METHODS FOR FORMING OPTICAL FIBER PREFORMS WITH SELECTIVE DIFFUSION LAYERS
    51.
    发明申请
    METHODS FOR FORMING OPTICAL FIBER PREFORMS WITH SELECTIVE DIFFUSION LAYERS 审中-公开
    用选择性扩散层形成光纤预制件的方法

    公开(公告)号:US20140174133A1

    公开(公告)日:2014-06-26

    申请号:US14107259

    申请日:2013-12-16

    Abstract: Methods for forming optical fiber preforms are disclosed. According to one embodiment, a method for forming an optical fiber preform includes forming a preform core portion from silica-based glass soot. The silica-based glass soot may include at least one dopant species for altering an index of refraction of the preform core portion. A selective diffusion layer of silica-based glass soot may be formed around the preform core portion to form a soot preform. The selective diffusion layer may have an as-formed density greater than the density of the preform core portion. A diffusing species may be diffused through the selective diffusion layer into the preform core portion. The soot preform may be sintered such that the selective diffusion layer has a barrier density which is greater than the as-formed density and the selective diffusion layer prevents diffusion of the at least one dopant species through the selective diffusion layer.

    Abstract translation: 公开了形成光纤预制棒的方法。 根据一个实施例,用于形成光纤预制棒的方法包括从二氧化硅基玻璃烟炱形成预制芯部分。 二氧化硅基玻璃烟炱可以包括至少一种用于改变预制核心部分的折射率的掺杂物种类。 二氧化硅基玻璃烟炱的选择性扩散层可以在预制核心部分周围形成,以形成烟炱预制件。 选择性扩散层可以具有大于预制核心部分的密度的形成密度。 扩散物质可以通过选择性扩散层扩散到预制核心部分中。 烟炱预制件可以烧结,使得选择性扩散层具有大于形成密度的势垒密度,并且选择性扩散层防止至少一种掺杂剂物质通过选择性扩散层的扩散。

    Method of manufacturing an optical fiber preform having doped cladding
    58.
    发明授权
    Method of manufacturing an optical fiber preform having doped cladding 失效
    制造具有DOPED CLADDING的光纤预制件的方法

    公开(公告)号:US5090979A

    公开(公告)日:1992-02-25

    申请号:US561757

    申请日:1990-08-02

    Abstract: According to the present invention, a preform (7) for an optical fiber is made from a tube having a substrate layer (16) of fluorine-doped silica and a support layer (18) of non-doped silica. A cladding layer (8) of fluorine-doped silica and a core layer (10) of non-doped silica are formed on the inside surface of the tube by chemical vapor phase deposition. The optical fiber is subsequently obtained by collapsing the tube and drawing it. The invention is applicable to fabricating optical fibers.

    Abstract translation: 根据本发明,用于光纤的预成型件(7)由具有氟掺杂二氧化硅的衬底层(16)和非掺杂二氧化硅的支撑层(18)的管制成。 通过化学气相沉积在管的内表面上形成氟掺杂二氧化硅的包覆层(8)和非掺杂二氧化硅的芯层(10)。 随后通过塌缩管并将其拉伸来获得光纤。 本发明可应用于制造光纤。

    Forming optical fiber having abrupt index change
    59.
    发明授权
    Forming optical fiber having abrupt index change 失效
    形成具有突变指数变化的光纤

    公开(公告)号:US4810276A

    公开(公告)日:1989-03-07

    申请号:US81755

    申请日:1987-08-05

    Abstract: A method is disclosed for making a step-index optical fiber having a steep refractive index gradient between core and cladding. Core glass particles comprising a base glass and a refractive index-increasing dopant are deposited on a mandrel. The mandrel is removed and the resultant soot preform is consolidated to form a core preform having a dopant-poor surface region. The core glass preform is stretched and the hole therein is closed to form a core bait rod. Cladding glass soot is deposited on the core bait rod at a density which is at least 0.5 g/cc. This is accomplished by directing the flame from an auxiliary burner onto the core bait rod immediately prior to the deposition of cladding soot thereon. The resultant preform is consolidated and drawn into an optical fiber. In another embodiment, the etched core preform is overclad with a layer of cladding glass, and the composite preform is stretched prior to applying a second overclad layer.

    Method for producing glass preform for optical fiber
    60.
    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:US4765815A

    公开(公告)日:1988-08-23

    申请号:US88542

    申请日:1987-08-20

    Abstract: A method for producing a glass preform for an optical fiber by means at least two burners, comprising jetting a glass raw material containing SiCl.sub.4 from the first center burner and a hydrogen-containing silicon compound with larger reaction heat than SiCl.sub.4 from at least one second burner, flame hydrolyzing the glas raw material to synthesizing fine glass particles, depositing the fine glass particles on a starting member to form a porous soot preform and heating and sintering the soot preform to obtain a transparent glass preform, by which a large preform is stably produced and a bulk density of the preform is easily controlled.

    Abstract translation: 一种用于通过至少两个燃烧器制造用于光纤的玻璃预制棒的方法,包括从第一中心燃烧器喷射含有SiCl 4的玻璃原料和来自至少一个第二燃烧器的比SiCl4更大的反应热的含氢硅化合物 火焰水解玻璃原料以合成细微玻璃颗粒,在起始部件上沉积微细玻璃颗粒以形成多孔烟炱预制件,并加热和烧结烟炱预制件以获得透明玻璃预成型件,通过该玻璃预制件稳定地制造大型预制件 并且易于控制预成型体的体积密度。

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