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    Method of manufacturing polarization-maintaining optical fibers
    1.
    发明授权
    Method of manufacturing polarization-maintaining optical fibers 失效
    制造偏振维持光纤的方法

    公开(公告)号：US4859223A

    公开(公告)日：1989-08-22

    申请号：US141364

    申请日：1988-01-05

    申请人： Hiroshi Kajioka ,  Koudo Yamada ,  Yuuetsu Takuma ,  Tatsuo Teraoka

    发明人： Hiroshi Kajioka ,  Koudo Yamada ,  Yuuetsu Takuma ,  Tatsuo Teraoka

    IPC分类号： C03B37/014

    CPC分类号： C03B37/01466 ,  C03B37/01493 ,  C03B2203/22 ,  C03B2203/30

    摘要： Two opposite portions of the surface of a core rod whose section is circular are removed by machining in the longitudinal direction thereof, so that the section of the core rod is transformed into a non-circular shape. On the surface of the thusly shaped non-circular core rod, glass particulates are accumulated, and then the glass particulates accumulated on the core rod are sintered to create a preform. Then, the preform is heated and drawn, so that a polarization-maintaining optical fiber of non-circular section is obtained.

    摘要翻译： 通过在其纵向方向上的机械加工来除去截面为圆形的芯棒的表面的两个相对部分，使得芯棒的截面变成非圆形。 在如此形成的非圆形芯棒的表面上，玻璃颗粒被堆积，然后将堆积在芯棒上的玻璃微粒烧结以形成预制件。 然后，对预成型体进行加热拉拔，得到非圆形截面的偏振保持光纤。

    Method of producing elliptic core type polarization-maintaining optical fiber
    3.
    发明授权
    Method of producing elliptic core type polarization-maintaining optical fiber 失效
    椭圆型偏振保持光纤的制造方法

    公开(公告)号：US5482525A

    公开(公告)日：1996-01-09

    申请号：US068645

    申请日：1993-05-28

    申请人： Hiroshi Kajioka ,  Kohdo Yamada ,  Masashi Nakamura ,  Kazuya Murakami ,  Yuuetsu Takuma

    发明人： Hiroshi Kajioka ,  Kohdo Yamada ,  Masashi Nakamura ,  Kazuya Murakami ,  Yuuetsu Takuma

    IPC分类号： C03B37/012 ,  C03B37/014 ,  C03C13/04 ,  G02B6/10 ,  C03B37/023

    CPC分类号： C03B37/01217 ,  C03B37/01466 ,  C03B37/01493 ,  C03C13/04 ,  G02B6/105 ,  C03B2203/10 ,  C03B2203/12 ,  C03B2203/22 ,  C03B2203/30 ,  Y02P40/57

    摘要： A method of producing an elliptic core type polarization-maintaining optical fiber comprises the steps of providing a glass rod comprising a cladding glass layer around the periphery of a core glass layer, the cladding glass layer having a softening point higher than the softening point of the core glass layer, removing two side surface portions of the glass rod by machining along the axial direction of the glass rod to form a machined rod noncircular in cross section, outside depositing fine silica glass particles on the periphery of the machined rod, followed by sintering to provide a support glass layer having a softening point higher than the softening point of the cladding glass layer, and drawing the thus obtained glass rod body as an optical fiber preform. Since the portion for constituting the core of the optical fiber is formed by machining, the core is permitted to have a high ellipticity. An optical fiber with the desired size and birefringence index is obtained by regulating the conditions of production.

    摘要翻译： 一种制造椭圆型偏振保持光纤的方法包括以下步骤：在芯玻璃层的周围设置包括包层玻璃层的玻璃棒，所述包层玻璃层的软化点高于软化点 芯玻璃层，通过沿着玻璃棒的轴向的机械加工来除去玻璃棒的两个侧面部分，以形成横截面为非圆形的加工棒，在加工棒的周围沉积细二氧化硅玻璃颗粒，然后烧结 提供软化点高于包层玻璃层的软化点的支撑玻璃层，并且将由此获得的玻璃棒体拉制成光纤预制件。 由于通过机械加工形成用于构成光纤的芯的部分，所以允许芯具有高的椭圆率。 通过调节生产条件获得具有所需尺寸和双折射指数的光纤。