICAL FIBER PREFORMS
    5.
    发明申请
    CORE SUCTION TECHNIQUE FOR THE FABRICATION OF OPTICAL FIBER PREFORMS 审中-公开
    用于光纤预制件制造的核心吸收技术

    公开(公告)号：US20090193851A1

    公开(公告)日：2009-08-06

    申请号：US11382811

    申请日：2006-05-11

    申请人： Nitin Kumar Goel ,  Rogers H. Stolen ,  Steven H. Morgan ,  Daniel Kominsky

    发明人： Nitin Kumar Goel ,  Rogers H. Stolen ,  Steven H. Morgan ,  Daniel Kominsky

    IPC分类号： C03B37/027 ,  C03B37/03

    CPC分类号： C03B37/01268

    摘要： Optical fiber preforms which can be drawn into optical fibers of desired dimensions are fabricated by applying a vacuum to a cladding tube and drawing molten glass from a crucible into a bore of the cladding tube while a portion of the cladding tube is within a furnace preferably through a small hole in the top of the furnace. The method and apparatus are particularly applicable to highly non-linear fiber (HNLF) glasses and highly doped or rare earth glasses since materials therein are generally expensive and only a small quantity of molten glass is required but can be applied to virtually any optical fiber construction where the core glass has a lower melting or softening point than that of the cladding tube. Sources of contamination, breakage and other preform defects are substantially avoided and toxic substances, if present are readily confined.

    摘要翻译： 通过向包层管施加真空并将熔融玻璃从坩埚抽入包壳管的孔中，而包覆管的一部分优选地在炉内通过 炉顶部有一个小孔。 该方法和装置特别适用于高度非线性光纤（HNLF）玻璃和高掺杂或稀土玻璃，因为其中的材料通常是昂贵的，并且仅需要少量的熔融玻璃，而是可以应用于几乎任何的光纤结构 其中芯玻璃的熔点或软化点低于包层管的熔点或软化点。 基本上避免了污染源，破损和其他预制件缺陷的来源，如果存在有毒物质容易受限制。

    Single-mode single-polarization optical fiber
    6.
    发明授权
    Single-mode single-polarization optical fiber 失效
    单模单极化光纤

    公开(公告)号：US4515436A

    公开(公告)日：1985-05-07

    申请号：US464059

    申请日：1983-02-04

    申请人： Richard E. Howard ,  William Pleibel ,  Jay R. Simpson ,  Rogers H. Stolen

    发明人： Richard E. Howard ,  William Pleibel ,  Jay R. Simpson ,  Rogers H. Stolen

    IPC分类号： C03C3/04 ,  C03C13/04 ,  G02B6/024 ,  G02B6/10 ,  G02B6/28 ,  G02B5/14 ,  G02B5/172

    CPC分类号： G02B6/2804 ,  G02B6/105

    摘要： The present invention relates to a single-mode single-polarization optical fiber which is capable of functioning as an in-line fiber polarizer which allows only one polarization of the fundamental mode to propagate along the fiber. In structure, the fiber comprises a central core region (10) and a cladding region (12) which is substantially in contact with the central core region. The various regions are formed such that the refractive index of an outer cladding region is greater than the refractive index of an inner cladding region but less than that of the core region. The arrangement of the present invention produces stress-birefringence between the cladding regions and the central core region sufficient to split the two orthogonal polarizations (n.sub..parallel. and n.sub..perp.) of the fundamental mode such that the desired polarization propagates freely and the undesired polarization is attenuated by tunneling through the cladding layers.

    摘要翻译： 本发明涉及一种单模单偏振光纤，其能够用作线性光纤偏振器，其仅允许基模的一个偏振沿着光纤传播。 在结构上，纤维包括中心芯区域（10）和与中心芯区域基本上接触的包层区域（12）。 各个区域形成为使得外包层区域的折射率大于内包层区域的折射率，但小于核心区域的折射率。 本发明的布置在包层区域和中央核心区域之间产生足以分裂基模的两个正交极化（n PARALLEL和n ORTHOGONAL）的应力双折射，使得期望的偏振自由地传播并且不希望的极化被衰减 通过隧道穿过包覆层。

    Polarization-preserving optical fiber
    9.
    发明授权
    Polarization-preserving optical fiber 失效
    保偏光纤

    公开(公告)号：US4274854A

    公开(公告)日：1981-06-23

    申请号：US91699

    申请日：1979-11-06

    申请人： William Pleibel ,  Rogers H. Stolen

    发明人： William Pleibel ,  Rogers H. Stolen

    IPC分类号： C03B37/012 ,  C03B37/018 ,  G02B6/10 ,  C03B37/00 ,  C03C25/02

    CPC分类号： C03B37/01205 ,  C03B37/01861 ,  C03B37/01892 ,  G02B6/105 ,  C03B2203/02 ,  C03B2203/04 ,  C03B2203/30

    摘要： A method of making a polarization-preserving optical fiber is disclosed having a first step of fabricating a substrate tube to have a wall of nonuniform thickness, the nonuniformity in thickness being arranged about the wall of the substrate tube so that maxima and minima in wall thickness lie in planes which are substantially orthogonal. This first step is followed by deposition of cladding layers and a core layer within the substrate tube. The substrate is then collapsed and the fiber drawn therefrom. The nonuniform wall thickness of the substrate tube operates together with differential thermal contraction of the layers to produce stress-induced birefringence in the fiber, which birefringence provides a polarization-preserving optical fiber.

    摘要翻译： 公开了一种制造偏振保留光纤的方法，其具有制造基板管以使其具有不均匀厚度的壁的第一步骤，其厚度不均匀性围绕基板管的壁布置，使得最大和最小的壁厚 位于基本正交的平面中。 该第一步骤之后是在衬底管内沉积包覆层和芯层。 然后将基底压扁并从其中拉出纤维。 衬底管的不均匀壁厚与层的不同热收缩一起操作，以在纤维中产生应力诱导的双折射，双折射提供了保偏的光纤。