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    Single-mode single-polarization optical fiber
    61.
    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。

    Method of forming laminated single polarization fiber
    62.
    发明授权
    Method of forming laminated single polarization fiber 失效
    层压单极化纤维的形成方法

    公开(公告)号：US4494969A

    公开(公告)日：1985-01-22

    申请号：US538326

    申请日：1983-10-03

    申请人： Venkata A. Bhagavatula

    发明人： Venkata A. Bhagavatula

    IPC分类号： G02B6/00 ,  C03B19/14 ,  C03B37/014 ,  C03B37/018 ,  G02B6/024 ,  C03B37/075 ,  G02B5/172

    CPC分类号： C03B37/01493 ,  C03B37/01473 ,  C03B2203/12 ,  C03B2203/22 ,  C03B2203/30

    摘要： A process for manufacturing a preform from which is drawn an optical fiber, the core of which comprises layers of different glass composition. Layers of glass soot are deposited on the flat, longitudinally extending sides of a thin, elongated mandrel. Adjacent soot coatings have different refractive indices. A preliminary coating of cladding glass soot is deposited on the laminated soot structure. The resultant composite body is consolidated and stretched to form a rod or core structure upon which the final coating of cladding soot is deposited. The resultant composite body is consolidated and drawn into an optical fiber. In a modification of the this method, the mandrel is removed after the planar soot coatings and preliminary coating of cladding soot are deposited thereon. The resultant soot body is consolidated and processed as described previously.

    摘要翻译： 一种用于制造预成型件的方法，其中拉出了一种光纤，其芯部包括不同玻璃组成的层。 玻璃烟灰层沉积在细长的心轴的平坦的纵向延伸的侧面上。 相邻的烟灰涂层具有不同的折射率。 包层玻璃烟灰的初步涂层沉积在层压烟灰结构上。 所得复合体被固结和拉伸以形成棒或芯结构，在其上沉积包覆烟灰的最终涂层。 将所得的复合体固结并拉入光纤。 在该方法的修改中，在平面烟灰涂层和包覆烟灰的初步涂覆沉积在其上之后，去除心轴。 如前所述，将所得烟灰体固结和加工。

    Single-polarization single-mode optical fiber
    64.
    发明授权
    Single-polarization single-mode optical fiber 失效
    单极化单模光纤

    公开(公告)号：US4480897A

    公开(公告)日：1984-11-06

    申请号：US388543

    申请日：1982-06-15

    申请人： Katsunari Okamoto ,  Toshihito Hosaka ,  Yutaka Sasaki ,  Juichi Noda ,  Takao Edahiro

    发明人： Katsunari Okamoto ,  Toshihito Hosaka ,  Yutaka Sasaki ,  Juichi Noda ,  Takao Edahiro

    IPC分类号： H01P3/16 ,  C03B37/012 ,  G02B6/024 ,  G02B6/10 ,  G02B5/172

    CPC分类号： G02B6/105 ,  G01L1/242

    摘要： A single-polarization single mode optical fiber of the type comprising an elliptical core, a pair of stress applying parts on both sides of the minor radius of the elliptical core for applying asymmetrical stress thereto and a clad embedding therein the core and the stress applying parts, the stress applying parts being made of B.sub.2 O.sub.3 wherein a relative refractive index difference .DELTA. between the core and the clad satisfies a relation 0.004.ltoreq..DELTA..ltoreq.0.05, an ellipticity .epsilon. satisfies a relation 0.01.ltoreq..epsilon..ltoreq.0.9, the B.sub.2 O.sub.3 has a molar concentration of 1 to 25 mole %, ratio of thickness of the stress applying parts and the core is 5 to 15, a modal birefringence B expressed by an equation B=(.beta..sub.x -.beta..sub.y)/k satisfies a relation B=1.times.10.sup.-6 where (.beta..sub.x -.beta..sub.y) represents a propagation constant difference between HE.sub.11.sup.x and HE.sub.11.sup.y modes, and k a wave number in vacuum, whereby a polarization mode dispersion, that is a delay time difference between the HE.sub.11.sup.x and HE.sub.11.sup.y modes which are orthogonal with each other is zero.

    摘要翻译： 一种单偏振单模光纤，其包括椭圆形芯，用于对其施加不对称应力的椭圆形芯的小半径两侧的一对应力施加部分，以及在其中嵌入芯的包层和应力施加部 应力施加部分由B 2 O 3制成，其中芯和包层之间的相对折射率差ΔTATA满足关系0.004≤ΔTA≤0.05，椭圆度ε满足关系式0.01 =ε= 0.9 ，B2O3的摩尔浓度为1〜25摩尔％，应力施加部和芯的厚度比为5〜15，由式B =（βx-βy）/ k表示的模态双折射B满足 关系B = 1×10 -6其中（βx-βy）表示HE11x和HE11y模式之间的传播常数差异，以及真空中的ka波数，由此偏振模色散是HE11x和HE11y之间的延迟时间差 模式whic h彼此正交为零。

    SINGLE-CORE POLARIZATION-MAINTAINING DISPERSION COMPENSATION MICRO-STRUCTURED OPTICAL FIBER
    69.
    发明公开
    SINGLE-CORE POLARIZATION-MAINTAINING DISPERSION COMPENSATION MICRO-STRUCTURED OPTICAL FIBER 审中-公开

    公开(公告)号：US20240019631A1

    公开(公告)日：2024-01-18

    申请号：US18476307

    申请日：2023-09-28

    申请人： Yanshan University

    发明人： Wei WANG ,  Xiaochen KANG ,  Chang ZHAO ,  Hongda YANG ,  Wenchao LI ,  Man YANG

    IPC分类号： G02B6/02 ,  G02B6/024

    CPC分类号： G02B6/02366 ,  G02B6/024

    摘要： A single-core polarization-maintaining dispersion compensation micro-structured optical fiber comprises a fiber core, a first layer of air holes surrounding the fiber core, the cladding defects on the x-axis, the cladding defects on the y-axis, and the cladding. The air holes in the fiber cross section are arranged in the equilateral triangle lattice. Three consecutive air holes are omitted to form a solid area. This solid area is the fiber core. There are two cladding defects along the x-axis. Their centers are respectively located at the two vertices of the hexagon on the x-axis, which is formed by the fourth air hole ring from the core exclusive the central air hole. Each cladding defect along the x-axis contains 7 air holes and goes through from the core by only 1 layer of air holes. There are also two cladding defects along the y-axis.