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公开(公告)号：US4515436A
公开(公告)日：1985-05-07
申请号：US464059
申请日：1983-02-04
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。
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公开(公告)号：US4529426A
公开(公告)日：1985-07-16
申请号：US516000
申请日：1983-07-22
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。
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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。
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公开(公告)号：US4575187A
公开(公告)日：1986-03-11
申请号：US461965
申请日：1983-01-28
IPC分类号： C03B37/018 , C03C15/00 , G02B6/10 , C03B
CPC分类号： C03C15/00 , C03B37/018 , G02B6/02042 , G02B6/105 , C03B2203/30 , C03B2203/34 , C03C2218/355
摘要： Selected portions of the interior surface of a substrate tube, or of the cladding or core layers deposited on the interior surface of the substrate tube, are treated by one or more process steps such as shaping, diffusing, leaching, or depositing. Patterning processes such as photolithography and lift-off are employed to define the selected portions. The resulting core and/or cladding layers of the fiber can be made to have a variety of geometric shapes and composition profiles useful, for example, in realizing birefringent fibers and multiple-core fibers. Also described is the similar treating of metal layers and the incorporation of such layers into the fiber.
摘要翻译： 衬底管的内表面的选定部分或沉积在衬底管的内表面上的包层或芯层通过一个或多个工艺步骤如成形，扩散，浸出或沉积来处理。 使用诸如光刻和剥离的图案化处理来限定所选择的部分。 所得到的纤维的芯和/或包覆层可以制成具有各种几何形状和组成分布，例如可用于实现双折射纤维和多芯纤维。 还描述了金属层的类似处理以及这些层结合到纤维中。
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公开(公告)号：US4428761A
公开(公告)日：1984-01-31
申请号：US333433
申请日：1981-12-22
IPC分类号： G03B37/00 , C03B37/018 , C03C15/00 , G02B6/00 , G02B6/10 , C03B37/025 , C03B37/075
CPC分类号： C03C15/00 , C03B37/018 , G02B6/02042 , G02B6/105 , C03B2203/30 , C03B2203/34 , C03C2218/355
摘要： Selected portions of the interior surface of a substrate tube, or of the cladding or core layers deposited on the interior surface of the substrate tube, are treated by one or more process steps such as shaping, diffusing, leaching, or depositing. Patterning processes such as photolithography and lift-off are employed to define the selected portions. The resulting core and/or cladding layers of the fiber can be made to have a variety of geometric shapes and composition profiles useful, for example, in realizing birefringent fibers and multiple-core fibers. Also described is the similar treating of metal layers and the incorporation of such layers into the fiber.
摘要翻译： 衬底管的内表面的选定部分或沉积在衬底管的内表面上的包层或芯层通过一个或多个工艺步骤如成形，扩散，浸出或沉积来处理。 使用诸如光刻和剥离的图案化处理来限定所选择的部分。 所得到的纤维的芯和/或包覆层可以制成具有各种几何形状和组成分布，例如可用于实现双折射纤维和多芯纤维。 还描述了金属层的类似处理以及这些层结合到纤维中。
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