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    Rare earth element-doped multiple-core optical fiber and method for fabricating the same
    111.
    发明授权
    Rare earth element-doped multiple-core optical fiber and method for fabricating the same 失效
    稀土元素掺杂多芯光纤及其制造方法

    公开(公告)号：US5712941A

    公开(公告)日：1998-01-27

    申请号：US658074

    申请日：1996-06-04

    Applicant: Katsuyuki Imoto ,  Kazuo Koya ,  Jun Abe

    Inventor： Katsuyuki Imoto ,  Kazuo Koya ,  Jun Abe

    IPC: C03B37/012 ,  C03B37/014 ,  C03C13/04 ,  G02B6/00 ,  G02B6/02 ,  G02B6/036 ,  G02B6/04 ,  G02F1/35 ,  H01S3/06 ,  H01S3/067 ,  H01S3/07 ,  H01S3/17

    CPC classification number: G02B6/03694 ,  C03B37/01222 ,  C03B37/01262 ,  C03B37/01433 ,  C03C13/045 ,  G02B6/03627 ,  G02B6/04 ,  H01S3/06708 ,  C03B2201/36 ,  C03B2203/22 ,  C03B2203/34 ,  C03C2201/36 ,  G02B6/02042 ,  G02B6/0281 ,  H01S3/06729

    Abstract: A rare earth element-doped multiple-core optical fiber has an outer cladding layer and a plurality of cores each covered with a primary cladding layer. The cores are positioned substantially on a central axis of the outer cladding layer and separated with a predetermined spacing S from each other by the primary cladding layer. The outer cladding layers are made of SiO.sub.2, or SiO.sub.2 added with a dopant like F, Ge, etc. The primary cladding layer is made of SiO.sub.2 doped with Er, or SiO.sub.2 doped with Er and F together and formed to have a predetermined thickness of 1.0 .mu.m.about.1.5 .mu.m to form the predetermined spacing S. The Soot glass rods for cores and primary cladding layers are immersed in an Er-compound solution, then picked up, dried and consolidated to form Er--Al co-doped SiO.sub.2 --GeO.sub.2 transparent glass rods. The glass rods are inserted into a quartz tube and collapsed by heat to fabricate an optical fiber preform rod, then heated to be drawn to provide an Er-doped multiple-core optical fiber.

    Abstract translation: 稀土元素掺杂多芯光纤具有外包层和多个芯，其各自覆盖有初级包覆层。 芯基本上位于外包层的中心轴线上，并以预定间隔S彼此分开由初级包层。 外包层由SiO 2或添加有诸如F，Ge等的掺杂剂的SiO 2制成。初始包层由掺杂有Er或SiO 2的SiO或掺杂有Er和F的SiO 2制成，并且形成为具有预定厚度的 1.0微米差异1.5微米以形成预定的间距S.将用于芯和初级包层的烟灰玻璃棒浸入Er-化合物溶液中，然后拾取，干燥并固化以形成Er-Al共掺杂的SiO 2 - GeO2透明玻璃棒。 将玻璃棒插入石英管并通过加热折叠以制造光纤预制棒，然后加热以拉伸以提供掺铒多芯光纤。

    Rare earth doped optical fibre amplifiers
    112.
    发明授权
    Rare earth doped optical fibre amplifiers 失效
    稀土掺杂光纤放大器

    公开(公告)号：US5491581A

    公开(公告)日：1996-02-13

    申请号：US154957

    申请日：1993-11-19

    Applicant: Giacomo S. Roba

    Inventor： Giacomo S. Roba

    IPC: G02B6/00 ,  C03B37/018 ,  C03C13/04 ,  G02B6/036 ,  G02F1/35 ,  H01S3/067 ,  H01S3/08 ,  H01S3/094 ,  H01S3/16 ,  H01S3/06

    CPC classification number: G02B6/0365 ,  C03B37/01807 ,  C03B37/01838 ,  C03C13/046 ,  G02B6/03644 ,  H01S3/06708 ,  C03B2201/10 ,  C03B2201/12 ,  C03B2201/14 ,  C03B2201/28 ,  C03B2201/31 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2203/22 ,  H01S3/06729 ,  H01S3/094011 ,  H01S3/1691

    Abstract: An optical amplifier which includes an optical fiber having an erbium doped core surrounded by cladding, a pump for pumping the fiber with pump light at a pump wavelength coupled to the fiber, input means for inputting a signal to be amplified to the amplifier and output means for outputting an amplified signal from the amplifier. The fiber has a NA higher than 0.2. The difference in the coefficient of thermal expansion of the core adjacent the core/cladding interface and the coefficient of thermal expansion of the cladding at at least one radius less than 2 .mu.m from said interface is lower than a predetermined value, corresponding to a ratio of erbium loss to background loss, at said pump wavelength, and greater than a minimum ratio of about 20 when erbium loss is 0.15 dB/m and about 120 when erbium loss is 3.5 dB/m.

    Abstract translation: 一种光放大器，包括具有被包层包围的掺铒芯的光纤，用于以耦合到光纤的泵浦波长的泵浦光泵浦光纤的泵，用于将放大的信号输入到放大器和输出装置的输入装置 用于从放大器输出放大的信号。 纤维的NA高于0.2。 在距离所述界面的小于2μm的至少一个半径处，与芯/包覆界面相邻的芯部的热膨胀系数与包层的热膨胀系数的差异小于预定值， 在铒损耗为0.15dB / m时，铒损耗与背景损耗相比，在铒损耗为3.5dB / m时，大于20左右的最小比。

    Solution doping of a silica preform with erbium, aluminum and phosphorus to form an optical fiber
    113.
    发明授权
    Solution doping of a silica preform with erbium, aluminum and phosphorus to form an optical fiber 失效
    用铒，铝和磷溶解掺杂二氧化硅预制件以形成光纤

    公开(公告)号：US5474588A

    公开(公告)日：1995-12-12

    申请号：US308165

    申请日：1994-09-16

    Applicant: Daiichirou Tanaka ,  Akira Wada ,  Tetsuya Sakai ,  Tetsuo Nozawa ,  Ryozo Yamauchi

    Inventor： Daiichirou Tanaka ,  Akira Wada ,  Tetsuya Sakai ,  Tetsuo Nozawa ,  Ryozo Yamauchi

    IPC: C03B8/04 ,  C03B20/00 ,  C03B37/014 ,  C03C13/04 ,  G02B6/00 ,  C03B37/012

    CPC classification number: C03B37/01433 ,  C03C13/045 ,  C03B2201/36

    Abstract: A manufacturing method for erbium doped silica, having a soot formation process, in which a silica glass soot is deposited on a seed rod for forming a soot preform in a porous state on the seed rod, a dopant impregnation process, wherein the soot preform is impregnated with at least an erbium compound, and a preform formation process, wherein this soot preform impregnated with a dopant is heated and rendered transparent. The dopant impregnation process is provided with an operation in which the soot preform obtained in the soot formation process is dipped in a solution containing an erbium compound, an aluminum compound, and a phosphorus compound; this is then desiccated, and soot preform which is impregnated with the erbium compound, the aluminum compound, and the phosphorus compound is obtained.

    Abstract translation: 一种铒掺杂二氧化硅的制造方法，其具有烟炱形成方法，其中将硅石烟炱沉积在用于在种棒上形成多孔状态的烟炱预型体的种棒上，掺杂剂浸渍方法，其中所述烟炱预型体为 用至少铒化合物浸渍，以及预成型物形成工艺，其中浸渍有掺杂剂的该烟炱预制件被加热并变得透明。 掺杂剂浸渍方法具有将烟灰形成工艺中获得的烟灰预制件浸入含有铒化合物，铝化合物和磷化合物的溶液中的操作; 然后将其干燥，得到浸渍有铒化合物，铝化合物和磷化合物的烟炱预制品。

    Method of making optical waveguide preforms
    115.
    发明授权
    Method of making optical waveguide preforms 失效
    制作光波导预制件的方法

    公开(公告)号：US5296012A

    公开(公告)日：1994-03-22

    申请号：US997204

    申请日：1992-12-28

    Applicant: A. Joseph Antos ,  Michael G. Blankenship

    Inventor： A. Joseph Antos ,  Michael G. Blankenship

    IPC: C03B37/018 ,  C03B8/04 ,  C03B37/014 ,  G02B6/00 ,  C03B19/06

    CPC classification number: C03B37/01413 ,  C03B37/0142 ,  C03B2201/31 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2207/06 ,  C03B2207/12 ,  C03B2207/20 ,  C03B2207/28 ,  C03B2207/32 ,  C03B2207/50

    Abstract: A vapor deposition method for making preforms from which optical waveguide fibers are drawn wherein at least a first precursor compound is oxidized at one oxidation site and at least a second precursor compound, which is different from the first precursor compound, is oxidized at a second oxidation site. The method is particularly applicable in cases where the first and second precursor compounds are chemically incompatible with one another or where the flow rate of the second precursor compound is substantially lower than the flow rate of the first precursor compound.

    Abstract translation: 一种用于制造预成型件的气相沉积方法，其中拉制光波导纤维，其中至少第一前体化合物在一个氧化位点被氧化，并且至少第二前体化合物与第一前体化合物不同，在第二氧化时被氧化 现场。 该方法特别适用于第一和第二前体化合物彼此化学不相容或第二前体化合物的流速基本上低于第一前体化合物的流速的情况。

    Method and apparatus for joining two glass parts or articles
    116.
    发明授权
    Method and apparatus for joining two glass parts or articles 失效
    用于接合两个玻璃部件或文章的方法和装置

    公开(公告)号：US3656925A

    公开(公告)日：1972-04-18

    申请号：US3656925D

    申请日：1970-05-28

    Applicant: OWENS ILLINOIS INC

    Inventor： DUNLAP GLENN H

    IPC: C03B23/047 ,  C03B23/207 ,  C03B37/012 ,  H01S3/17 ,  C03B23/20

    CPC classification number: H01S3/17 ,  C03B23/047 ,  C03B23/207 ,  C03B37/01211 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2201/40 ,  C03B2201/50 ,  C03B2201/54

    Abstract: A process for heat sealing together two preformed glass articles preferably adapted to be nested one within the other by a technique which envisions a precise and careful conditioning and treatment of the surfaces to be heat sealed, coupled with temperature control and impressment of particular low pressure conditions as in combination promote the heat sealing joinder of the surfaces and consequently the articles together in a manner as is yieldative of an ultimate produce in which the optical as well as other properties of the preformed glass, as imparted by the compositional makeup thereof, is relatively unimpaired and therefore of high quality. This method is accomplished by a device having an elongate compartment having heaters located outside, with a base to hold the glass cylinder which has an opening connected to a vacuum source at the bottom of the compartment.

    Abstract translation: 一种用于将两个预成型玻璃制品热封在一起的方法，优选地适于通过一种技术来嵌套在另一个中，这种技术设想精确和仔细地调节和处理待热密封的表面，加上温度控制和特定低压条件的压印 因为如同产生最终产品的方式组合地促进表面和制品的热封合并，其中由其组成构成赋予的预制玻璃的光学以及其它性质相对较好 不受损害，因此质量高。 该方法通过具有位于外部的具有加热器的细长隔室的装置来实现，其具有用于保持玻璃圆柱体的基座，该玻璃圆柱体具有连接到隔室底部的真空源的开口。

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