公开(公告)号：US20110142083A1

公开(公告)日：2011-06-16

申请号：US13020604

申请日：2011-02-03

Applicant: Shoji TANIGAWA ,  Teruno NAKAGUMA ,  Tomofumi ARAI ,  Kentaro ICHII

Inventor： Shoji TANIGAWA ,  Teruno NAKAGUMA ,  Tomofumi ARAI ,  Kentaro ICHII

IPC: H01S3/30 ,  G02B6/02 ,  G02B6/036 ,  H01S3/067

CPC classification number: G02B6/02 ,  C03C13/046 ,  G02B6/02395 ,  G02B6/024 ,  G02B6/0285 ,  G02B6/03611 ,  G02B6/03633 ,  G02B6/03638 ,  G02B6/03644 ,  G02B6/0365 ,  G02B6/03661 ,  H01S3/06708 ,  H01S3/06716 ,  H01S3/0672 ,  H01S3/06729 ,  H01S3/06737 ,  H01S3/1618 ,  H01S3/1691 ,  H01S3/1693

Abstract: An ytterbium-doped optical fiber includes: a core which contains at least ytterbium, aluminum, and phosphorus; and a cladding which encircles the core, wherein an aluminum oxide equivalent concentration of the aluminum in the core is 0.2 mol % or more, a diphosphorus pentaoxide equivalent concentration of the phosphorus is higher than the aluminum oxide equivalent concentration, and the core either does not contain germanium or contains less than 1.1 mol % of germanium in a germanium dioxide equivalent concentration.

Abstract translation: 镱掺杂光纤包括：至少包含镱，铝和磷的芯; 以及围绕芯的包层，芯中的铝的氧化铝当量浓度为0.2摩尔％以上，磷的五氧化二磷当量浓度高于氧化铝当量浓度，芯不会 含有锗或含有少于1.1摩尔％的二氧化锗当量浓度的锗。

公开(公告)号：US20110026106A1

公开(公告)日：2011-02-03

申请号：US12907622

申请日：2010-10-19

Applicant: Teruno NAKAGUMA ,  Kentaro ICHII ,  Shoji TANIGAWA

Inventor： Teruno NAKAGUMA ,  Kentaro ICHII ,  Shoji TANIGAWA

IPC: H01S3/067 ,  G02B6/036 ,  H01S3/063

CPC classification number: H01S3/06716 ,  C03C3/06 ,  C03C13/045 ,  C03C2201/10 ,  C03C2201/12 ,  C03C2201/14 ,  C03C2201/28 ,  C03C2201/31 ,  C03C2201/3488 ,  C03C2201/36 ,  G02B6/024 ,  G02B6/036 ,  G02B6/03605 ,  G02B6/03633 ,  G02B6/03638 ,  G02B6/03644 ,  G02B6/03661 ,  H01S3/06712 ,  H01S3/06729 ,  H01S3/0675 ,  H01S3/094007 ,  H01S3/1608 ,  H01S3/1618 ,  H01S3/1691 ,  H01S3/1693

Abstract: An ytterbium-doped optical fiber of the present invention includes: a core which contains ytterbium, aluminum, and phosphorus and does not contain germanium; and a cladding which surrounds this core. The ytterbium concentration in the core in terms of ytterbium oxide is 0.09 to 0.68 mole percent. The molar ratio between the phosphorus concentration in the core in terms of diphosphorus pentoxide and the above ytterbium concentration in terms of ytterbium oxide is 3 to 30. The molar ratio between the aluminum concentration in the core in terms of aluminum oxide and the above ytterbium concentration in terms of ytterbium oxide is 3 to 32. The molar ratio between the above aluminum concentration in terms of aluminum oxide and the above phosphorus concentration in terms of diphosphorus pentoxide is 1 to 2.5.

Abstract translation: 本发明的镱掺杂光纤包括：含有镱，铝和磷并且不含锗的芯; 以及围绕该芯的包层。 以镱氧化物计，核心中的镱浓度为0.09〜0.68摩尔％。 以氧化镱表示的核心中的磷浓度与上述镱的氧化镱浓度之间的摩尔比为3〜30。以氧化铝计的核心中的铝浓度与上述镱的浓度 氧化镱的数量为3〜32。以氧化铝计的上述铝浓度与上述磷浓度之间的摩尔比为1〜2.5。

公开(公告)号：US20110206341A1

公开(公告)日：2011-08-25

申请号：US13097563

申请日：2011-04-29

Applicant: Kentaro ICHII ,  Shoji TANIGAWA ,  Tomofumi ARAI

Inventor： Kentaro ICHII ,  Shoji TANIGAWA ,  Tomofumi ARAI

IPC: G02B6/02

CPC classification number: H01S3/06716 ,  C03C2201/28 ,  H01S3/06733 ,  H01S3/06754 ,  H01S3/1618 ,  H01S3/1693 ,  H01S3/175 ,  H01S3/302

Abstract: Provided is an ytterbium-doped optical fiber including a core containing at least ytterbium, aluminum and phosphorous and a clad surrounding the core, wherein a molar concentration of diphosphorus pentoxide with respect to phosphorus in the core is equal to a molar concentration of aluminum oxide with respect to aluminum in the core, wherein a ratio of a molar concentration of diphosphorus pentoxide with respect to phosphorus in the core to the molar concentration of ytterbium oxide with respect to ytterbium in the core is higher than or equal to 10 and lower than or equal to 30, and wherein a relative refractive index difference between the core and the clad is higher than or equal to 0.05% and lower than or equal to 0.30%.

Abstract translation: 提供了一种掺镱光纤，其包括至少含有镱，铝和磷的芯和围绕芯的包层，其中五氧化二磷相对于芯中的磷的摩尔浓度等于氧化铝与 相对于芯中的铝，其中五氧化二磷的摩尔浓度相对于芯中的磷的比例相对于芯中的镱的氧化镱的摩尔浓度的比例高于或等于10并且小于或等于 至30，并且其中所述芯和所述包层之间的相对折射率差高于或等于0.05％且低于或等于0.30％。

公开(公告)号：US20120014653A1

公开(公告)日：2012-01-19

申请号：US13243092

申请日：2011-09-23

Applicant: Kentaro ICHII ,  Shoji TANIGAWA

Inventor： Kentaro ICHII ,  Shoji TANIGAWA

IPC: G02B6/02 ,  G02B6/00

CPC classification number: C03B37/01838 ,  C03B37/01853 ,  C03B2201/28 ,  C03B2201/36 ,  C03C13/046 ,  C03C23/0095 ,  C03C2201/28 ,  C03C2201/32 ,  C03C2201/3488 ,  C03C2201/36 ,  C03C2203/54 ,  H01S3/06716 ,  H01S3/06729

Abstract: Provided is a manufacturing method for an optical fiber preform of which the core is doped with a rare earth element. The method includes: depositing glass particles within a silica tube by the modified chemical vapor deposition method, the glass particles mainly consisting of silicon dioxide; adding the rare earth element and aluminum to the glass particles within the silica tube by the solution doping method; heating the silica tube while flowing a phosphorous-containing gas into the silica tube to sinter the glass particles within the silica tube while adding the phosphorous; and heating and collapsing the silica tube to which the rare earth element, the aluminum, and the phosphorous are added.

Abstract translation: 本发明提供一种其中掺杂有稀土元素的光纤预制棒的制造方法。 该方法包括：通过改性化学气相沉积法将玻璃颗粒沉积在二氧化硅管内，玻璃颗粒主要由二氧化硅组成; 通过溶液掺杂法将稀土元素和铝添加到二氧化硅管内的玻璃颗粒中; 在将含磷气体流入二氧化硅管的同时加热二氧化硅管，以在加入磷的同时烧结二氧化硅管内的玻璃颗粒; 并且加热和塌陷添加有稀土元素，铝和磷的二氧化硅管。

公开(公告)号：US20110305251A1

公开(公告)日：2011-12-15

申请号：US13216885

申请日：2011-08-24

Applicant: Shoji TANIGAWA ,  Kentaro ICHII ,  Katsuhiro TAKENAGA ,  Kunimasa SAITOH

Inventor： Shoji TANIGAWA ,  Kentaro ICHII ,  Katsuhiro TAKENAGA ,  Kunimasa SAITOH

IPC: H01S3/067 ,  G02B6/028

CPC classification number: G02B6/03638 ,  G02B6/02033 ,  G02B6/14 ,  H01S3/06704 ,  H01S3/06733

Abstract: Provided is a multi-cladding optical fiber which includes: a core with an average refractive index n1; and a cladding including an inner cladding with an average refractive index n2 formed on the periphery of the core, an intermediate cladding with an average refractive index n3 formed on the periphery of the inner cladding, and an outer cladding with an average refractive index n4 formed on the periphery of the intermediate cladding where n1>n2>n3>n4. Two or more axisymmetric modes exist in the core at a wavelength of the signal light; the two or more axisymmetric modes including a fundamental mode and at least a high-order mode. When the fiber is bent at a predetermined bending diameter, the high-order mode in the core disperses within the inner cladding due to coupling with an inner cladding mode, so that only the fundamental mode substantially propagates through the core.

Abstract translation: 提供一种多包层光纤，其包括：具有平均折射率n1的芯; 以及形成在芯的周边上的具有平均折射率n2的内包层的包层，形成在内包层的周边上的平均折射率n3的中间包层和形成有平均折射率n4的外包层 在中间包层的周边，其中n1> n2> n3> n4。 核心在信号光的波长处存在两个或多个轴对称模式; 所述两个或多个轴对称模式包括基本模式和至少高阶模式。 当纤维以预定弯曲直径弯曲时，由于与内包层模式的耦合，芯中的高阶模分散在内包层内，使得只有基本模式基本上传播通过芯。

公开(公告)号：US20100077800A1

公开(公告)日：2010-04-01

申请号：US12630440

申请日：2009-12-03

Applicant: Kentaro ICHII ,  Takakazu GOTOH ,  Naritoshi YAMADA ,  Koichi HARADA

Inventor： Kentaro ICHII ,  Takakazu GOTOH ,  Naritoshi YAMADA ,  Koichi HARADA

IPC: C03C3/32

CPC classification number: C03B37/0142 ,  C03B37/01413 ,  C03B2201/12 ,  C03B2203/22 ,  C03B2207/22 ,  C03B2207/36 ,  C03B2207/50 ,  Y02P40/57

Abstract: A method for fabricating a porous silica preform includes the steps of supplying fuel gas for generating an oxyhydrogen flame to a glass synthesizing burner; supplying Gas A containing silicon and Gas B containing fluorine to the burner; synthesizing glass particles; and depositing the glass particles around a starting rod, in which when glass particles are deposited directly on the starting rod, a supply of Gas A and a supply of Gas B supplied to the burner are adjusted so that a ratio of the number of fluorine atoms to the number of silicon atoms in the gas supplied to the burner satisfies the following Formula (1): {(number of F atoms)/(number of Si atoms)}≦0.1  (1)

Abstract translation: 制造多孔二氧化硅预制件的方法包括以下步骤：向玻璃合成燃烧器提供产生氢氧焰的燃料气体; 将含有硅的气体A和含氟的气体B供应到燃烧器; 合成玻璃颗粒; 并且将玻璃颗粒沉积在起始棒周围，其中当玻璃颗粒直接沉积在起始棒上时，调节供应气体A和供应到燃烧器的气体B的供应，使得氟原子数 提供给燃烧器的气体中的硅原子数满足下式（1）：{（F原子数）/（Si原子数）}＆nlE; 0.1（1）