Method of forming an elongated glass article
    1.
    发明公开
    Method of forming an elongated glass article 失效
    Verfahren zur Herstellung eineslänglichenGlaskörpers

    公开(公告)号:EP0738691A3

    公开(公告)日:1997-03-19

    申请号:EP96201417.1

    申请日:1991-09-11

    摘要: A method is provided of forming an elongated glass article, comprising providing a tubular glass handle having a mandrel protruding from one end thereof, rotating the combination of mandrel and tube, and directing toward the rotating mandrel and an end portion of the tube a stream of glass particles comprising SiO 2 doped with at least 15 wt. % B 2 O 3 while reciprocating said mandrel and tube with respect to said stream to build up a porous glass coating. The mandrel is then removed from the porous glass coating and tube to form an assembly of handle and tubular porous preform. The porous preform is heated to consolidate it to a dense glass preform having an axial aperture, and to fuse the dense glass preform to the handle. NF 3 is flowed through the aperture while maintaining the temperature of the consolidated preform above 600°C but below that temperature which would cause the substantial elongation of the blank.

    摘要翻译: 公开了一种制造偏振保持单模光纤的方法。 纵向槽形成在具有由包层玻璃包围的玻璃芯的圆柱形芯预制件的相对侧上。 将芯预制件插入玻璃管中,将管收缩到芯预制件上,并将芯预制件和管之间的界面熔合以形成在芯的相对侧上具有纵向孔的实心预制件。 蚀刻剂气体流过孔径,以将孔径扩大为具有基本圆形横截面的孔。 插入到每个孔中的是由玻璃形成的应力杆,其膨胀系数与包层玻璃的膨胀系数不同。 拉制所得到的拉丝坯以形成具有经受应力诱导双折射的芯的单模光纤。

    Method of making polarization retaining fiber
    5.
    发明公开
    Method of making polarization retaining fiber 失效
    韦尔法罕zur Herstellung einer polarisationserhaltenden Faser

    公开(公告)号:EP0732309A2

    公开(公告)日:1996-09-18

    申请号:EP96201416.3

    申请日:1991-09-11

    IPC分类号: C03B37/012

    摘要: A method is described which comprises providing a preform having a glass core surrounded by cladding glass, a pair of longitudinal apertures on opposite sides of the core, and inserting into each of the apertures a stress rod of glass having a coefficient of expansion different from that of the cladding glass, thereby forming a draw blank. The space between said stress rods and the surface of the cladding glass that forms the apertures is then evacuated, and each of the stress rods is fused to the surface of the aperture into which it has been inserted. The resultant blank is drawn to form an optical fiber.

    摘要翻译: 描述了一种方法,其包括提供具有由包层玻璃围绕的玻璃核心的预成型件,在所述芯部的相对侧上的一对纵向孔,以及将具有不同于其的膨胀系数的玻璃应力棒插入每个孔中 的包层玻璃,从而形成拉丝坯。 然后将所述应力棒与形成孔的包层玻璃的表面之间的空间抽真空,并将每个应力棒熔合到其已插入孔的表面上。 所得到的坯料被拉制以形成光纤。

    Method of making polarization retaining fiber
    9.
    发明公开
    Method of making polarization retaining fiber 失效
    韦尔法罕zur Herstellung einer polarisationserhaltenden Faser

    公开(公告)号:EP0732309A3

    公开(公告)日:1997-03-26

    申请号:EP96201416.3

    申请日:1991-09-11

    IPC分类号: C03B37/012

    摘要: A method is described which comprises providing a preform having a glass core surrounded by cladding glass, a pair of longitudinal apertures on opposite sides of the core, and inserting into each of the apertures a stress rod of glass having a coefficient of expansion different from that of the cladding glass, thereby forming a draw blank. The space between said stress rods and the surface of the cladding glass that forms the apertures is then evacuated, and each of the stress rods is fused to the surface of the aperture into which it has been inserted. The resultant blank is drawn to form an optical fiber.

    摘要翻译: 公开了一种制造偏振保持单模光纤的方法。 纵向槽形成在具有由包层玻璃包围的玻璃芯的圆柱形芯预制件的相对侧上。 将芯预制件插入玻璃管中,将管收缩到芯预制件上,并将芯预制件和管之间的界面熔合以形成在芯的相对侧上具有纵向孔的实心预制件。 蚀刻剂气体流过孔径,以将孔径扩大为具有基本圆形横截面的孔。 插入到每个孔中的是由玻璃形成的应力杆,其膨胀系数与包层玻璃的膨胀系数不同。 拉制所得到的拉丝坯以形成具有经受应力诱导双折射的芯的单模光纤。