Method for the manufacture of a light wave guide
    312.
    发明授权
    Method for the manufacture of a light wave guide 失效
    光波导制造方法

    公开(公告)号:US4859222A

    公开(公告)日:1989-08-22

    申请号:US255106

    申请日:1988-10-07

    Abstract: A method for the manufacture of a light wave guide providing a cladding and a light conducting core, from a glass tube, showing a material on or below its inner surface which forms the core of the finished light wave guide comprising at least one substance which is diffused out selectively of this material, forming the core subsequently, into the interior space of the glass tube, whereby during the diffusing-out process the partial pressure of the diffusing-out substance in the interior space of the glass tube is maintained as small as possible, whereby a premature collapsing of the glass tube during the diffusion process is prevented by adjusting an overpressure in the glass tube, that the glass tube after the diffusing out process is largely collapsed by rinsing with a rinsing gas and in a last collapsing step is completely collapsed to a rod (perform) without rinsing with a rinsing gas and that the rod is subsequently drawn out to a fiber.

    Abstract translation: 一种用于制造光波导的方法,该光波导从玻璃管提供包层和导光核心,该玻璃管在其内表面上或下方形成材料,该材料形成完成的光波导的核心,其包括至少一种物质, 这种材料的选择性扩散,随后形成芯体到玻璃管的内部空间中,由此在扩散过程中,玻璃管内部空间中扩散物质的分压保持为小至 可以通过调节玻璃管中的超压来防止玻璃管在扩散过程中的过早崩溃,扩散过程中的玻璃管通过用漂洗气体漂洗而大大崩溃,并且在最后的折叠步骤中是 完全塌陷到杆(执行)而不用冲洗气体冲洗,并且随后将杆拉出到纤维中。

    Method for producing glass preform for optical fiber
    313.
    发明授权
    Method for producing glass preform for optical fiber 失效
    光纤玻璃预制棒的制造方法

    公开(公告)号:US4846867A

    公开(公告)日:1989-07-11

    申请号:US170082

    申请日:1988-03-11

    Abstract: A method for producing a glass preform for use in the fabrication of an optical fiber which comprises inserting a core rod made of quartz glass in a cladding tube made of quartz glass added with fluorine, heating them from the outside of the cladding tube to fuse them together to form a primary glass preform comprising a core rod and a first cladding layer around the core rod, depositing SiO.sub.2 soot particles around the primary glass preform and thermally treating the soot deposited glass preform in the presence of a fluorine-containing compound to form a final glass preform from which an optical fiber is fabricated. From the glass preform produced by this method, an optical fiber having low attenuation of light transmission in a wide range of wave-length is fabricated.

    Abstract translation: 一种制造用于制造光纤的玻璃预成型件的方法,包括将由石英玻璃制成的芯棒插入由添加有氟的石英玻璃制成的包层管中,从包层管的外部加热它们以将它们熔合 一起形成主芯玻璃预制件,其中包括芯棒和围绕芯棒的第一包覆层,在主玻璃预制件周围沉积SiO 2烟灰颗粒,并在含氟化合物的存在下热处理烟灰沉积的玻璃预制件以形成 制造光纤的最终玻璃预成型件。 从通过该方法制造的玻璃预制件中,制造在宽波长范围内具有低透光衰减的光纤。

    Method of fabricating high birefringence fibers
    315.
    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

    Abstract: 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.

    Abstract translation: 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。

    Method of making a soot preform compositional profile
    317.
    发明授权
    Method of making a soot preform compositional profile 失效
    制作烟炱预制件成型轮廓的方法

    公开(公告)号:US4298365A

    公开(公告)日:1981-11-03

    申请号:US165652

    申请日:1980-07-03

    Abstract: A method of making solid glass articles by the flame hydrolysis technique. A thin stratum of low viscosity glass soot is applied to the surface of a mandrel. First and second coatings of glass soot are deposited on the surface of the thin stratum to form a porous preform. The refractive index of the soot particles of the first coating is greater than that of the soot of the second coating, and the soot of the first coating has a viscosity lower than that of the second coating. The mandrel is removed, and the soot preform is subjected to a high temperature whereby it is consolidated to form a dense glass blank. The glass surface tension and the relative viscosities of the inner and outer portions of the preform cause the aperture to close during the consolidation process. The thin stratum, which preferably includes P.sub.2 O.sub.5, smoothes over the damage caused by removing the mandrel and reduces or even eliminates seed formation at the axis of the resultant glass blank. The blank may be heated and drawn into a filament, or it may be sliced into optical windows, lenses or the like.

    Abstract translation: 通过火焰水解技术制备固体玻璃制品的方法。 将低粘度玻璃烟灰的薄层施加到心轴的表面。 玻璃烟灰的第一和第二涂层沉积在薄层的表面上以形成多孔预型体。 第一涂层的烟灰颗粒的折射率大于第二涂层的烟灰的折射率,第一涂层的烟灰的粘度低于第二涂层的烟灰。 去除心轴,并且将烟灰预制件经受高温,由此将其固结以形成致密的玻璃坯料。 预成型件的内部和外部的玻璃表面张力和相对粘度在固结过程中导致孔隙闭合。 优选地包括P2O5的薄层平滑了由去除心轴引起的损伤,并减少或甚至消除了在所得玻璃坯料的轴线处的种子形成。 坯料可以被加热并拉成长丝,或者可以将其切成光学窗口,透镜等。

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