公开(公告)号：US20080063347A1

公开(公告)日：2008-03-13

申请号：US11980123

申请日：2007-10-30

Applicant: Jacob Rathje ,  Lars Gruner-Nielsen

Inventor： Jacob Rathje ,  Lars Gruner-Nielsen

IPC: G02B6/02 ,  H04J14/02

CPC classification number: G02B6/02242 ,  C03B2201/02 ,  C03B2201/12 ,  C03B2201/31 ,  C03B2203/22 ,  C03B2203/36 ,  G02B6/02261 ,  G02B6/03611 ,  G02B6/03666

Abstract: The specification describes a universal channel dispersion compensating fiber (CDCF) for WDM channel compensation that provides essentially zero dispersion slope over the wide wavelength band used in state-of-the-art transmission systems. It allows compensation of a large number of channels using a single fiber design. The improved optical fiber of the invention exhibits a dispersion slope at 1550 nm:

Abstract translation: 该说明书描述了用于WDM信道补偿的通用信道色散补偿光纤（CDCF），其在现有技术传输系统中使用的宽波段上提供基本上为零的色散斜率。 它允许使用单个光纤设计来补偿大量通道。 本发明的改进的光纤在1550nm处表现出色散斜率：<0.02PS /NM≤2km，优选<0.01PS /NM≤2km，以及 在S，C-和L波段上每km的色散的最大变化优选小于2.0ps。 在优选实施例中，这些光纤的折射率分布包括简单的三层设计，即上掺杂的中心核心，被下掺杂沟槽区域包围，进一步被上掺杂的环形区域包围。

公开(公告)号：US20080025679A1

公开(公告)日：2008-01-31

申请号：US11864375

申请日：2007-09-28

Applicant: Masashi IKEDA ,  Masakazu NAKAYAMA ,  Kuniharu HIMENO ,  Masaaki OHTSUKA ,  Masakazu OOHASHI ,  Daiichiro TANAKA

Inventor： Masashi IKEDA ,  Masakazu NAKAYAMA ,  Kuniharu HIMENO ,  Masaaki OHTSUKA ,  Masakazu OOHASHI ,  Daiichiro TANAKA

IPC: G02B6/02

CPC classification number: G02B6/024 ,  C03B2201/02 ,  C03B2201/12 ,  C03B2201/28 ,  C03B2201/31 ,  C03B2203/23 ,  C03B2203/30 ,  C03C13/046 ,  C03C13/048 ,  G02B6/02 ,  G02B6/2551 ,  H01S3/06708 ,  H01S3/06729

Abstract: An optical fiber that includes a core containing a first concentration of germanium, an inner cladding arranged on the core, the inner cladding containing a second concentration of germanium and having a first diffusion coefficient, and an outer cladding arranged on the inner cladding, the outer cladding having a second diffusion coefficient, where the first diffusion coefficient is larger than the second diffusion coefficient, and where the first concentration of germanium is about 200% or more of the second concentration of germanium. An optical fiber constructed in this manner can be spliced with an optical fiber having a different MFD, such as a single-mode optical fiber or an erbium-doped optical fiber, with low splice loss and a sufficient splicing strength.

Abstract translation: 一种光纤，其包括含有锗的第一浓度的芯，设置在芯上的内包层，包含锗的第二浓度并具有第一扩散系数的内包层以及布置在内包层上的外包层 包层具有第二扩散系数，其中第一扩散系数大于第二扩散系数，并且其中第一浓度的锗为第二浓度的锗的约200％以上。 以这种方式构造的光纤可以用具有不同MFD的光纤（例如单模光纤或掺铒光纤）进行拼接，具有低接头损耗和足够的拼接强度。

公开(公告)号：US06904217B2

公开(公告)日：2005-06-07

申请号：US10397154

申请日：2003-03-26

Applicant: David Kalish ,  Jinkee Kim ,  Robert Lingle, Jr. ,  Yifei Qian

Inventor： David Kalish ,  Jinkee Kim ,  Robert Lingle, Jr. ,  Yifei Qian

IPC: C03B37/012 ,  G02B6/028 ,  G02B6/036 ,  G02B6/02 ,  G02B6/22

CPC classification number: G02B6/02009 ,  C03B37/01228 ,  C03B2201/02 ,  C03B2201/12 ,  C03B2201/31 ,  C03B2203/22 ,  C03B2203/23 ,  C03B2203/36 ,  G02B6/02014 ,  G02B6/02242 ,  G02B6/02271 ,  G02B6/0281 ,  G02B6/03611 ,  G02B6/03644 ,  Y02P40/57

Abstract: The specification describes an improved optical fiber design in which the criteria for high performance in a Raman amplified optical system, such as moderate effective area, moderate dispersion, low dispersion slope, and selected zero dispersion wavelength, are simultaneously optimized. In preferred embodiments of the invention, the dispersion characteristics are deliberately made selectively dependent on the core radius. This allows manufacturing variability in the dispersion properties, introduced in the core-making process, to be mitigated during subsequent processing steps.

Abstract translation: 本说明书描述了一种改进的光纤设计，其中同时优化了拉曼放大光学系统中的高性能标准，例如中等有效面积，中等色散，低色散斜率和选择的零色散波长。 在本发明的优选实施例中，色散特性有选择地取决于芯半径。 这允许在后续处理步骤中减轻在制造过程中引入的分散性能的制造变异性。

公开(公告)号：US20040218881A1

公开(公告)日：2004-11-04

申请号：US10426193

申请日：2003-04-30

Inventor： Jacob Rathje ,  Lars Gruner-Nielsen

IPC: G02B006/02

CPC classification number: G02B6/02242 ,  C03B2201/02 ,  C03B2201/12 ,  C03B2201/31 ,  C03B2203/22 ,  C03B2203/36 ,  G02B6/02261 ,  G02B6/03611 ,  G02B6/03666

Abstract: The specification describes a universal channel dispersion compensating fiber (CDCF) for WDM channel compensation that provides essentially zero dispersion slope over the wide wavelength band used in state-of-the-art transmission systems. It allows compensation of a large number of channels using a single fiber design. The improved optical fiber of the invention exhibits a dispersion slope at 1550 nm:

Abstract translation: 该说明书描述了用于WDM信道补偿的通用信道色散补偿光纤（CDCF），其在现有技术传输系统中使用的宽波段上提供基本上为零的色散斜率。 它允许使用单个光纤设计来补偿大量通道。 本发明的改进的光纤在1550nm处呈现出分散斜率：<0.02PS / NM2km，优选<0.01PS / NM2km-km，并且在每秒km处的色散的最大变化， ，C-和L-带优选小于2.0Ps。 在优选实施例中，这些光纤的折射率分布包括简单的三层设计，即上掺杂的中心核心，被下掺杂沟槽区域包围，进一步被上掺杂的环形区域包围。

公开(公告)号：US06769273B1

公开(公告)日：2004-08-03

申请号：US09786470

申请日：2001-03-05

Applicant: Kazuhiro Nakagawa ,  Hiroyuki Hiraiwa

Inventor： Kazuhiro Nakagawa ,  Hiroyuki Hiraiwa

IPC: G01N2300

CPC classification number: C03B32/00 ,  C03B19/1423 ,  C03B19/1453 ,  C03B19/1469 ,  C03B19/1484 ,  C03B2201/02 ,  C03B2207/62 ,  C03B2207/70 ,  C03C3/06 ,  C03C2203/52 ,  Y10S501/905

Abstract: A silica glass member manufacturing method of the present invention includes the steps of making a silicon compound react in oxyhydrogen flame using a burner having a multi-tubular structure to obtain fine silica glass particles, depositing the fine silica glass particles on a support rotating and placed to oppose the burner to obtain a silica glass ingot with a temperature distribution in at least one plane perpendicular to a rotational axis of the silica glass ingot, the temperature distribution being symmetrical with respect to the rotational axis and having a maximal value between a center and a peripheral portion of the plane, and obtaining a distribution of signed birefringence values on the basis of birefringence values and directions of phase advance axes measured at a plurality of points in the plane perpendicular to the rotational axis of the silica glass ingot and cutting, from the silica glass ingot, a silica glass member whose signed birefringence values monotonously increase from the center to the peripheral portion of the plane.

Abstract translation: 本发明的石英玻璃构件制造方法包括以下步骤：使用具有多管状结构的燃烧器，在氢氧焰中反应硅化合物，得到细小的二氧化硅玻璃粒子，将二氧化硅玻璃微粒沉积在旋转放置的载体上 与燃烧器相对，以获得在与石英玻璃锭的旋转轴线垂直的至少一个平面中的温度分布的二氧化硅玻璃锭，温度分布相对于旋转轴线对称，并且在中心和 基于双折射值和在与石英玻璃锭的旋转轴线垂直的平面上的多个点处测量的相位提前轴的方向并且切割从而获得带符号双折射值的分布，从 石英玻璃锭，其双键双折射值单调增加的石英玻璃构件 从中心到平面的周边部分。

公开(公告)号：US06748767B2

公开(公告)日：2004-06-15

申请号：US09912129

申请日：2001-07-24

Applicant: Mary Louise Mandich ,  William David Reents, Jr.

Inventor： Mary Louise Mandich ,  William David Reents, Jr.

IPC: C03B37027

CPC classification number: C03B19/12 ,  C03B19/1453 ,  C03B37/01446 ,  C03B37/016 ,  C03B2201/02 ,  C03B2201/12

Abstract: Fiber is drawn from a preform comprising a silica body, e.g., a sol-gel derived overcladding or substrate tube. Prior to sintering, the body is treated with a gaseous mixture containing one or more non-oxygenated sulfur halides, to remove and/or reduce the size of refractory oxide particles, and/or dehydroxylate the body. Removal of metal oxide particles or reduction in their size contributes to drawing of optical fiber exhibiting desirable strength, since such particles act as initiation sites for breakage. Advantageously, the halides include sulfur chlorides, which provide desirable improvements compared to treatment by oxygenated sulfur chlorides such as thionyl chloride (SOCl2).

Abstract translation: 纤维从包含二氧化硅体（例如，溶胶 - 凝胶衍生的外包层或底物管）的预制件中抽出。 在烧结之前，用含有一种或多种非氧化硫化氢的气体混合物处理体，以除去和/或减少难熔氧化物颗粒的尺寸和/或使体内脱氢化。 去除金属氧化物颗粒或其尺寸减小有助于拉伸具有所需强度的光纤，因为这些颗粒作为断裂的起始位置。 有利地，卤化物包括与由氧化硫化物如亚硫酰氯（SOCl 2）处理相比提供期望的改进的硫化氯。

公开(公告)号：US20040005128A1

公开(公告)日：2004-01-08

申请号：US10190134

申请日：2002-07-03

Applicant: Fitel USA Corp.

Inventor： David John DiGiovanni ,  Andrew D. Yablon ,  Man Fei Yan

IPC: G02B006/16

CPC classification number: G02B6/02123 ,  C03B37/027 ,  C03B37/15 ,  C03B2201/02 ,  C03B2201/12 ,  C03B2201/28 ,  C03B2201/31 ,  C03B2203/22 ,  C03B2203/222 ,  C03B2205/40 ,  G02B6/02 ,  G02B6/02071 ,  G02B6/2551 ,  G02B6/2552

Abstract: Systems and methods are described for fabricating a varying-waveguide optical fiber. In one described method, a preform is fabricated having a core and at least one cladding region. The cladding region has a higher viscosity and the core region has a lower viscosity. The relative viscosities of the cladding region and core are chosen such that, when tension is applied to an optical fiber drawn from the preform, the applied tension is primarily borne by the cladding region thereby causing a viscoelastic strain to be frozen into the cladding region, while creating a minimal viscoelastic strain in the core. The method further includes drawing the preform into an optical fiber under an applied tension, such that a viscoelastic strain is frozen into the cladding region the frozen-in viscoelastic strain decreasing the cladding region refractive index. The cladding region refractive index is changed in a section of the optical fiber by heating the section so as to relax the viscoclastic strain frozen into the cladding region in the section of fiber, thereby increasing the cladding region refractive index in the section of fiber.

Abstract translation: 描述了制造变波导光纤的系统和方法。 在一种所描述的方法中，制造具有芯和至少一个包层区的预成型件。 包层区域具有较高的粘度，并且核心区域具有较低的粘度。 选择包层区域和芯体的相对粘度，使得当对从预成型体拉出的光纤施加张力时，施加的张力主要由包层区域承担，从而使粘弹性应变冻结在包层区域中， 同时在核心中产生最小的粘弹性应变。 该方法还包括在施加的张力下将预型件拉伸成光纤，使得粘弹性应变被冻结到包层区域中，使冷冻的粘弹性应变降低包层区折射率。 通过加热该部分使包层区折射率变化，使得在纤维截面中冻结到包层区域的粘弹性应变松弛，从而增加纤维截面中的包层区折射率。

公开(公告)号：US20030145630A1

公开(公告)日：2003-08-07

申请号：US10291813

申请日：2002-11-12

Inventor： Masaaki Hirano ,  Eiji Yanada ,  Masashi Onishi

IPC: C03B037/028

CPC classification number: C03C3/06 ,  C03B37/01211 ,  C03B37/01228 ,  C03B37/01248 ,  C03B37/0126 ,  C03B2201/02 ,  C03B2201/10 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2201/28 ,  C03B2201/31 ,  C03B2203/23 ,  C03B2203/36 ,  G02B6/02285 ,  G02B6/03627

Abstract: An optical fiber preform having a low core noncircularity and eccentricity for producing an optical fiber having an improved polarization mode dispersion, a method for producing the preform, and an optical fiber produced from the preform. The optical fiber preform is produced by the following steps. Diameter-reduced portions 11a and 11b are formed in the vicinity of the ends of the glass pipe 11. A glass rod 12 is inserted into the glass pipe 11. The glass rod 12 is fixed to the glass pipe 11 at the diameter-reduced portion 11a. The glass pipe 11 and the glass rod 12 are heat-unified from the diameter-reduced portion 11b forward to the diameter-reduced portion 11a. The optical fiber preform has a core noncircularity of at most 1.5%. The optical fiber has a polarization mode dispersion of at most 0.15 ps/km1/2 at a wavelength of 1,550 nm.

Abstract translation: 一种具有低芯非圆度和偏心率的光纤预制件，用于制造具有改进的偏振模色散的光纤，由预成型件制造的预制棒的制造方法和光纤。 光纤预制棒通过以下步骤制造。 直径减小部分11a和11b形成在玻璃管11的端部附近。玻璃棒12插入到玻璃管11中。玻璃棒12在直径减小部分处固定到玻璃管11上 11a。 玻璃管11和玻璃棒12从直径减小部分11b向前加热到直径减小部分11a。 光纤预制棒的芯非圆度至多为1.5％。 该光纤在波长1550nm处具有至多0.15ps / km1 / 2的偏振模色散。

公开(公告)号：US06574991B1

公开(公告)日：2003-06-10

申请号：US09658200

申请日：2000-09-08

Applicant: Robert S. Pavlik, Jr. ,  Lawrence H. Kotacska

Inventor： Robert S. Pavlik, Jr. ,  Lawrence H. Kotacska

IPC: C03B514

CPC classification number: C03B19/1407 ,  C03B2201/02 ,  C03B2201/03 ,  C03B2201/07 ,  C03B2201/42 ,  C03B2207/32 ,  C03B2207/50 ,  C04B35/10 ,  F27B9/26 ,  F27B17/00 ,  F27D1/0006 ,  F27D1/0043 ,  F27D3/0033

Abstract: An article of relatively pure silica, and a furnace and method of producing the article. The article is produced by collecting molten silica particles in a refractory furnace in which at least a portion of the refractory has been exposed to a halogen-containing gas to react with contaminating metal ions in the refractory.

Abstract translation: 相对纯二氧化硅的制品，以及制造该制品的炉子和方法。 该制品通过在难熔炉中收集熔融二氧化硅颗粒而制备，其中耐火材料的至少一部分暴露于含卤素的气体中以与耐火材料中的污染金属离子反应。

公开(公告)号：US06546177B1

公开(公告)日：2003-04-08

申请号：US09830027

申请日：2001-04-20

Applicant: Shoichiro Matsuo ,  Shoji Tanigawa ,  Tomio Abiru

Inventor： Shoichiro Matsuo ,  Shoji Tanigawa ,  Tomio Abiru

IPC: G02B602

CPC classification number: G02B6/03666 ,  C03B37/01413 ,  C03B37/01807 ,  C03B2201/02 ,  C03B2201/12 ,  C03B2201/31 ,  C03B2203/22 ,  C03B2203/36 ,  G02B6/02019 ,  G02B6/02238 ,  G02B6/03611 ,  G02B6/03633

Abstract: In the present invention, by forming a dispersion shifted optical fiber that has a refractive index profile comprising: a central core portion 1; a step core portion 2 provided at an outer periphery of the central core portion 1 and having a refractive index lower than that of the central core portion 1; and cladding 7 provided at an outer periphery of the step core portion 2 and having a refractive index lower than that of the step core portion 2, and which dispersion shifted optical fiber has, in a used wavelength band that is selected from between 1490 and 1625 nm, chromatic dispersion values of 7 to 15 ps/km/nm, an Aeff of 60 to 150 &mgr;m2, a dispersion slope of 0.09 ps/km/nm2 or less, a bending loss of 100 dB/m or less, and a cutoff wavelength that provides essentially single mode transmission, it is possible to reduce the cost of the system and to achieve n improvement in the transmission characteristics.

Abstract translation: 在本发明中，通过形成具有折射率分布的色散位移光纤，包括：中心芯部分1; 设置在中心芯部1的外周并具有比中央芯部1的折射率低的折射率的台阶芯部2; 以及设置在台阶芯部2的外周并且折射率低于台阶芯部2的折射率的包层7，并且该色散位移光纤具有在从1490到1625之间的使用波长带中 nm，色散值为7〜15ps / km / nm，Aeff为60〜150mum2，色散斜率为0.09ps / km / nm2以下，弯曲损耗为100dB / m以下，截止频率为 提供基本单模传输的波长，可以降低系统的成本并实现传输特性的提高。