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    Subwavelength-diameter silica wires for low-loss optical waveguiding
    61.
    发明授权
    Subwavelength-diameter silica wires for low-loss optical waveguiding 失效
    用于低损耗光波导的亚波长直径二氧化硅导线

    公开(公告)号：US07620281B2

    公开(公告)日：2009-11-17

    申请号：US12169173

    申请日：2008-07-08

    Applicant: Eric Mazur ,  Limin Tong ,  Rafael Gattass

    Inventor： Eric Mazur ,  Limin Tong ,  Rafael Gattass

    IPC: G02B6/02 ,  G02B6/26

    CPC classification number: G02B6/107 ,  B82Y20/00 ,  C03B37/025 ,  C03B37/027 ,  C03B37/15 ,  C03B2201/02 ,  C03B2201/34 ,  G02B6/2552 ,  G02B6/2835

    Abstract: The present invention provides nanometer-sized diameter silica fibers that exhibit high diameter uniformity and surface smoothness. The silica fibers can have diameters in a range of a about 20 nm to about 1000 nm. An exemplary method according to one embodiment of the invention for generating such fibers utilizes a two-step process in which in an initial step a micrometer sized diameter silica preform fiber is generated, and in a second step, the silica preform is drawn while coupled to a support element to form a nanometer sized diameter silica fiber. The portion of the support element to which the preform is coupled is maintained at a temperature suitable for drawing the nansized fiber, and is preferably controlled to exhibit a temporally stable temperature profile.

    Abstract translation: 本发明提供了纳米级直径的二氧化硅纤维，其表现出高直径均匀性和表面光滑度。 二氧化硅纤维的直径可以在约20nm至约1000nm的范围内。 根据用于产生这种纤维的本发明的一个实施方案的示例性方法利用两步法，其中在初始步骤中产生微米尺寸的直径的二氧化硅预制纤维，并且在第二步骤中，将二氧化硅预制件拉制，同时连接到 形成纳米尺寸直径的二氧化硅纤维的支撑元件。 将预型件连接到的支撑元件的部分保持在适于拉制纳米纤维的温度，并且优选地被控制以呈现时间上稳定的温度分布。

    SYNTHETIC QUARTZ GLASS WITH FAST AXES OF BIREFRINGENCE DISTRIBUTED IN CONCENTRIC-CIRCLE TANGENT DIRECTIONS AND PROCESS FOR PRODUCING THE SAME
    62.
    发明申请
    SYNTHETIC QUARTZ GLASS WITH FAST AXES OF BIREFRINGENCE DISTRIBUTED IN CONCENTRIC-CIRCLE TANGENT DIRECTIONS AND PROCESS FOR PRODUCING THE SAME 审中-公开

    公开(公告)号：US20080292882A1

    公开(公告)日：2008-11-27

    申请号：US12182361

    申请日：2008-07-30

    Applicant: Noriyuki AGATA ,  Masaaki TAKATA ,  Tomonori OGAWA ,  Kei IWATA

    Inventor： Noriyuki AGATA ,  Masaaki TAKATA ,  Tomonori OGAWA ,  Kei IWATA

    IPC: C03C12/00 ,  C03B37/005

    CPC classification number: C03B19/1453 ,  C03B2201/02 ,  C03B2201/04 ,  C03C3/06 ,  C03C4/0071 ,  C03C4/0085 ,  C03C2201/23 ,  C03C2203/44 ,  Y02P40/57 ,  Y10T428/2982

    Abstract: The present invention provides a synthetic quartz glass having a diameter of 100 mm or more for using in an optical apparatus comprising a light source emitting a light having a wavelength of 250 nm or less, the synthetic quartz glass having, in a region located inward from the periphery thereof by 10 mm or more in a plane perpendicular to the optical axis of the synthetic quartz glass: a birefringence of 0.5 nm or less per thickness of 1 cm with respect to a light having a wavelength of 193 nm; an OH group concentration of 60 ppm or less; an averaged differential OH group concentration from the center of the synthetic quartz glass toward a peripheral direction thereof, normalized with respect to the radius of the synthetic quartz glass, of −8 to +60 ppm; and an unbiased standard deviation a of a differential OH group concentration from the center of the synthetic quartz glass toward a peripheral direction thereof, normalized with respect to the radius of the synthetic quartz glass, of 10 ppm or less, the unbiased standard deviation a being determined with the following formula (1): σ = ∑ i = 1 n  ( X i - X _ ) 2 n - 1   providing  ;   X i = Δ   n _ OH   i Δ   r i * = n _ OH   i - n _ OH   i + 1  r i * -  r i + 1 * ( 1 ) : differential OH group concentration at measurement point i normalized with respect to the radius R of the synthetic quartz glass; n _ OH   i = n OH   i - 1 + n OH   i + n OH   i + 1 3 : OH group concentration at measurement point i in terms of moving average for three points including the two points before and after the measurement point i;  r i * = r i R : radius at measurement point i normarized with respect to the radius R of the synthetic quartz glass; X : average of OH group concentrations Xi in the whole evaluation region; and n : number of measurement points in the evaluation region (integer of 2 or more).

    Subwavelength-diameter silica wires for low-loss optical waveguiding
    63.
    发明授权
    Subwavelength-diameter silica wires for low-loss optical waveguiding 有权
    用于低损耗光波导的亚波长直径二氧化硅导线

    公开(公告)号：US07421173B2

    公开(公告)日：2008-09-02

    申请号：US11013198

    申请日：2004-12-15

    Applicant: Eric Mazur ,  Limin Tong ,  Rafael Gattass

    Inventor： Eric Mazur ,  Limin Tong ,  Rafael Gattass

    IPC: G02B6/02 ,  G02B6/26

    CPC classification number: G02B6/107 ,  B82Y20/00 ,  C03B37/025 ,  C03B37/027 ,  C03B37/15 ,  C03B2201/02 ,  C03B2201/34 ,  G02B6/2552 ,  G02B6/2835

    Abstract: The present invention provides nanometer-sized diameter silica fibers that exhibit high diameter uniformity and surface smoothness. The silica fibers can have diameters in a range of a about 20 nm to about 1000 nm. An exemplary method according to one embodiment of the invention for generating such fibers utilizes a two-step process in which in an initial step a micrometer sized diameter silica preform fiber is generated, and in a second step, the silica preform is drawn while coupled to a support element to form a nanometer sized diameter silica fiber. The portion of the support element to which the preform is coupled is maintained at a temperature suitable for drawing the nansized fiber, and is preferably controlled to exhibit a temporally stable temperature profile.

    Abstract translation: 本发明提供了纳米级直径的二氧化硅纤维，其表现出高直径均匀性和表面光滑度。 二氧化硅纤维的直径可以在约20nm到约1000nm的范围内。 根据用于产生这种纤维的本发明的一个实施方案的示例性方法利用两步法，其中在初始步骤中产生微米尺寸直径的二氧化硅预制纤维，并且在第二步骤中，将二氧化硅预制件拉制，同时连接到 形成纳米尺寸直径的二氧化硅纤维的支撑元件。 将预型件连接到的支撑元件的部分保持在适于拉制纳米纤维的温度，并且优选地被控制以呈现时间上稳定的温度分布。

    PROCESS FOR PRODUCING SYNTHETIC QUARTZ GLASS, JIG FOR SYNTHETIC-QUARTZ-GLASS PRODUCTION, AND SYNTHETIC QUARTZ GLASS FOR OPTICAL MEMBER
    64.
    发明申请
    PROCESS FOR PRODUCING SYNTHETIC QUARTZ GLASS, JIG FOR SYNTHETIC-QUARTZ-GLASS PRODUCTION, AND SYNTHETIC QUARTZ GLASS FOR OPTICAL MEMBER 失效
    用于生产合成石英玻璃的合成石英玻璃生产方法和用于光学成员的合成石英玻璃

    公开(公告)号：US20070289331A1

    公开(公告)日：2007-12-20

    申请号：US11839871

    申请日：2007-08-16

    Applicant: Keigo Hino

    Inventor： Keigo Hino

    IPC: C03B19/06 ,  C03C3/06 ,  C03B11/08 ,  C03B7/14 ,  C03B37/018 ,  C03C25/00

    CPC classification number: C03B19/1453 ,  C03B2201/02 ,  C03C3/06

    Abstract: An object of the invention is to provide a process for producing a synthetic quartz glass while taking account of a refractive index distribution remaining in the synthetic quartz glass; a jig for use in the synthetic-quartz-glass production process; and a synthetic quartz glass for an optical member, produced by the process. A process for producing a synthetic quartz glass, which comprises: depositing and growing fine quartz glass particles synthesized by flame hydrolysis of a glass-forming material on a rotating target to thereby form a porous quartz glass base of a substantially cylindrical shape; presintering the porous quartz glass base; and heating the presintered porous quartz glass base to a temperature not lower than the vitrification temperature to convert the base into a transparent glass, wherein in the step of conversion into a transparent glass, the porous quartz glass base is placed so as to make its growth axis vertical and a load is vertically imposed on the thus-placed porous quartz glass base.

    Abstract translation: 本发明的目的是提供一种制造合成石英玻璃的方法，同时考虑到合成石英玻璃中残留的折射率分布; 用于合成石英玻璃生产工艺的夹具; 以及通过该方法制造的用于光学部件的合成石英玻璃。 一种合成石英玻璃的制造方法，其特征在于，包括：在旋转靶上沉积并生长由玻璃形成材料的火焰水解合成的精细石英玻璃粒子，形成大致圆筒状的多孔石英玻璃基材; 预烧结多孔石英玻璃基底; 将预烧结的多孔石英玻璃基体加热到不低于玻璃化温度的温度，将基底转变为透明玻璃，其中在转化为透明玻璃的步骤中，放置多孔石英玻璃基底使其生长 并且负载垂直施加在如此放置的多孔石英玻璃基底上。

    Long wavelength, pure silica core single mode fiber and method of forming the same
    65.
    发明授权
    Long wavelength, pure silica core single mode fiber and method of forming the same 有权
    长波长，纯硅芯单模光纤及其形成方法

    公开(公告)号：US06947650B1

    公开(公告)日：2005-09-20

    申请号：US10840130

    申请日：2004-05-06

    Applicant: Daniel Scott Homa

    Inventor： Daniel Scott Homa

    IPC: C03B37/018 ,  G02B6/00 ,  G02B6/02 ,  G02B6/16

    CPC classification number: C03C13/04 ,  C03B37/01807 ,  C03B2201/02 ,  C03B2201/12 ,  C03B2201/14 ,  C03B2201/28 ,  C03B2203/24 ,  G02B6/02

    Abstract: An optical fiber suitable to support single mode optical transmission at longer wavelengths (e.g., 1550 nm) is formed to comprise a pure silica core region and a “down doped” cladding layer. The core region is defined as having a diameter d and the cladding layer is defined has having an outer diameter D. In accordance with the present invention, single mode propagation will be supported when D/d>8.5, and is preferably in the range of 9–10.

    Abstract translation: 形成适合于支持较长波长（例如1550nm）的单模光传输的光纤，以包括纯二氧化硅芯区域和“下掺杂”包覆层。 芯区域被定义为具有直径d，并且包层具有外径D.根据本发明，当D / d> 8.5时，将支持单模传播，并且优选在 9-10。

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