Dispersion compensating fiber with reduced splice loss and methods for making same
    97.
    发明申请
    Dispersion compensating fiber with reduced splice loss and methods for making same 有权
    具有降低接合损耗的色散补偿光纤及其制作方法

    公开(公告)号:US20020159735A1

    公开(公告)日:2002-10-31

    申请号:US09778413

    申请日:2001-02-07

    Abstract: A dispersion compensating fiber is described having a core and cladding. The cladding has a first cladding region surrounding the core, a second cladding region surrounding the first cladding layer, and a third cladding region surrounding the second cladding layer. The core, and the first, second, and third cladding regions are doped to create a refraction index profile characteristic of dispersion compensating fiber. A portion of the cladding is doped with phosphorus, thereby resulting in splice loss reduction.

    Abstract translation: 描述了具有芯和包层的色散补偿光纤。 包层具有围绕芯的第一包层区域,围绕第一包层的第二包层区域和围绕第二包层的第三包层区域。 将芯和第一,第二和第三包层区域掺杂以产生色散补偿光纤的折射率分布特性。 包层的一部分掺杂有磷,从而导致熔接损耗降低。

    Process for making rare earth doped optical fiber
    100.
    发明申请
    Process for making rare earth doped optical fiber 有权
    制造稀土掺杂光纤的工艺

    公开(公告)号:US20020124601A1

    公开(公告)日:2002-09-12

    申请号:US09800291

    申请日:2001-03-06

    Abstract: The present invention provides an improved process for making rare earth doped preforms and fibers by a combination of MCVD technique and solution doping method, said method comprising developing matched or depressed clad structure inside a silica glass substrate tube followed by deposition of unsintered particulate layer containing GeO2 and P2O5 for formation of the core and solution doping by soaking the porous soot layer into an alcoholic/aqueous solution of RE-salts containing co-dopants like AlCl3/Al(NO3)3 in definite proportion, controlling the porosity of the soot, dipping period, strength of the solution and the proportion of the codopants to achieve the desired RE ion concentration in the core and minimize the core clad boundary defects and followed by drying, oxidation, dehydration and sintering of the RE containing porous deposit and collapsing at a high temperature to produce the preform and overdladding with silica tubes of suitable dimensions and fiber drawing to produce fibers.

    Abstract translation: 本发明提供了一种通过MCVD技术和溶液掺杂方法的组合制备稀土掺杂预成型件和纤维的改进方法,所述方法包括在石英玻璃基板管内形成匹配或凹陷的包层结构,随后沉积含有GeO 2的未烧结颗粒层 和P2O5,用于通过将多孔烟灰层以一定比例浸入含有Al-Al 3+(NO 3)3的共掺杂剂的RE盐的醇/水溶液中形成核心和溶液掺杂,控制烟灰的孔隙率,浸渍 时间,溶液的强度和共混物的比例以实现芯中期望的RE离子浓度,并使芯包覆边界缺陷最小化,随后使含RE的多孔沉积物进行干燥,氧化,脱水和烧结并在高处塌陷 温度以产生预成型件并用适当尺寸的硅胶管和纤维拉伸过度生产 纤维。

Patent Agency Ranking