公开(公告)号：US20080063346A1

公开(公告)日：2008-03-13

申请号：US11896999

申请日：2007-09-07

申请人： Tetsuya Nakanishi ,  Takemi Hasegawa ,  Masaaki Hirano

发明人： Tetsuya Nakanishi ,  Takemi Hasegawa ,  Masaaki Hirano

IPC分类号： G02B6/02 ,  G02B6/00

CPC分类号： G02B6/03627 ,  C03C13/046 ,  G02B6/02028 ,  G02B6/02242 ,  G02F1/3515 ,  G02F1/395 ,  H01S3/06716 ,  H01S3/302 ,  H01S2301/02

摘要： An optical fiber and an optical fiber device, which can suppress generation of the stimulated Brillouin scattering while maintaining large nonlinearity. The fiber includes a central core which is made of SiO2 as a main component and contains Al2O3 at concentration of 15 wt % or more. The fiber is allowed to propagate only a fundamental mode and has an absolute value of chromatic dispersion of 5 ps/nm/km or less at a predetermined wavelength. The device includes the fiber having the above composition. The fiber guides first light and second light having different wavelengths to propagate therethrough such that the first light and the second light interact with each other by a nonlinear optical phenomenon during the propagation, thus causing the fiber to output the first light or the second light modulated by the nonlinear optical phenomenon or third light newly produced by the nonlinear optical phenomenon and having a different wavelength.

摘要翻译： 一种光纤和光纤器件，其可以抑制受激布里渊散射的产生，同时保持非常大的非线性。 该纤维包括以SiO 2主要成分为主成分并含有15重量％浓度的Al 2 O 3 O 3的中心芯，或 更多。 允许光纤仅传播基本模式，并且在预定波长下具有5ps / nm / km或更小的色散的绝对值。 该装置包括具有上述组成的纤维。 纤维引导具有不同波长的第一光和第二光传播通过其中，使得第一光和第二光在传播期间通过非线性光学现象彼此相互作用，从而使光纤输出第一光或第二光调制 由非线性光学现象或由非线性光学现象新产生的具有不同波长的第三光。

公开(公告)号：US20070053641A1

公开(公告)日：2007-03-08

申请号：US11516517

申请日：2006-09-07

申请人： Masaaki Hirano ,  Tetsuya Nakanishi ,  Toshiaki Okuno

发明人： Masaaki Hirano ,  Tetsuya Nakanishi ,  Toshiaki Okuno

IPC分类号： G02B6/02 ,  G02B6/028 ,  G02B6/036

CPC分类号： G02B6/02214 ,  G02B6/02028 ,  G02B6/02242 ,  G02B6/0228 ,  G02B6/02285 ,  G02B6/0281 ,  G02B6/03627 ,  G02B6/03644 ,  G02B6/0365 ,  G02B6/03666 ,  G02F1/3536 ,  G02F2201/02

摘要： There is disclosed an optical fiber wherein an absolute value of the fourth order dispersion β4 of fourth derivative β4 of propagation constant β with respect to angular frequency ω at a mean zero dispersion wavelength λ0 in an overall length is not more than 5×10−56 s4/m and wherein a fluctuation of a zero dispersion wavelength along a longitudinal direction is not more than ±0.6 nm.

摘要翻译： 公开了一种光纤，其中传播常数β的第四导数β4的四阶色散β4的绝对值相对于平均值为0的角频率ω 在整个长度上的色散波长λ0 <0>不大于5×10 -6 / 4，其中零色散波长的波动沿着 纵向方向不大于±0.6nm。

公开(公告)号：US20060245705A1

公开(公告)日：2006-11-02

申请号：US11398769

申请日：2006-04-06

申请人： Masaaki Hirano ,  Kazumasa Makihara ,  Tetsuya Nakanishi

发明人： Masaaki Hirano ,  Kazumasa Makihara ,  Tetsuya Nakanishi

IPC分类号： G02B6/02

CPC分类号： G02B6/03666 ,  C03B37/01228 ,  C03B37/01245 ,  C03B37/01466 ,  C03B37/01861 ,  G02B6/02028 ,  G02B6/02261 ,  G02B6/03611 ,  G02B6/03627 ,  G02B6/03633 ,  G02B6/03644

摘要： Provided is a method of manufacturing an optical fiber preform from which an optical fiber having the desired characteristics can easily be produced. The method comprises the steps of: (1) preparing an intermediate preform for manufacturing an optical fiber preform; (2) measuring a refractive index profile in a radial direction at each of a plurality of positions in the longitudinal direction of the intermediate preform; (3) demarcating the outer diameter shape of the intermediate preform based on the result of the step of measuring the refractive index profile so that an optical fiber preform can be manufactured such that an optical fiber having the desired characteristics may be produced from the optical fiber preform; (4) elongating the outer periphery of the intermediate preform so that the outer diameter shape may be formed as demarcated in the step of demarcating the outer diameter shape; and (5) drawing, so as to have a substantially constant outer diameter, the intermediate preform that has been subjected to the grinding step.

摘要翻译： 提供一种可以容易地制造具有所需特性的光纤的光纤预制棒的制造方法。 该方法包括以下步骤：（1）制备用于制造光纤预制棒的中间预型件; （2）在中间预制件的纵向方向上的多个位置的每一个处测量径向方向上的折射率分布; （3）基于测量折射率分布的步骤的结果来划定中间预成型件的外径形状，使得可以制造光纤预制件，使得可以从光纤产生具有期望特性的光纤 预制件 （4）使中间预制件的外周伸长，使外径形状可以在划定外径形状的步骤中形成为划线; 和（5）拉伸，以具有基本上恒定的外径，已经经过研磨步骤的中间预成型件。

公开(公告)号：US20110085768A1

公开(公告)日：2011-04-14

申请号：US12903798

申请日：2010-10-13

申请人： Tetsuya Nakanishi ,  Masaaki Hirano ,  Tetsuya Haruna ,  Maki Ikechi

发明人： Tetsuya Nakanishi ,  Masaaki Hirano ,  Tetsuya Haruna ,  Maki Ikechi

IPC分类号： G02B6/44 ,  G02B6/02

CPC分类号： C03B37/02727 ,  C03B2203/19 ,  C03B2203/222 ,  G02B6/02 ,  G02B6/02366 ,  G02B6/03627 ,  G02B6/0365 ,  G02B6/03694

摘要： An optical fiber having excellent strength that can be manufactured at low cost, as well as a method for making such optical fiber, is provided. An optical fiber 1 is a silica-based optical fiber comprising a core 11, an optical cladding 12 surrounding the core 11, and a jacketing region 13 surrounding the optical cladding 12 and having a uniform composition throughout from the internal circumference to the outer circumference. A compressive strained layer having a residual compressive stress is provided at the outermost circumference of the jacketing region 13.

摘要翻译： 提供了具有可以低成本制造的优异强度的光纤以及制造这种光纤的方法。 光纤1是包括芯11，围绕芯11的光学包层12和围绕光学包层12并且具有从内周到外周均匀组成的护套区域13的二氧化硅基光纤。 在护套区域13的最外周设有具有残余压应力的压应变层。

公开(公告)号：US07787730B2

公开(公告)日：2010-08-31

申请号：US11922783

申请日：2007-03-12

申请人： Masaaki Hirano ,  Tetsuya Nakanishi ,  Toshiaki Okuno

发明人： Masaaki Hirano ,  Tetsuya Nakanishi ,  Toshiaki Okuno

IPC分类号： G02B6/02

CPC分类号： G02B6/03627 ,  G02B6/02028 ,  G02B6/02242 ,  G02B6/02257 ,  G02B6/02271 ,  G02F1/3532 ,  G02F2001/3528

摘要： An optical fiber and a broadband light source that can generate SC light having a broader bandwidth. A broadband light source 1 is equipped with a seed light source 11 and an optical fiber 12. The seed light source 11 outputs light having a central wavelength in the wavelength range of 1500 nm to 1650 nm. The optical fiber 12 outputs supercontinuum light a result of input of the light output from the seed light source. The optical fiber 12, which has a zero dispersion wavelength in the wavelength range of 1300 nm to 1500 nm and an effective area of 12 μm2 or less at the central wavelength, outputs supercontinuum light having a wavelength bandwidth expanded to 1000 nm or more.

摘要翻译： 可以产生具有更宽带宽的SC光的光纤和宽带光源。 宽带光源1配备有种子光源11和光纤12.种子光源11输出在1500nm至1650nm的波长范围内的中心波长的光。 光纤12输出来自种子光源的光输出的结果的超连续光。 在中心波长处具有在1300nm至1500nm的波长范围内的零色散波长和12μm2或更小的有效面积的光纤12输出具有扩展至1000nm以上的波长带宽的超连续光。

公开(公告)号：US20070283721A1

公开(公告)日：2007-12-13

申请号：US11665600

申请日：2005-10-20

申请人： Tetsuya Nakanishi ,  Masaaki Hirano

发明人： Tetsuya Nakanishi ,  Masaaki Hirano

IPC分类号： C03B37/018

CPC分类号： C03B37/01823 ,  C03B2207/66 ,  Y02P40/57

摘要： Glass can be synthesized and deposited at a high rate by the inside CVD method using a plasma burner in a manner such that unconsolidated portions or bubbles are little generated. The method includes a step of depositing a glass film on the inner wall surface of a starting pipe. In a first aspect, temperature the pipe is controlled not to exceed (1800+100×d)° C., a temperature of (1100+100×d)° C. or higher being continued for 20 seconds or more at each point of the pipe, where d (mm) represents the wall thickness of the pipe. In a second aspect, the burner includes at least two inlets and has an inner diameter of 80 mm or more, and the deposition step is performed in the relationship, 150 mm/s

摘要翻译： 可以通过使用等离子体燃烧器的内部CVD方法以高速率合成和沉积玻璃，使得很少产生未固化的部分或气泡。 该方法包括在起始管的内壁表面上沉积玻璃膜的步骤。 在第一方面，管道的温度控制不超过（1800 + 100×d）℃，（1100 + 100×d）℃或更高的温度在管道的每个点处持续20秒以上，其中 d（mm）表示管道的壁厚。 在第二方面，燃烧器包括至少两个入口并且具有80mm或更大的内径，并且沉积步骤以150mm / s（引入燃烧器的气体的总流量） /（燃烧器的截面积）<600 mm / s。

公开(公告)号：US20070258717A1

公开(公告)日：2007-11-08

申请号：US11797212

申请日：2007-05-01

申请人： Masaaki Hirano ,  Tetsuya Nakanishi ,  Toshiaki Okuno ,  Masato Tanaka

发明人： Masaaki Hirano ,  Tetsuya Nakanishi ,  Toshiaki Okuno ,  Masato Tanaka

IPC分类号： H04J14/02

CPC分类号： G02F1/395 ,  G02B6/02028 ,  G02B6/02242 ,  G02B6/02252 ,  G02B6/02266 ,  G02B6/02285 ,  G02B6/03627 ,  G02B6/03644 ,  G02B6/0365 ,  G02B6/03666

摘要： An optical device and wavelength conversion method can selectively perform wavelength conversion of a probe lightwave. An optical fiber is suitable for them. The device 1 comprises (a) a pump light source 12 for outputting a pump lightwave having a wavelength of λpump and (b) an optical fiber 11 that guides the pump lightwave and a probe lightwave having a wavelength of λprobe and generates through a nonlinear optical phenomenon an idler lightwave having a newly produced wavelength of λidler that is in accordance with the wavelength λprobe. The wavelength λprobe dependence of the efficiency of the wavelength conversion has a main band including the wavelength λpump and a subband distinct from the main band. The probe lightwave included in the subband is guided in the optical fiber 11 to generate in it the idler lightwave having the wavelength λidler that is in accordance with the wavelength λprobe.

摘要翻译： 光学器件和波长转换方法可以选择性地执行探针光波的波长转换。 光纤适合它们。 装置1包括：（a）泵浦光源12，用于输出具有波长λλ泵的泵浦光波;以及（b）引导泵浦光波的光纤11和具有波长的探针光波 的λ＆lt;探针＆lt;＆gt;并且通过非线性光学现象产生具有根据波长λ探针。 波长转换效率的波长λ> probe has has has has has has has。。。。。。。。。。。。。。。。。。。。。。。。。。。。。 包括在子带中的探测光波在光纤11中被引导，以在其中产生具有与波长λ探针的波长相匹配的波长λ惰性的惰性光波。

公开(公告)号：US20070047962A1

公开(公告)日：2007-03-01

申请号：US11483979

申请日：2006-07-11

申请人： Masaaki Hirano ,  Tetsuya Nakanishi ,  Toshiaki Okuno

发明人： Masaaki Hirano ,  Tetsuya Nakanishi ,  Toshiaki Okuno

IPC分类号： H04B10/12

CPC分类号： G02B6/03666 ,  G02B6/02028 ,  G02B6/02242 ,  G02B6/02257 ,  G02B6/02271 ,  G02B6/0228 ,  G02B6/0281 ,  G02B6/03627 ,  G02B6/03644 ,  G02F1/365 ,  G02F2001/3528

摘要： This invention relates to an optical fiber and others having a structure for efficiently generating SC light while realizing high nonlinearity over a wide band. The optical fiber has at least a center core region, and an outside cladding region having a refractive index lower than that of the center core region and provided on an outer periphery of the center core region. The optical fiber has, as characteristics to light of a wavelength λ1 in a wavelength range of 1520 nm to 1620 nm, a chromatic dispersion of −2 ps/nm/km to +2 ps/nm/km, a dispersion slope of −0.009 ps/nm2/km to +0.009 ps/nm2/km, and a fourth-order dispersion of −1.8×10−4 ps/nm3/km to +1.8×10−4 ps/nm3/km.

摘要翻译： 本发明涉及一种具有用于在宽带上实现高非线性的同时有效地产生SC光的结构的光纤等。 该光纤至少具有中心纤芯区域和折射率低于中心纤芯区域的折射率的外包层区域，并且设置在中心纤芯区域的外周。 在1520nm至1620nm的波长范围内，作为波长λ1的光的特性，光纤具有-2ps / nm / km至+ 2ps / nm / km的色散，色散斜率为 - 0.009ps / nm 2 / km至+0.009ps / nm 2 / km，第四阶色散为-1.8×10 -4 / ps / nm 3 / km至+ 1.8×10 -4 ps / nm 3 / km。

公开(公告)号：US07045737B2

公开(公告)日：2006-05-16

申请号：US10780716

申请日：2004-02-19

申请人： Masashi Onishi ,  Masaaki Hirano ,  Tetsuya Nakanishi

发明人： Masashi Onishi ,  Masaaki Hirano ,  Tetsuya Nakanishi

IPC分类号： B23K9/00

CPC分类号： H05H1/30 ,  C03B23/043 ,  C03B23/207 ,  C03B29/02 ,  C03B37/0124 ,  C03B37/01815 ,  C03B37/01823 ,  Y02P40/57

摘要： A glass-processing method adjusts the range of the heating region according to the work piece and processing condition, and a glass-processing apparatus implements the method. The method incorporates the heating of a glass body with a thermal plasma torch comprising (a) a main body provided with a plurality of ports from which a gas issues and (b) a device for applying a high-frequency electric field to the gas fed into the main body. The method comprises the steps of (1) adjusting the plasma flame's size perpendicular to the center axis of the main body by controlling the flow rate of the gas fed into each port according to the size of the glass body, the processing condition, or both and (2) heating the glass body. The apparatus comprises (a) a thermal plasma torch for heating a glass body, comprising (a1) a main body provided with a plurality of ports from which a gas issues and (a2) a device for applying a high-frequency electric field to the gas fed into the main body and (b) a device for adjusting the flow rate of the gas fed into each port.

摘要翻译： 玻璃加工方法根据工件和加工条件调节加热区域的范围，玻璃加工装置实施该方法。 该方法包括用热等离子体焰炬加热玻璃体，其包括（a）主体，其设置有多个端口，气体从该端口发出，以及（b）用于将高频电场施加到气体馈送的装置 进入主体。 该方法包括以下步骤：（1）通过根据玻璃体的尺寸，加工条件或两者来控制进入每个端口的气体的流量来调节垂直于主体的中心轴的等离子体火焰的尺寸 和（2）加热玻璃体。 该装置包括：（a）用于加热玻璃体的热等离子体焰炬，包括（a1）设置有气体发生的多个端口的主体，以及（a2）用于将高频电场施加到 送入主体的气体和（b）用于调节供给到每个端口的气体的流量的装置。

公开(公告)号：US08676014B2

公开(公告)日：2014-03-18

申请号：US12903798

申请日：2010-10-13

申请人： Tetsuya Nakanishi ,  Masaaki Hirano ,  Tetsuya Haruna ,  Maki Ikechi

发明人： Tetsuya Nakanishi ,  Masaaki Hirano ,  Tetsuya Haruna ,  Maki Ikechi

IPC分类号： G02B6/02

CPC分类号： C03B37/02727 ,  C03B2203/19 ,  C03B2203/222 ,  G02B6/02 ,  G02B6/02366 ,  G02B6/03627 ,  G02B6/0365 ,  G02B6/03694

摘要： An optical fiber having excellent strength that can be manufactured at low cost, as well as a method for making such optical fiber, is provided. An optical fiber 1 is a silica-based optical fiber comprising a core 11, an optical cladding 12 surrounding the core 11, and a jacketing region 13 surrounding the optical cladding 12 and having a uniform composition throughout from the internal circumference to the outer circumference. A compressive strained layer having a residual compressive stress is provided at the outermost circumference of the jacketing region 13.

摘要翻译： 提供了具有可以低成本制造的优异强度的光纤以及制造这种光纤的方法。 光纤1是包括芯11，围绕芯11的光学包层12和围绕光学包层12并且具有从内周到外周均匀组成的护套区域13的二氧化硅基光纤。 在护套区域13的最外周设有具有残余压应力的压应变层。