Sol-gel-derived optical fiber preform and method of manufacture
    122.
    发明授权
    Sol-gel-derived optical fiber preform and method of manufacture 失效
    溶胶凝胶衍生的光纤预制棒及其制造方法

    公开(公告)号:US06928220B2

    公开(公告)日:2005-08-09

    申请号:US10062748

    申请日:2002-02-01

    Abstract: A method forms an optical fiber preform. The method includes forming a sol-gel-derived rod having a first diameter. Forming the sol-gel-derived rod includes preparing a sol-gel solution including at least 3 mole % of a catalyst. The sol-gel solution is allowed to undergo gelation to form a wet gel monolith. The wet gel monolith is dried and shrunk by exposing the wet gel monolith to a temporal temperature profile, thereby forming a xerogel monolith. The xerogel monolith is consolidated, thereby forming the sol-gel-derived rod. The method further includes drawing the sol-gel-derived rod to substantially reduce its diameter, thereby forming a drawn rod having a second diameter less than the first diameter.

    Abstract translation: 一种方法形成光纤预制件。 该方法包括形成具有第一直径的溶胶 - 凝胶衍生的棒。 形成溶胶 - 凝胶衍生的棒包括制备包含至少3摩尔%的催化剂的溶胶 - 凝胶溶液。 使溶胶 - 凝胶溶液进行凝胶化以形成湿凝胶整料。 通过将湿凝胶整料暴露于时间温度曲线,将湿凝胶整料干燥并收缩,从而形成干凝胶整料。 将干凝胶整料固结,从而形成溶胶 - 凝胶衍生的棒。 该方法还包括拉伸溶胶 - 凝胶衍生的棒以大大减小其直径,从而形成具有小于第一直径的第二直径的拉伸棒。

    Optical fiber preform, production method thereof, and optical fiber produced from the preform
    125.
    发明授权
    Optical fiber preform, production method thereof, and optical fiber produced from the preform 有权
    光纤预制棒,其制造方法以及由该预制棒制成的光纤

    公开(公告)号:US06836605B2

    公开(公告)日:2004-12-28

    申请号:US10291813

    申请日:2002-11-12

    Abstract: An optical fiber preform having a low core noncircularity and eccentricity for producing an optical fiber having an improved polarization mode dispersion, a method for producing the preform, and an optical fiber produced from the preform. The optical fiber preform is produced by the following steps. Diameter-reduced portions 11a and 11b are formed in the vicinity of the ends of the glass pipe 11. A glass rod 12 is inserted into the glass pipe 11. The glass rod 12 is fixed to the glass pipe 11 at the diameter-reduced portion 11a. The glass pipe 11 and the glass rod 12 are heat-unified from the diameter-reduced portion 11b forward to the diameter-reduced portion 11a. The optical fiber preform has a core noncircularity of at most 1.5%. The optical fiber has a polarization mode dispersion of at most 0.15 ps/km1/2 at a wavelength of 1,550 nm.

    Abstract translation: 一种具有低芯非圆度和偏心率的光纤预制件,用于制造具有改进的偏振模色散的光纤,由预成型件制造的预制棒的制造方法和光纤。 光纤预制棒通过以下步骤制造。 直径减小部分11a和11b形成在玻璃管11的端部附近。玻璃棒12插入到玻璃管11中。玻璃棒12在直径减小部分处固定到玻璃管11上 11a。 玻璃管11和玻璃棒12从直径减小部分11b向前加热到直径减小部分11a。 光纤预制棒的芯非圆度至多为1.5%。 该光纤在1,550nm的波长下具有至多0.15ps / km 1/2的偏振模色散。

    Making a photosensitive fiber with collapse of a MCVD tube that is in a small positive pressure atmosphere
    127.
    发明授权
    Making a photosensitive fiber with collapse of a MCVD tube that is in a small positive pressure atmosphere 失效
    制造感光纤维,其处于小正压气氛中的MCVD管的塌陷

    公开(公告)号:US06705123B2

    公开(公告)日:2004-03-16

    申请号:US09821474

    申请日:2001-03-30

    Abstract: The present invention includes a method of making a preform for an enhanced photosensitive fiber comprising depositing successive layers of optical material the inside a tube using modified chemical vapor deposition, and collapsing the layers of optical material in a reducing atmosphere with a positive pressure. The present invention also includes a method of making an enhanced photosensitive fiber comprising making a preform using modified chemical vapor deposition wherein the preform is collapsed in a reducing atmosphere with a positive pressure and drawing the preform into a fiber.

    Abstract translation: 本发明包括一种制备用于增强感光纤维的预成型体的方法,包括使用改进的化学气相沉积在管内部沉积连续的光学材料层,并在正压下还原气氛中折叠光学材料层。 本发明还包括一种制备增强感光纤维的方法,其包括使用改进的化学气相沉积法制备预成型体,其中预成型件在正压的还原气氛中塌陷并将预成型件拉伸成纤维。

    Light-amplifying optical fiber and method of making the same
    128.
    发明授权
    Light-amplifying optical fiber and method of making the same 有权
    光放大光纤及其制造方法

    公开(公告)号:US06687439B1

    公开(公告)日:2004-02-03

    申请号:US09674071

    申请日:2000-10-26

    Abstract: The present invention relates to a light-amplifying optical fiber comprising a structure for realizing a flat gain characteristic or oscillation characteristic in a wider wavelength band, and a method of making the same. The light-amplifying optical fiber according to the present invention comprises a second doped area containing a first doped area including an optical axis center and having a larger outer diameter than the first doped area. The second doped area is doped with at least one of Al2O3, P2O5, Y2O3, and B2O3 as an oxide of an element having a valence different from that of a cation constituting a main material of the light-amplifying optical fiber; whereas the first doped area is doped with at least one of Er, Nd, Tm, Yb, and Pr as a rare-earth element together with the oxide.

    Abstract translation: 本发明涉及一种包括用于实现更宽波长带中的平坦增益特性或振荡特性的结构的光放大光纤及其制造方法。根据本发明的光放大光纤包括: 第二掺杂区域包含包含光轴中心并且具有比第一掺杂区域更大的外径的第一掺杂区域。 掺杂有Al 2 O 3,P 2 O 5,Y 2 O 3和B 2 O 3中的至少一种作为与构成光放大光纤的主要材料的阳离子的价态不同的元素的氧化物的第2掺杂区域; 而第一掺杂区域与氧化物一起掺杂有Er,Nd,Tm,Yb和Pr中的至少一种作为稀土元素。

    Sol-gel-derived optical fiber preform and method of manufacture
    130.
    发明申请
    Sol-gel-derived optical fiber preform and method of manufacture 失效
    溶胶凝胶衍生的光纤预制棒及其制造方法

    公开(公告)号:US20030147605A1

    公开(公告)日:2003-08-07

    申请号:US10062748

    申请日:2002-02-01

    Abstract: A method forms an optical fiber preform. The method includes forming a sol-gel-derived rod having a first diameter. Forming the sol-gel-derived rod includes preparing a sol-gel solution including at least 3 mole % of a catalyst. The sol-gel solution is allowed to undergo gelation to form a wet gel monolith. The wet gel monolith is dried and shrunk by exposing the wet gel monolith to a temporal temperature profile, thereby forming a xerogel monolith. The xerogel monolith is consolidated, thereby forming the sol-gel-derived rod. The method further includes drawing the sol-gel-derived rod to substantially reduce its diameter, thereby forming a drawn rod having a second diameter less than the first diameter.

    Abstract translation: 一种方法形成光纤预制件。 该方法包括形成具有第一直径的溶胶 - 凝胶衍生的棒。 形成溶胶 - 凝胶衍生的棒包括制备包含至少3摩尔%的催化剂的溶胶 - 凝胶溶液。 使溶胶 - 凝胶溶液进行凝胶化以形成湿凝胶整料。 通过将湿凝胶整料暴露于时间温度曲线,将湿凝胶整料干燥并收缩,从而形成干凝胶整料。 将干凝胶整料固结,从而形成溶胶 - 凝胶衍生的棒。 该方法还包括拉伸溶胶 - 凝胶衍生的棒以大大减小其直径,由此形成具有小于第一直径的第二直径的拉伸杆。

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