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公开(公告)号:US20050284184A1
公开(公告)日:2005-12-29
申请号:US10880205
申请日:2004-06-29
申请人: Grant Baynham , Paul Glodis , Robert Lingle
发明人: Grant Baynham , Paul Glodis , Robert Lingle
IPC分类号: C03B37/012 , C03B37/014 , C03B37/018
CPC分类号: C03B37/01413 , C03B37/01211 , C03B37/01473 , C03B37/01807 , C03B2201/31 , C03B2203/22 , Y02P40/57
摘要: The specification describes a method for addressing defects in the center of the core of an optical fiber that are formed during high temperature steps associated with collapsing a hollow core fabricated by the MCVD, PCVD, or OVD methods. These defects form absorption centers and impair the optical transmission properties of the optical fiber. The defects are reduced or eliminated according to the invention by forming a buffer layer as the last deposited layer before collapse. The buffer layer is undoped, or lightly doped, and provides a diffusion barrier to prevent or slow a change in the oxide glass stoichiometry. The result is that fewer dopant and oxygen atoms exit from the core layers through the free surface during collapse, resulting in fewer defects and lower fiber attenuation.
摘要翻译: 本说明书描述了一种用于解决在与通过MCVD,PCVD或OVD方法制造的中空芯片相关联的高温步骤期间形成的光纤芯的中心处的缺陷的方法。 这些缺陷形成吸收中心并损害光纤的光传输性能。 通过在崩溃之前形成缓冲层作为最后的沉积层,根据本发明减少或消除缺陷。 缓冲层未掺杂或轻掺杂,并提供扩散阻挡层以防止或减缓氧化物玻璃化学计量的变化。 结果是在塌陷期间,较少的掺杂剂和氧原子通过自由表面从核心层离开,导致较少的缺陷和较低的纤维衰减。
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公开(公告)号:US20060213231A1
公开(公告)日:2006-09-28
申请号:US11444754
申请日:2006-05-31
申请人: Robert Atkins , James Fleming , Paul Glodis , Man Yan
发明人: Robert Atkins , James Fleming , Paul Glodis , Man Yan
IPC分类号: C03B37/028 , C03B37/018
CPC分类号: C03B37/01869 , C03B37/01211 , C03B37/01248 , C03B37/01861 , C03B2201/04 , C03B2203/22
摘要: The specification describes methods for the manufacture of very large optical fiber preforms wherein the core material is produced by MCVD. Previous limitations on preform size inherent in having the MCVD starting tube as part of the preform process are eliminated by removing the MCVD starting tube material from the collapsed MCVD rod by etching or mechanical grinding. Doped overcladding tubes are used to provide the outer segments of the refractive index profile thus making most effective use of the MCVD produced glass and allowing the production of significantly larger MCVD preforms than previously possible.
摘要翻译: 该说明书描述了用于制造非常大的光纤预制件的方法,其中芯材料通过MCVD制造。 通过蚀刻或机械研磨,通过从收缩的MCVD棒中除去MCVD起始管材料,从而消除了将MCVD起始管作为预制件工艺的一部分而固有的预制件尺寸的限制。 掺杂的外包管用于提供折射率分布的外部部分,从而最有效地利用MCVD生产的玻璃,并允许生产比之前可能的显着更大的MCVD预成型件。
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公开(公告)号:US20070125127A1
公开(公告)日:2007-06-07
申请号:US11672836
申请日:2007-02-08
申请人: James Fleming , Siu-Ping Hong , Paul Glodis , Thomas Miller , Zhi Zhou , David Kalish , Shunhe Xiong
发明人: James Fleming , Siu-Ping Hong , Paul Glodis , Thomas Miller , Zhi Zhou , David Kalish , Shunhe Xiong
IPC分类号: C03B37/07 , C03B37/018 , C03B37/01
CPC分类号: C03B37/01225 , C03B37/01228 , C03B37/01861 , C03B37/027 , C03B37/02745 , C03B2203/36 , C03B2205/40 , C03B2205/72
摘要: Methods for modifying preform core ovality during and subsequent to the formation of an optical fiber preform. After MCVD deposition forms the core rod, but prior to overcladding of the core rod, the code rod may be etched to change its ovality. In order to etch the core rod, the core rod may be mounted to lathe, rotated by at least two rotors, and subjected to a heat source. Additionally, one of the at least two rotors may be phase-shifted from another one of the at least two rotors after the core rod is mounted on the lathe.
摘要翻译: 在形成光纤预制件期间和之后修改预成型坯椭圆度的方法。 在MCVD沉积后形成芯棒,但是在芯棒的外包层之前,可以蚀刻编码棒以改变其椭圆度。 为了蚀刻芯棒,芯棒可以安装到车床上,旋转至少两个转子,并经受热源。 此外,在将芯棒安装在车床上之后,至少两个转子中的一个可以从至少两个转子中的另一个转向相移。
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