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公开(公告)号：US20080212091A1
公开(公告)日：2008-09-04
申请号：US12010212
申请日：2008-01-22
申请人： Masato Tanaka , Tetsuya Nakanishi , Tetsuya Haruna , Masaaki Hirano , Toshiaki Okuno , Takashi Sasaki , Masashi Onishi
发明人： Masato Tanaka , Tetsuya Nakanishi , Tetsuya Haruna , Masaaki Hirano , Toshiaki Okuno , Takashi Sasaki , Masashi Onishi
CPC分类号： G01J3/10 , G01J3/02 , G01J3/0205 , G01J3/0208 , G01J3/021 , G01J3/0218 , G01J3/0224 , G01J3/0229 , G01J3/0297 , G01J3/06 , G01J3/14 , G01J3/1895 , G01J3/26 , G01J3/433 , G01J2003/065
摘要： A light source unit and a spectrum analyzer are provided in which the influence of interference can be reduced under conditions where light is separated into spectral components. A spectrum analyzer 1 is equipped with a light source unit 2 for irradiating light onto sample A, a detector unit 3 for detecting the light reflected, scattered, or transmitted from the sample A, and a sample stage 4 on which a sample A is placed. A wide band light source 20 generates wide band light P1 such as supercontinuum light (SC light). Also, the light source unit 2 has an interference suppressing means for suppressing the interference of each wavelength component of the wide band light P1.
摘要翻译： 提供了一种光源单元和频谱分析仪，其中在将光分离成光谱分量的条件下可以降低干扰的影响。 频谱分析仪1具备用于向样品A照射光的光源单元2，检测从样品A反射，散射或透射的光的检测器单元3和放置样品A的样品台4 。 宽带光源20产生诸如超连续光（SC light）的宽带光P 1。 此外，光源单元2具有用于抑制宽带光P 1的每个波长分量的干扰的干扰抑制装置。
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公开(公告)号：US08223323B2
公开(公告)日：2012-07-17
申请号：US12750029
申请日：2010-03-30
IPC分类号： G01N21/00
CPC分类号： G01M11/33
摘要： A method includes a first step of joining a multimode fiber to a first end of an optical fiber being a specimen, allowing light to propagate from the multimode fiber to the specimen, measuring an intensity of light from a second end of the specimen, and determining a first power spectrum; a second step of joining the multimode fiber to a first end of a reference fiber having bending loss higher than that of the specimen, allowing light to propagate from the multimode fiber to the reference fiber, measuring an intensity of light from a second end of the reference fiber, and determining a second power spectrum; a third step of determining a difference spectrum by subtracting the second power spectrum from the first power spectrum; and a fourth step of determining a higher-order mode cutoff wavelength of the specimen on the basis of a shape of the difference spectrum.
摘要翻译： 一种方法包括将多模光纤连接到作为样本的光纤的第一端的第一步骤，允许光从多模光纤传播到样品，测量来自样品的第二端的光的强度，以及确定 第一功率谱; 将多模光纤连接到具有高于样品的弯曲损耗的参考光纤的第一端的第二步骤，允许光从多模光纤传播到参考光纤，测量来自第二端的光的强度 参考光纤，并确定第二功率谱; 第三步骤，通过从第一功率谱中减去第二功率谱来确定差分谱; 以及基于差分光谱的形状来确定样本的高次模截止波长的第四步骤。
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公开(公告)号：US20100247093A1
公开(公告)日：2010-09-30
申请号：US12750029
申请日：2010-03-30
CPC分类号： G01M11/33
摘要： A method includes a first step of joining a multimode fiber to a first end of an optical fiber being a specimen, allowing light to propagate from the multimode fiber to the specimen, measuring an intensity of light from a second end of the specimen, and determining a first power spectrum; a second step of joining the multimode fiber to a first end of a reference fiber having bending loss higher than that of the specimen, allowing light to propagate from the multimode fiber to the reference fiber, measuring an intensity of light from a second end of the reference fiber, and determining a second power spectrum; a third step of determining a difference spectrum by subtracting the second power spectrum from the first power spectrum; and a fourth step of determining a higher-order mode cutoff wavelength of the specimen on the basis of a shape of the difference spectrum.
摘要翻译： 一种方法包括将多模光纤连接到作为样本的光纤的第一端的第一步骤，允许光从多模光纤传播到样品，测量来自样品的第二端的光的强度，以及确定 第一功率谱; 将多模光纤连接到具有高于样品的弯曲损耗的参考光纤的第一端的第二步骤，允许光从多模光纤传播到参考光纤，测量来自第二端的光的强度 参考光纤，并确定第二功率谱; 第三步骤，通过从第一功率谱中减去第二功率谱来确定差分谱; 以及基于差分光谱的形状来确定样本的高次模截止波长的第四步骤。
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4.发明申请Analyzer, Authenticity Judging Device, Authenticity Judging Method, and Underground Searching Method 审中-公开分析仪，真品鉴定装置，真品鉴定法和地下检索方法公开(公告)号：US20090152475A1
公开(公告)日：2009-06-18
申请号：US11887471
申请日：2007-01-19
申请人： Takashi Sasaki , Kazumasa Makihara , Toshiaki Okuno , Masashi Onishi , Masaaki Hirano , Tetsuya Nakanishi
发明人： Takashi Sasaki , Kazumasa Makihara , Toshiaki Okuno , Masashi Onishi , Masaaki Hirano , Tetsuya Nakanishi
CPC分类号： G01N21/359 , G01J3/10 , G01N21/643 , G01N2201/08 , G02F1/35 , G02F2001/3528
摘要： The present invention relates to an analyzing apparatus and the like having a structure for enabling spectrometry and the like up to a longer frequency region while being excellent in practicality. The analyzing apparatus comprises a light source section and a light-detecting section. The light source section includes a seed light source emitting laser light, and a solid highly nonlinear optical fiber generating SC light in response to the input of the laser light, and thereby emitting the SC light as irradiation light to an object. The light-detecting section detects light to be detected from the object irradiated with the irradiation light. Here, the seed light source in the light source section emits pulsed light having a center wavelength within the range of 1.3 μm to 1.8 μm.
摘要翻译： 本发明涉及一种分析装置等，其具有能够进行光谱测定等直到较长频率区域的结构，同时实用性优异。 分析装置包括光源部分和光检测部分。 光源部分包括发射激光的种子光源和响应于激光的输入而产生SC光的固体高度非线性光纤，从而将SC光作为照射光发射到物体。 光检测部分从照射光照射的物体中检测待检测的光。 这里，光源部中的种子光源发射中心波长在1.3μm〜1.8μm范围内的脉冲光。
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公开(公告)号：US20070175242A1
公开(公告)日：2007-08-02
申请号：US10590278
申请日：2005-02-23
IPC分类号： C03B37/07 , C03B37/018 , C03C25/00
CPC分类号： C03B37/01861 , C03B37/01807 , C03B37/01846 , Y02P40/57
摘要： A method and apparatus capable of suppressing fluctuation in shrinkage of a silica glass pipe such that an optical fiber preform uniform in the longitudinal direction can be produced are provided. In the step of depositing a glass layer in the silica glass pipe, at least the amount of the exhaust gas or buffering gas is feedback-controlled, and at least other one of them is pattern-controlled according to a flow rate pattern corresponding to heating positions on the silica glass pipe. The apparatus includes two or more in total of an exhaust portion and a buffering gas inlet portion, a heat source, a position detecting means for detecting a heating position, a first control means for controlling at least the amount of the exhaust gas or buffering gas according a flow rate pattern corresponding to heating positions, and second control means for feedback-controlling at least other one of them.
摘要翻译： 提供了能够抑制石英玻璃管收缩波动的方法和装置，使得可以制造沿长度方向均匀的光纤预制件。 在石英玻璃管中沉积玻璃层的步骤中，至少排气量或缓冲气体的量被反馈控制，并且至少其中之一根据对应于加热的流量模式进行图案化控制 石英玻璃管上的位置。 该装置总共包括两个或更多个排气部分和缓冲气体入口部分，热源，用于检测加热位置的位置检测装置，用于至少控制排气量或缓冲气体量的第一控制装置 根据对应于加热位置的流量模式，以及第二控制装置，用于对至少其中之一进行反馈控制。
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6.发明申请公开(公告)号：US20060016226A1
公开(公告)日：2006-01-26
申请号：US11176676
申请日：2005-07-08
IPC分类号： C03B37/029
CPC分类号： C03B37/01815 , C03B23/043 , C03B37/01257
摘要： An apparatus can heat a glass body with high efficiency, and a method incorporating the apparatus produces an optical fiber preform. The apparatus has (a) a heating element that has a nearly cylindrical shape and that heats a glass body inserted into the heating element and (b) an infrared reflector that is placed at a position next to each of the openings of the heating element, that surrounds the glass body together with the heating element, and that has an inner surface having a spectral emissivity of at most 0.70 in a wavelength range of 4 to 12 μm.
摘要翻译： 一种装置可以高效率地加热玻璃体，并且结合该装置的方法产生光纤预制件。 该装置具有（a）加热元件，其具有近似圆筒形状并加热插入到加热元件中的玻璃体，和（b）放置在加热元件的每个开口旁边的位置处的红外反射器， 其与加热元件一起围绕玻璃体，并且具有在4至12μm的波长范围内具有至多0.70的光谱发射率的内表面。
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7.发明授权公开(公告)号：US07894697B2
公开(公告)日：2011-02-22
申请号：US11976110
申请日：2007-10-22
CPC分类号： G02B6/03644 , C03B2203/22 , C03B2203/29 , C03B2203/36 , G02B6/02261 , G02B6/03627 , G02B6/29377
摘要： The present invention relates to an optical fiber which has a structure for further increasing an FOM (=|dispersion|/loss) and which can be applied to a dispersion compensation module. The optical fiber is mainly composed of silica glass and has a core region including a center of an optical axis, a depressed region surrounding the core region, a ring region surrounding the depressed region, and a cladding region surrounding the ring region and doped with F. As compared with the refractive index of pure silica glass, a relative refractive index difference of the core region is greater than 2% but less than 3%, a relative refractive index difference of the depressed region is −1% or more but −0.5% or less, a relative refractive index difference of the ring region is 0.01% or more but 0.24% or less, and a relative refractive index difference of the cladding region is −0.3% or more but −0.1% or less. The FOM at the wavelength of 1550 nm is 250 ps/nm/dB or more.
摘要翻译： 本发明涉及具有进一步增加FOM（= |色散| /损耗）的结构的光纤，并且可以应用于色散补偿模块。 该光纤主要由石英玻璃构成，具有包括光轴中心，围绕芯区域的凹陷区域，围绕该凹陷区域的环形区域和围绕该环形区域并且掺杂有F的包层区域的芯区域 与纯石英玻璃的折射率相比，芯区域的相对折射率差大于2％但小于3％，凹陷区域的相对折射率差为-1％以上-0.5 ％以下，环区域的相对折射率差为0.01％以上且0.24％以下，包层区域的相对折射率差为-0.3％以上-0.1％以下。 1550nm波长的FOM为250ps / nm / dB以上。
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公开(公告)号：US07486862B2
公开(公告)日：2009-02-03
申请号：US10556946
申请日：2004-05-18
申请人： Yuichi Ohga , Masashi Onishi , Osamu Kasuu , Shuichiro Kato , Toru Adachi , Takashi Sasaki , Masaaki Hirano
发明人： Yuichi Ohga , Masashi Onishi , Osamu Kasuu , Shuichiro Kato , Toru Adachi , Takashi Sasaki , Masaaki Hirano
IPC分类号： G02B6/02 , C03B37/023
CPC分类号： C03B37/01228 , C03B37/01211 , C03B37/01231 , C03B37/01248 , C03B37/02754 , Y02P40/57
摘要： A core rod is inserted into a cladding pipe, moisture in a space between the core rod and the cladding pipe is removed, and an optical fiber is drawn while the space is connected to a dry-gas atmosphere and/or being decompressed and while the core rod and the cladding pipe are being unified with each other. Alternatively, the core rod is inserted into the cladding pipe, and an optical fiber is drawn from one end while moisture on the surface of the core rod and the internal surface of the cladding pipe is being removed. Accordingly, a high quality optical fiber is manufactured with good productivity.
摘要翻译： 将芯棒插入包层管中，去除芯棒和包层管之间的空间中的水分，并且在空间连接到干燥气体气氛和/或减压的同时拉出光纤，同时 芯棒和包层管彼此统一。 或者，将芯棒插入到包层管中，并且从一端抽出光纤，同时除去芯棒的表面和包层管的内表面上的水分。 因此，以高生产率制造高品质的光纤。
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9.发明授权公开(公告)号：US07286740B2
公开(公告)日：2007-10-23
申请号：US11544007
申请日：2006-10-06
CPC分类号： G02B6/03644 , C03B2203/22 , C03B2203/29 , C03B2203/36 , G02B6/02261 , G02B6/03627 , G02B6/29377
摘要： The present invention relates to an optical fiber which has a structure for further increasing an FOM (=|dispersion|/loss) and which can be applied to a dispersion compensation module. The optical fiber is mainly composed of silica glass and has a core region including a center of an optical axis, a depressed region surrounding the core region, a ring region surrounding the depressed region, and a cladding region surrounding the ring region and doped with F. As compared with the refractive index of pure silica glass, a relative refractive index difference of the core region is 3% or more but 4% or less, a relative refractive index difference of the depressed region is −1% or more but −0.5% or less, a relative refractive index difference of the ring region is 0.01% or more but 0.24% or less, and a relative refractive index difference of the cladding region is −0.3% or more but −0.1% or less. The FOM at the wavelength of 1550 nm is 250 ps/nm/dB or more.
摘要翻译： 本发明涉及具有进一步增加FOM（= |色散| /损耗）的结构的光纤，并且可以应用于色散补偿模块。 该光纤主要由石英玻璃构成，具有包括光轴中心，围绕芯区域的凹陷区域，围绕该凹陷区域的环形区域和围绕该环形区域并且掺杂有F的包层区域的芯区域 与纯石英玻璃的折射率相比，芯区域的相对折射率差为3％以上且4％以下，凹陷区域的相对折射率差为-1％以上-0.5 ％以下，环区域的相对折射率差为0.01％以上且0.24％以下，包层区域的相对折射率差为-0.3％以上-0.1％以下。 1550nm波长的FOM为250ps / nm / dB以上。
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10.发明授权Optical fiber preform producing method, optical fiber production method, and optical fiber 失效光纤预制棒生产方法，光纤生产方法和光纤公开(公告)号：US07068901B2
公开(公告)日：2006-06-27
申请号：US10494278
申请日：2003-04-16
申请人： Masaaki Hirano , Eiji Yanada , Tomoyuki Yokokawa , Takashi Sasaki
发明人： Masaaki Hirano , Eiji Yanada , Tomoyuki Yokokawa , Takashi Sasaki
IPC分类号： G02B6/22
CPC分类号： G02B6/03688 , C03B37/01211 , C03B37/0124 , C03B2203/22 , C03B2203/29 , C03B2203/36 , G02B6/02271 , G02B6/03644 , G02B6/03666 , Y02P40/57
摘要： An optical fiber preform comprises a central core portion having a maximal value Nc of refractive index in the center, and outside the central core portion, comprising at least a depressed portion having a minimal value Nd of refractive index, a ring portion having a maximal value Nr of refractive index and an outside cladding layer having a maximal value No of refractive index. The optical fiber preform satisfies a relation of Nc≧Nr>No>Nd among the values of refractive index. A method of the optical fiber preform comprises fabricating a glass rod by inserting a rod containing at least the central core portion into a pipe containing at least the depressed portion and integrating them, fabricating a glass pipe having the ring portion, and fabricating a vitreous body by integrating the glass rod and the glass pipe by collapsing after inserting the glass rod into the glass pipe.
摘要翻译： 光纤预制件包括在中心具有折射率最大值Nc并且在中心芯部分外部的中心芯部分，至少包括具有最小折射率Nd的凹陷部分，具有最大值的环部分 折射率Nr和折射率最大值No的外包层。 光纤预制棒满足折射率值之间的Nc> = Nr> No> Nd的关系。 光纤预制棒的方法包括通过将至少包含中心纤芯部分的棒插入到至少包含凹陷部分并将其集成的管中来制造玻璃棒，制造具有该环部分的玻璃管，以及制造玻璃体 通过在将玻璃棒插入玻璃管中之后通过塌缩来集成玻璃棒和玻璃管。
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