公开(公告)号：WO2003033423A1

公开(公告)日：2003-04-24

申请号：PCT/IN2001/000184

申请日：2001-10-18

Applicant: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH ,  BAR-ILAN UNIVERSITY ,  SEN, Ranjan ,  CHATTERJEE, Miss, Minati ,  NASKAR, Milan, Kanti ,  PAL, Mrinmay ,  PAUL, Mukul, Chandra ,  BHADRA, Shyamal, Kumar ,  DASGUPTA, Kamal ,  GANGULI, Dibyendu ,  BANDYOPADHYAY, Tarun ,  GEDANKEN, Aharon

Inventor： SEN, Ranjan ,  CHATTERJEE, Miss, Minati ,  NASKAR, Milan, Kanti ,  PAL, Mrinmay ,  PAUL, Mukul, Chandra ,  BHADRA, Shyamal, Kumar ,  DASGUPTA, Kamal ,  GANGULI, Dibyendu ,  BANDYOPADHYAY, Tarun ,  GEDANKEN, Aharon

IPC: C03B37/018

CPC classification number: C03B37/01838 ,  C03B37/016 ,  C03B2201/02 ,  C03B2201/12 ,  C03B2201/28 ,  C03B2201/31 ,  C03B2201/36 ,  C03C1/02 ,  C03C1/026 ,  Y02P40/57

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 elimination 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 通过遵循MCVD技术加工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，并且还在消除 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，进一步在硅溶胶中在环境温度下添加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。

公开(公告)号：WO0236510A3

公开(公告)日：2002-07-11

申请号：PCT/US0142464

申请日：2001-10-05

Applicant: CORNING INC

Inventor： CROSSLAND CARL E ,  LACOE JASON A

IPC: C03B37/012 ,  C03B37/014

CPC classification number: C03B37/01466 ,  C03B37/0124 ,  C03B37/01473 ,  C03B2201/31 ,  C03B2201/34 ,  C03B2201/36

Abstract: A method of manufacturing an optical fiber preform including providing a first tubular having a silica-containing core layer as a glass tube or soot deposit depositing a doped silica soot onto the first tubular layer to form a second tubular core layer, consolidating at least the second tubular core layer (preferably both tubular layers), and etching away at least part of the first tubular core layer by exposing the layer to an etchant. Preferably less than all of the first tubular layer is etched away. According to one embodiment, the second core layer includes a rare earth element such as Er, Tm, Nd, Pm, Yb, or Sm, for example.

Abstract translation: 一种制造光纤预制棒的方法，包括提供具有含二氧化硅的核心层作为玻璃管或烟灰沉积物的第一管状物，将第二管状核心层沉积掺杂的二氧化硅烟炱以形成第二管状核心层，将至少第二管状芯层 管状芯层（优选两个管状层），并且通过将该层暴露于蚀刻剂来蚀刻除去第一管状芯层的至少一部分。 优选地，少于全部第一管状层被蚀刻掉。 根据一个实施例，第二芯层例如包括诸如Er，Tm，Nd，Pm，Yb或Sm的稀土元素。

公开(公告)号：WO01053223A1

公开(公告)日：2001-07-26

申请号：PCT/US2000/031362

申请日：2000-11-16

IPC: C01B33/12 ,  C03B8/02 ,  C03B19/10 ,  C03B19/12 ,  C03B37/012 ,  C03B37/016 ,  C03B37/018 ,  C03C1/00 ,  C03C1/02 ,  C03C3/06

CPC classification number: C03B37/016 ,  C03B19/1065 ,  C03B19/12 ,  C03B37/01297 ,  C03B37/01838 ,  C03B2201/075 ,  C03B2201/12 ,  C03B2201/30 ,  C03B2201/34 ,  C03B2201/36 ,  C03C1/006 ,  C03C1/026 ,  C03C3/06 ,  C03C2201/06 ,  C03C2201/12 ,  C03C2201/34 ,  C03C2201/3476 ,  C03C2203/26 ,  Y10S65/901

Abstract: A sol-gel method of preparing a powder for use in forming a glass is provided, along with methods of preparing glasses and glass fibers from the powder. The inventive method allows for the incorporation of a wide range of elements and compositions into a homogeneous glass or glass fiber that is substantially free of hydroxide groups. In addition, dopants incorporated into glasses prepared by the inventive method are uniformly distributed throughout the glass structure.

Abstract translation: 提供了制备用于形成玻璃的粉末的溶胶 - 凝胶法，以及从粉末制备玻璃和玻璃纤维的方法。 本发明的方法允许将宽范围的元素和组合物并入基本上不含氢氧化物基团的均匀玻璃或玻璃纤维中。 此外，掺入通过本发明方法制备的玻璃中的掺杂剂均匀分布在整个玻璃结构中。

公开(公告)号：WO0104063A3

公开(公告)日：2001-04-26

申请号：PCT/US0016595

申请日：2000-06-16

Applicant: CORNING INC

Inventor： BENNETT RANDY L ,  FANNING ROBERT A ,  HAWTOF DANIEL W ,  WANG JI

IPC: G02B6/00 ,  C03B37/012 ,  C03B37/014 ,  C03B37/018 ,  C03B37/027

CPC classification number: C03B37/0124 ,  C03B37/027 ,  C03B2201/30 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2201/40

Abstract: Method for manufacturing optical fiber comprises the steps of laying down core and cladding materials to form a soot blank, the soot blank including a glass modifier, loading the unconsolidated soot blank into a draw tower, providing a hot zone to heat a portion of the blank to a temperature sufficient to sinter the soot into molten glass, and directly drawing the molten glass into either a consolidated, drawn preform rod (cane) or into an optical fiber.

Abstract translation: 制造光纤的方法包括以下步骤：放置芯和包层材料以形成烟灰坯料，烟炱坯料包括玻璃改性剂，将未固结的烟灰坯料装载到牵引塔中，提供热区以加热坯料的一部分 达到足以将烟灰烧结成熔融玻璃的温度，并将熔融玻璃直接拉入固结的拉伸预成型棒（甘蔗）或光纤中。

公开(公告)号：WO00030223A1

公开(公告)日：2000-05-25

申请号：PCT/US1999/026428

申请日：1999-11-09

IPC: H01S3/067 ,  H01S3/094 ,  H01S3/063 ,  G02B6/22 ,  H01S3/091

CPC classification number: H01S3/06708 ,  C03B2201/28 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2203/12 ,  G02B6/03633 ,  H01S3/06795 ,  H01S3/094003

Abstract: A very high power fiber light source can be realized by using a high concentration of doping and by pumping the cladding of the doped fiber. The light that enters the cladding will then enter the core and amplified spontaneous emission will result. With this arrangement, higher power, a broader emission spectrum, and low radiation sensitivity can be achieved. These devices can also be configured as amplifiers.

Abstract translation: 可以通过使用高浓度掺杂和泵浦掺杂光纤的包层来实现非常高功率的光纤光源。 进入包层的光然后将进入核心并且将产生放大的自发发射。 通过这种布置，可以实现更高的功率，更宽的发射光谱和低的辐射灵敏度。 这些设备也可以配置为放大器。

公开(公告)号：WO00026151A1

公开(公告)日：2000-05-11

申请号：PCT/US1999/024304

申请日：1999-10-18

IPC: G02B6/00 ,  C03B19/14 ,  C03B37/014 ,  C03B37/018

CPC classification number: C03B37/01413 ,  C03B19/1415 ,  C03B19/1423 ,  C03B37/0142 ,  C03B2201/30 ,  C03B2201/32 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2201/40 ,  C03B2201/50 ,  C03B2201/54 ,  C03B2207/32 ,  C03B2207/34 ,  C03B2207/52

Abstract: The present invention is directed to methods of producing soot used in the manufacture of optical waveguides. Both non-aqueous liquid reactants and aqueous solutions containing one or more salts are delivered through an atomizing burner assembly to form a homogenous soot stream containing the oxides of the selected elements contained within the non-aqueous liquid reactant and the aqueous solution. The resulting multi-component soot is collected by conventional methods to form preforms used in the manufacture of optical waveguide fibers. Alternatively, an aqueous solution may be atomized with a gas at a first burner assembly to form an aerosol and a reactant vaporized for delivery to a second burner assembly. Preforms produced by the methods are also disclosed. The aqueous solution is preferably one comprising a metal salt, e.g. acetate, nitrate, sulfate, carbonate, chloride, hydroxide. The metal of the metal salt is preferably an alkali metal, an alkaline earth metal, lead, lanthanum, cobalt, antimony, erbium, aluminum, neodymium, praeseodymium.

Abstract translation: 本发明涉及生产用于制造光波导的烟灰的方法。 非水性液体反应物和含有一种或多种盐的水溶液通过雾化燃烧器组件输送以形成含有非水液体反应物和水溶液中所含选定元素的氧化物的均匀烟灰流。 通过常规方法收集所得的多组分烟灰，以形成用于制造光波导纤维的预成型件。 或者，水溶液可以在第一燃烧器组件处用气体雾化以形成气溶胶和蒸发的反应物以输送到第二燃烧器组件。 还公开了通过该方法生产的预成型件。 水溶液优选为包含金属盐的溶液。 乙酸盐，硝酸盐，硫酸盐，碳酸盐，氯化物，氢氧化物。 金属盐的金属优选为碱金属，碱土金属，铅，镧，钴，锑，铒，铝，钕，镨。

公开(公告)号：US09162917B2

公开(公告)日：2015-10-20

申请号：US13410976

申请日：2012-03-02

Applicant: Ekaterina Burov ,  Alain Pastouret ,  Louis-Anne de Montmorillon ,  Aurelien Bergonzo

Inventor： Ekaterina Burov ,  Alain Pastouret ,  Louis-Anne de Montmorillon ,  Aurelien Bergonzo

IPC: H01S3/00 ,  C03B37/018 ,  C03B37/012 ,  G02B6/036 ,  H01S3/067 ,  H01S3/16

CPC classification number: C03B37/01838 ,  C03B37/01211 ,  C03B37/01823 ,  C03B37/01861 ,  C03B37/01869 ,  C03B2201/12 ,  C03B2201/28 ,  C03B2201/31 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2203/23 ,  G02B6/0365 ,  H01S3/06733 ,  H01S3/1603 ,  H01S3/1691 ,  H01S3/1693 ,  H01S3/1695

Abstract: An amplifying optical fiber includes an inner core, an inner cladding, a depressed trench, and an outer cladding (e.g., an outer optical cladding). Typically, the inner core includes a main matrix (e.g., silica-based) doped with at least one rare earth element. The depressed trench typically has a volume integral V13 of between about −2200×10−3 μm2 and −1600×10−3 μm2. Exemplary embodiments of the amplifying optical fiber are suitable for use in a compact configuration and high power applications.

Abstract translation: 放大光纤包括内芯，内包层，凹陷沟槽和外包层（例如，外光学包层）。 通常，内芯包括掺杂有至少一种稀土元素的主基体（例如，二氧化硅基）。 凹槽通常具有在-2200×10-3μm2和-1600×10-3μm2之间的体积积分V13。 放大光纤的示例性实施例适用于紧凑配置和高功率应用。

公开(公告)号：US08879879B2

公开(公告)日：2014-11-04

申请号：US13320440

申请日：2010-06-09

Applicant: Wolfgang Hämmerle ,  Lothar Brehm ,  Matthias Auth ,  Elke Poppotz

Inventor： Wolfgang Hämmerle ,  Lothar Brehm ,  Matthias Auth ,  Elke Poppotz

IPC: G02B6/02 ,  C03B37/018 ,  G02B6/036 ,  H01S3/067

CPC classification number: C03B37/01861 ,  C03B37/01838 ,  C03B37/01869 ,  C03B2201/10 ,  C03B2201/12 ,  C03B2201/28 ,  C03B2201/36 ,  C03B2201/40 ,  G02B6/03633 ,  G02B6/03638 ,  G02B6/03694 ,  H01S3/06708

Abstract: The invention relates to an optical fiber, in particular a laser fiber, containing a doped glass fiber core (1) and cladding (2) around the latter with a refraction index profile which decreases outwards from the fiber core. The optical fiber is distinguished by at least one intermediate layer (3, 4, 5) being disposed between the glass fiber core and the cladding to reduce the mechanical tension therebetween. In one advantageous embodiment, the intermediate layer is doped in such a way as to ensure a stepped mechanical tension distribution between the glass fiber core and the cladding, and is co-doped in such a way as to reduce the refractive index and counteract the refraction index-increasing effect of the intermediate layer doping. The invention further relates to an application of at least one doped barrier layer to a core region during preparation of the preform to avoid diffusion of special core dopants from the core during the collapse process, and to allow the diffusion of special dopants between the barrier layer and the core layer.

Abstract translation: 本发明涉及一种光纤，特别是激光光纤，其中包含掺杂的玻璃纤维芯（1）和包层（2），后者具有从光纤芯向外减小的折射率分布。 光纤的特征在于至少一个中间层（3,4,5）设置在玻璃纤维芯和包层之间以减小它们之间的机械张力。 在一个有利的实施例中，中间层以这样的方式被掺杂，以确保玻璃纤维芯和包层之间的阶梯式机械张力分布，并且以减少折射率并抵消折射的方式共掺杂 指数增加效应的中间层掺杂。 本发明还涉及在制备预制棒期间将至少一个掺杂的阻挡层应用于核心区域，以避免在塌陷过程中特殊的核掺杂剂从核心扩散，并且允许特殊掺杂剂在阻挡层 和核心层。

公开(公告)号：US08755660B1

公开(公告)日：2014-06-17

申请号：US13013765

申请日：2011-01-25

Applicant: John D. Minelly

Inventor： John D. Minelly

IPC: G02B6/02 ,  H04B10/17

CPC classification number: G02B6/4478 ,  C03B37/0122 ,  C03B37/01222 ,  C03B2201/08 ,  C03B2201/31 ,  C03B2201/32 ,  C03B2201/36 ,  C03B2203/12 ,  C03B2203/18 ,  C03B2203/22 ,  C03B2203/42 ,  G02B6/02042 ,  G02B6/02295 ,  G02B6/02333 ,  G02B6/02371 ,  G02B6/028 ,  G02B6/0283 ,  G02B6/036 ,  G02B6/449 ,  H01S3/06704 ,  H01S3/06716 ,  H01S3/06737 ,  H01S3/06741 ,  H01S3/06758 ,  H01S3/1067 ,  H01S3/1618 ,  H01S2301/02 ,  H01S2301/04

Abstract: An apparatus and method for compensating for mode-profile distortions caused by bending optical fibers having large mode areas. In various embodiments, the invention micro-structures the index of refraction in the core and surrounding areas of the inner cladding from the inner bend radius to the outer bend radius in a manner that compensates for the index changes that are otherwise induced in the index profile by the geometry and/or stresses to the fiber caused by the bending. Some embodiments of an apparatus and method include a fiber having a plurality of substantially parallel cores, the fiber including a straight section and a curved section; guiding signal light primarily in a second core in the straight section; guiding the signal light from the second core into a first core between the straight section and the curved section; and guiding the signal light primarily in the first core in the curved section.

Abstract translation: 一种用于补偿由具有大模式区域的弯曲光纤引起的模式轮廓畸变的装置和方法。 在各种实施例中，本发明将内包层的芯和周围区域的折射率从内弯曲半径微结构化到补偿在折射率分布中否则引起的折射率变化的方式 通过由弯曲引起的对纤维的几何形状和/或应力。 装置和方法的一些实施例包括具有多个基本平行的芯的光纤，所述光纤包括直线部分和弯曲部分; 引导信号光主要在直线部分的第二芯中; 将来自第二芯的信号光引导到直线部分和弯曲部分之间的第一芯部; 并且在弯曲部分中主要在第一芯中引导信号光。

公开(公告)号：US08620126B2

公开(公告)日：2013-12-31

申请号：US12531373

申请日：2008-03-17

Applicant: Markku Rajala ,  Mircea Hotoleanu ,  Per Stenius ,  Harri Valkonen ,  Simo Tammela ,  Pauli Kiiveri

Inventor： Markku Rajala ,  Mircea Hotoleanu ,  Per Stenius ,  Harri Valkonen ,  Simo Tammela ,  Pauli Kiiveri

IPC: G02B6/02

CPC classification number: G02B6/03627 ,  C03B37/01211 ,  C03B37/0142 ,  C03B2201/31 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2207/06 ,  C03B2207/14 ,  C03B2207/34 ,  G02B6/02019 ,  Y02P40/57

Abstract: An optical waveguide including a core, a buffer surrounding the core, and a cladding surrounding the buffer. The core, the buffer and the cladding include silica glass. A refractive index of the buffer is substantially equal to a refractive index of pure amorphous silica glass. The buffer may reduce bubble formation during manufacturing and may facilitate splicing of the waveguide. A numerical aperture of the waveguide may be fine-tuned by adjusting a radial dimension of the buffer in order to compensate variations in the refractive index of the core.

Abstract translation: 包括芯，包围芯的缓冲器和围绕缓冲器的包层的光波导。 芯，缓冲层和包层包括二氧化硅玻璃。 缓冲液的折射率基本上等于纯无定形二氧化硅玻璃的折射率。 缓冲器可以减少制造期间的气泡形成并且可以有助于波导的拼接。 波导的数值孔径可以通过调节缓冲器的径向尺寸来调节，以补偿芯的折射率的变化。