High power optical fibers
    1.
    发明授权
    High power optical fibers 有权
    大功率光纤

    公开(公告)号:US09146345B1

    公开(公告)日:2015-09-29

    申请号:US13744968

    申请日:2013-01-18

    IPC分类号: G02B6/02 C03B37/027

    摘要: Photonic bandgap fibers are described that can be solid across the core and clad and have a large core diameter with little loss in the fundamental mode. In addition, the mode loss of the higher order modes can be much greater than that of the fundamental mode, providing high power fibers with high effective mode area. Excellent single mode output can be obtained from the fibers in length scale close to what is required for fiber laser and amplifiers.

    摘要翻译: 光子带隙光纤被描述为可以穿过核心并且包层并且具有大的芯径,而在基本模式中几乎没有损失。 此外,高阶模式的模式损耗可以远大于基本模式的模式损耗,提供具有高有效模式面积的高功率光纤。 光纤激光器和放大器所需的光纤长度可以获得优异的单模输出。

    Method and a manufacturing apparatus for manufacturing a fiber preform
    3.
    发明申请
    Method and a manufacturing apparatus for manufacturing a fiber preform 审中-公开
    纤维预制件的制造方法和制造装置

    公开(公告)号:US20070144216A1

    公开(公告)日:2007-06-28

    申请号:US10554082

    申请日:2004-04-22

    IPC分类号: C03B37/018 C03C25/10

    摘要: A method and manufacturing apparatus for forming one or several material layers inside a basic tube, which basic tube is used in the manufacture of an optical fiber preform. The surface inside the basic tube is electrically charged by guiding a first electrically charged gas flow inside the basic tube, whereafter a second electrically charged gas flow is guided into the basic tube. The gas flow contains material particles and the sequentially alternating first gas flow and second gas flow have opposite charges.

    摘要翻译: 一种用于在基本管内形成一个或多个材料层的方法和制造装置,该基本管用于制造光纤预制件。 基本管内的表面通过引导基本管内的第一带电气体气流而被带电,之后将第二带电气体流引导到基管中。 气流包含材料颗粒,顺序交替的第一气流和第二气流具有相反的电荷。

    Method for charging particles in a material manufacturing process
    4.
    发明申请
    Method for charging particles in a material manufacturing process 审中-公开
    在材料制造过程中装入颗粒的方法

    公开(公告)号:US20070062222A1

    公开(公告)日:2007-03-22

    申请号:US10554083

    申请日:2004-04-22

    IPC分类号: C03B37/018 C03C25/00

    摘要: A method for charging particles used for processing of a material. At least a gaseous reactant is supplied and oxidizing gas is supplied to the reactant. The oxidizing gas is charged electrically before it is supplied to the reactant. The reactant and the oxidizing gas form charged particles. The material to be processed is advantageously a multicomponent oxide construction, such as an optical fiber preform. The invention also related to a charging device implementing the method.

    摘要翻译: 一种用于加料材料加工的颗粒的方法。 供应至少一种气态反应物,并向该反应物供应氧化气体。 氧化气体在被供给到反应物之前被电荷充电。 反应物和氧化气体形成带电粒子。 待加工的材料有利地是多组分氧化物结构,例如光纤预制棒。 本发明还涉及实现该方法的充电装置。

    Easy removal of a thin-walled tube in a powder-in-tube (PIT) process
    7.
    发明授权
    Easy removal of a thin-walled tube in a powder-in-tube (PIT) process 有权
    在管内粉末(PIT)工艺中轻松取出薄壁管

    公开(公告)号:US09487428B2

    公开(公告)日:2016-11-08

    申请号:US14640584

    申请日:2015-03-06

    申请人: OFS Fitel, LLC

    发明人: Dennis J Trevor

    IPC分类号: C03B37/012

    摘要: The embodiments disclosed herein seek to ameliorate high costs associated with the use of ultra-pure silica by using a lower-cost starting material and purifying the lower-cost starting material to an acceptable level of purity during the preform manufacturing process. In one embodiment, a nucleating compound is coated on a thin-walled silica tube, which upon cooling, forms cristobalite allowing for easy removal of the thin-walled silica tube.

    摘要翻译: 本文公开的实施方案旨在通过使用较低成本的起始材料和在预成型制造过程中将较低成本起始材料纯化至可接受的纯度来改善与使用超纯二氧化硅相关的高成本。 在一个实施方案中,将成核化合物涂覆在薄壁石英管上,其在冷却时形成方英石,允许容易地除去薄壁二氧化硅管。

    MULTI-CORE OPTICAL FIBER
    9.
    发明申请
    MULTI-CORE OPTICAL FIBER 有权
    多芯光纤

    公开(公告)号:US20110206331A1

    公开(公告)日:2011-08-25

    申请号:US13045039

    申请日:2011-03-10

    申请人: Katsunori IMAMURA

    发明人: Katsunori IMAMURA

    IPC分类号: G02B6/036

    摘要: A multi-core optical fiber includes a plurality of core portions. The diameter of each of the core portions is 12 micrometers or smaller, the relative refractive-index difference of the core portions with respect to the cladding portion is 0.2% or larger, the cut-off wavelength is 1.53 micrometers or smaller, the bending loss at a 1.55-micrometer wavelength is 10 dB/m or smaller, the effective core area at a 1.55-micrometer wavelength is 30 μm2 or larger, and the cross-talk of light between the core portions is −35 decibels or smaller.

    摘要翻译: 多芯光纤包括多个芯部。 芯部的直径为12微米以下,芯部相对于包层部的相对折射率差为0.2%以上,截止波长为1.53微米以下,弯曲损耗 在1.55微米的波长下,在1.55微米波长处的有效核心面积为30平方米或更大,并且核心部分之间的光的串扰为-35分贝或更小。

    Chemical powder deposition method for the manufacture of optical fiber preforms and optical fibers
    10.
    发明申请
    Chemical powder deposition method for the manufacture of optical fiber preforms and optical fibers 审中-公开
    用于制造光纤预制棒和光纤的化学粉末沉积方法

    公开(公告)号:US20040226319A1

    公开(公告)日:2004-11-18

    申请号:US10440208

    申请日:2003-05-15

    IPC分类号: C03B037/016

    摘要: The specification describes the production of optical fibers and optical fiber preforms using Chemical Powder Deposition (CPD). In this process a slurry of silica powders and dopant powders in a liquid carrier is prepared and the inside surface of a silica glass starter tube is coated with the slurry, then dried. The coating is then consolidated and the tube collapsed as in the conventional MCVD process. Multiple coatings, and coatings with varying compositions, can be used to produce any desired profile. In an alternative embodiment, doped silica glass of the desired final composition is prepared, and then pulverized to form the powder for the slurry. In both embodiments, the use of powders of known composition in the slurry allows direct control over the final glass composition, as compared with conventional processes in which the composition in the final glass is indirectly controlled by control of the thermodynamics of a vapor phase reaction.

    摘要翻译: 该规范描述了使用化学粉末沉积(CPD)制造光纤和光纤预制棒。 在该方法中,制备液体载体中的二氧化硅粉末和掺杂剂粉末的浆料,并且将石膏玻璃起始管的内表面涂覆有浆料,然后干燥。 然后将涂层固化,并且管如同传统的MCVD工艺那样折叠。 可以使用具有不同组成的多个涂层和涂层来产生任何所需的轮廓。 在替代实施方案中,制备所需最终组合物的掺杂二氧化硅玻璃,然后粉碎以形成用于浆料的粉末。 在两个实施方案中,与其中通过控制气相反应的热力学间接控制最终玻璃中的组成的常规方法相比,在浆料中使用已知组合物的粉末允许直接控制最终的玻璃组合物。