中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

749 records (took 0.023 seconds)

    Fused silica-based optical waveguide and method for its manufacture
    72.
    发明授权
    Fused silica-based optical waveguide and method for its manufacture 失效
    熔融二氧化硅基光波导及其制造方法

    公开(公告)号：US06975800B2

    公开(公告)日：2005-12-13

    申请号：US10312113

    申请日：2001-05-31

    Applicant: Wolfgang Dultz ,  Walter Heitmann ,  Karl-Friedrich Klein

    Inventor： Wolfgang Dultz ,  Walter Heitmann ,  Karl-Friedrich Klein

    IPC: G02B6/00 ,  C03B37/023 ,  C03B37/027 ,  C03C13/04 ,  G02B6/02

    CPC classification number: C03B37/027 ,  C03B37/023 ,  C03B2201/12 ,  C03B2201/31 ,  C03B2203/22 ,  C03C3/06 ,  C03C13/04 ,  G02B6/02 ,  G02B6/02276

    Abstract: The invention relates to an optical waveguide (optical fiber) based on quartz glass having reduced internal mechanical stresses. In prior art optical waveguides, the internal mechanical stresses are primarily due to the production process, namely due to the difference of the linear thermal coefficients of expansion of the core and sheathing material during the cooling of the fiber and due to the drawing itself. In an inventive optical waveguide, the difference of the linear thermal coefficients of expansion of the core and/or sheathing material is selected by means of an appropriate doping of the core and sheathing material. This selection is made so that the internal mechanical stresses, which are caused by the cooling during the production process, are significantly reduced or eliminated and/or they counteract the stresses caused by the drawing. The invention provides that all of tile internal stresses inside the optical waveguide are significantly reduced, minimized or eliminated with regard to those of prior art optical waveguides. The advantageous effects resulting therefrom include a lower attenuation and improved PMD values compared to prior art optical waveguides.

    Abstract translation: 本发明涉及一种基于具有降低的内部机械应力的石英玻璃的光波导（光纤）。 在现有技术的光波导中，内部机械应力主要是由于生产过程，即由于在纤维冷却期间芯和包层材料的线性热系数的差异，以及由于拉伸本身而导致的。 在本发明的光波导中，芯和/或护套材料的线性热膨胀系数的差异通过适当掺杂的芯和护套材料来选择。 进行这种选择，使得在生产过程中由冷却引起的内部机械应力被显着地减少或消除，和/或它们抵消由拉伸引起的应力。 本发明提供了与现有技术的光波导相比，光波导内的所有瓦内应力显着减小，最小化或消除。 与现有技术的光波导相比，由此产生的有益效果包括较低的衰减和改善的PMD值。

    Use of amorphous carbon film as a hardmask in the fabrication of optical waveguides
    75.
    发明申请
    Use of amorphous carbon film as a hardmask in the fabrication of optical waveguides 失效
    在制造光波导中使用无定形碳膜作为硬掩模

    公开(公告)号：US20050199013A1

    公开(公告)日：2005-09-15

    申请号：US10799147

    申请日：2004-03-12

    Applicant: Laurent Vandroux ,  Herve Monchoix

    Inventor： Laurent Vandroux ,  Herve Monchoix

    IPC: C03B37/018

    CPC classification number: C03B19/143 ,  C03B19/1469 ,  C03B2201/10 ,  C03B2201/24 ,  C03B2201/28 ,  C03B2201/31 ,  Y02P40/57

    Abstract: Methods are provided for forming optical devices, such as waveguides, with minimal defect formation. In one aspect, the invention provides a method for forming a waveguide structure on a substrate surface including forming a cladding layer on the substrate surface, forming a core layer on the cladding layer, depositing an amorphous carbon hardmask on the core layer, forming a patterned photoresist layer on the amorphous carbon hardmask, etching the amorphous carbon hardmask, and etching the core material.

    Abstract translation: 提供了用于形成具有最小缺陷形成的光学器件（例如波导）的方法。 一方面，本发明提供了一种在基板表面上形成波导结构的方法，包括在基板表面上形成包覆层，在包层上形成芯层，在芯层上沉积无定形碳硬掩模，形成图案化 无定形碳硬掩模上的光致抗蚀剂层，蚀刻无定形碳硬掩模，并蚀刻芯材。

    UV photosensitive melted glasses
    78.
    发明授权
    UV photosensitive melted glasses 有权
    UV光敏熔化眼镜

    公开(公告)号：US06828262B2

    公开(公告)日：2004-12-07

    申请号：US10186123

    申请日：2002-06-28

    Applicant: Nicholas F. Borrelli ,  George B. Hares ,  Charlene M. Smith

    Inventor： Nicholas F. Borrelli ,  George B. Hares ,  Charlene M. Smith

    IPC: C03C400

    CPC classification number: C03B19/02 ,  C03B32/00 ,  C03B2201/21 ,  C03B2201/31 ,  C03C3/064 ,  C03C3/091 ,  C03C4/0085 ,  C03C4/04 ,  C03C4/085 ,  C03C17/3411 ,  C03C23/00 ,  C03C23/002 ,  C03C2201/21 ,  C03C2203/54 ,  G02B6/02114 ,  G02B6/12007 ,  G02B6/124 ,  G02B6/125 ,  G02B2006/12147

    Abstract: The present invention relates generally to UV (ultraviolet) photosensitive bulk glass, and particularly to batch meltable alkali boro-alumino-silicate and germanosilicate glasses. The photosensitive bulk glass of the invention exhibits photosensitivity to UV wavelengths below 300 nm. The photosensitivity of the alkali boro-alumino-silicate and germanosilicate bulk glasses to UV wavelengths below 300 nm provide for the making of refractive index patterns in the glass. With a radiation source below 300 nm, such a laser, refractive index patterns are formed in the glass. The inventive photosensitive optical refractive index pattern forming bulk glass allows for the formation of patterns in glass and devices which utilize such patterned glass.

    Abstract translation: 本发明一般涉及UV（紫外线）感光体玻璃，特别涉及间歇可熔碱性硼硅酸铝硅酸盐和锗硅酸盐玻璃。 本发明的感光体玻璃显示对低于300nm的UV波长的光敏性。碱性硼硅酸铝硅酸盐和锗硅酸盐体玻璃对低于300nm的UV波长的光敏性提供了在玻璃中制备折射率图案。 在300nm以下的辐射源下，这种激光器在玻璃中形成折射率图案。 本发明的感光光学折射率图案形成块状玻璃允许在玻璃中形成图案并利用这种图案化玻璃的装置。

    Two step etching process for an optical fiber preform
    79.
    发明授权
    Two step etching process for an optical fiber preform 失效
    光纤预制棒的两步蚀刻工艺

    公开(公告)号：US06821449B2

    公开(公告)日：2004-11-23

    申请号：US10319044

    申请日：2002-12-12

    Applicant: Julie E. Caplen ,  Jean-Philippe J. deSandro ,  Joohyun Koh

    Inventor： Julie E. Caplen ,  Jean-Philippe J. deSandro ,  Joohyun Koh

    IPC: C03B3710

    CPC classification number: C03B37/01861 ,  C03B37/01466 ,  C03B2201/31 ,  C03C25/68 ,  Y02P40/57

    Abstract: This invention relates to a method of preparing an optical fiber preform with the preform having a uniform refractive index profile for the deposited oxide material that ultimately forms the optical fiber core. One embodiment of the invention relates to a process for preparing an optical fiber preform comprising the steps of etching a substrate a first time to remove a portion of a deposited oxide material from the preform by using a gas comprising an etchant gas containing fluorine at a sufficient temperature and gas concentration to create a fluorine contamination layer in the remaining deposited oxide material; and etching the preform a second time using a gas comprising an etchant gas containing fluorine at a sufficient temperature and gas concentration to remove the fluorine contamination layer without any substantial further fluorine contamination of the remaining deposited oxide material. Further embodiments relate to similar processes.

    Abstract translation: 本发明涉及一种制备光纤预型件的方法，其中预成型件对于最终形成光纤芯的沉积的氧化物材料具有均匀的折射率分布。 本发明的一个实施方案涉及一种制备光纤预制件的方法，其包括以下步骤：首先通过使用包含含氟的蚀刻剂气体的气体第一次蚀刻从预成型体中沉积的氧化物材料的一部分， 温度和气体浓度，以在剩余的沉积氧化物材料中产生氟污染层; 并且在足够的温度和气体浓度下使用包含含氟蚀刻剂气体的气体第二次蚀刻预成型件以除去氟污染层，而没有剩余的沉积氧化物材料的任何实质上的进一步的氟污染。 另外的实施例涉及类似的过程。

    PROCESS OF MAKING RARE EARTH DOPED OPTICAL FIBRE
    80.
    发明申请
    PROCESS OF MAKING RARE EARTH DOPED OPTICAL FIBRE 有权
    制造稀土光纤光纤的工艺

    公开(公告)号：US20040187524A1

    公开(公告)日：2004-09-30

    申请号：US09982946

    申请日：2001-10-22

    Applicant: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH

    Inventor： Ranjan Sen ,  Minati Chatterjee ,  Milan Kanti Naskar ,  Mrinmay Pal ,  Mukul Chandra Paul ,  Shyamal Kumar Bhadra ,  Kamal Dasgupta ,  Dibyendu Ganguli ,  Tarun Bandyopadhyay ,  Aharon Gedanken

    IPC: C03B037/075 ,  G02B006/00

    CPC classification number: B82Y30/00 ,  B82Y20/00 ,  C03B37/016 ,  C03B37/018 ,  C03B2201/12 ,  C03B2201/28 ,  C03B2201/31 ,  C03B2201/34 ,  C03B2201/36 ,  G02B6/02

    Abstract: The present invention discloses a process for making rare earth (RE) doped optical fibre by using RE oxide coated silica nanoparticles as the precursor materia, more particularly the method of the present invention involves preparation of stable dispersions (sol) of RE oxide coated silica nanoparticles at ambient temperature and applying a thin coating on the inner surface of silica glass tube following dip coating technique or any other conventional methods, of the said silica sol containing suitable dopants selected from Ge, Al, P, etc., the coated tubes were further processed into optical preforms by following MCVD technique and fiberised in desired configuration, the novelty lies in eliminating the step of the formation of porous soot layer at high temperature by CVD process inside a fused silica glass tube for formation of the core and also in the elemination of the incorporation of the rare earth ions into the porous soot layer following the solution doping technique or other conventional methods, the direct addition of RE oxides in the sol eliminates the formation of microcrystalites and clusters of rare earth ions and prevents change in composition including variation of RE concentration in the core which results in increase in the reproducibility and reliability of the process to a great extent, further the addition of Ge(OET)4 at ambient temperature in the silica sol reduces the quantity of GeCl4 which is required at high temperature to achieve the desired Numerical Aperture.

    Abstract translation: 本发明公开了一种通过使用RE氧化物涂覆的二氧化硅纳米颗粒作为前体材料制备稀土（RE）掺杂光纤的方法，更具体地说，本发明的方法包括制备RE氧化物涂覆的二氧化硅纳米粒子的稳定分散体（sol） 在环境温度下，在浸渍涂布技术或任何其它常规方法之后，在石英玻璃管的内表面上施加薄涂层，所述硅溶胶含有选自Ge，Al，P等的合适的掺杂剂，所述涂覆的管进一步 通过按照MCVD技术处理成光学预型件并在所需结构中纤维化，新颖性在于消除了在用于形成芯的熔融石英玻璃管内的CVD工艺在高温下形成多孔烟灰层的步骤，以及在电镀 根据溶液掺杂技术或其他配合将稀土离子掺入多孔烟灰层中 通常的方法中，在溶胶中直接添加RE氧化物消除了微晶体和稀土离子簇的形成，并且防止了组分中的变化，包括核心中RE浓度的变化，这导致过程的再现性和可靠性增加到 在很大程度上，进一步在硅溶胶中环境温度下添加Ge（OET）4会降低在高温下所需的GeCl 4的量以达到所需的数值孔径。

Patent Agency Ranking