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1. 发明授权

US08223323B2 Cutoff wavelength measuring method and optical communication system 有权
标题翻译：截止波长测量方法和光通信系统
公开(公告)号：US08223323B2
公开(公告)日：2012-07-17
申请号：US12750029
申请日：2010-03-30
申请人： Tetsuya Nakanishi , Masaaki Hirano , Takashi Sasaki
发明人： Tetsuya Nakanishi , Masaaki Hirano , Takashi Sasaki
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。

2. 发明申请

US20100247093A1 CUTOFF WAVELENGTH MEASURING METHOD AND OPTICAL COMMUNICATION SYSTEM 有权
标题翻译：切割波长测量方法和光通信系统
公开(公告)号：US20100247093A1
公开(公告)日：2010-09-30
申请号：US12750029
申请日：2010-03-30
申请人： Tetsuya Nakanishi , Masaaki Hirano , Takashi Sasaki
发明人： Tetsuya Nakanishi , Masaaki Hirano , Takashi Sasaki
IPC分类号： H04B10/08 , 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。

3. 发明申请

US20080212091A1 Light source unit and spectrum analyzer 审中-公开
标题翻译：光源单元和频谱分析仪
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
IPC分类号： G01J3/447 , H01S3/10
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。

4. 发明申请

US20090152475A1 Analyzer, Authenticity Judging Device, Authenticity Judging Method, and Underground Searching Method 审中-公开
标题翻译：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
IPC分类号： G21G5/00 , G02B6/00 , G06K9/74
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。

5. 发明申请

US20070175242A1 Method and device for producing optical fiber matrix 审中-公开
标题翻译：制造光纤矩阵的方法和装置
公开(公告)号：US20070175242A1
公开(公告)日：2007-08-02
申请号：US10590278
申请日：2005-02-23
申请人： Masaaki Hirano , Tetsuya Nakanishi , Takashi Sasaki , Taiichiro Yamashita
发明人： Masaaki Hirano , Tetsuya Nakanishi , Takashi Sasaki , Taiichiro Yamashita
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。

6. 发明申请

US20060016226A1 Glass-body-heating apparatus and production method of optical fiber preform incorporaing the apparatus 审中-公开
标题翻译：装置的玻璃体加热装置及其制造方法
公开(公告)号：US20060016226A1
公开(公告)日：2006-01-26
申请号：US11176676
申请日：2005-07-08
申请人： Tetsuya Nakanishi , Masashi Onishi , Takashi Sasaki , Masaaki Hirano , Nobuyuki Taira
发明人： Tetsuya Nakanishi , Masashi Onishi , Takashi Sasaki , Masaaki Hirano , Nobuyuki Taira
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。

7. 发明申请

US20090129409A1 Optical Fiber and Broadband Light Source 有权
标题翻译：光纤和宽带光源
公开(公告)号：US20090129409A1
公开(公告)日：2009-05-21
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： H01S3/30 , 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，在1300nm〜1500nm的波长范围内具有零色散波长和12mum2以下的有效面积的光纤12输出波长带宽扩展至1000nm以上的超连续光。

8. 发明申请

US20080252880A1 Device for inspecting hollow-body cavity 审中-公开
标题翻译：中空体腔检查装置
公开(公告)号：US20080252880A1
公开(公告)日：2008-10-16
申请号：US12081241
申请日：2008-04-11
申请人： Masato Tanaka , Toshiaki Okuno , Masaaki Hirano , Tetsuya Nakanishi
发明人： Masato Tanaka , Toshiaki Okuno , Masaaki Hirano , Tetsuya Nakanishi
IPC分类号： G01N21/84
CPC分类号： A61B5/0075 , A61B5/0066 , A61B5/0084 , A61B5/0086 , A61B5/02007 , H04N5/2354 , H04N2005/2255
摘要： Provided is a hollow-body cavity inspection device for inspecting a hollow-body cavity filled with a limited-wavelength transparent medium. The hollow-body cavity inspection device is capable of multifunction in addition to acquisition of an image and comprises: (1) one or more light sources for emitting two or more inspection light beams of different characteristics; (2) a light transmitting member for transmitting the two or more inspection light beams to an inspection objective in a hollow-body cavity and transmitting the reflected/scattered light from the inspection objective to the outside of the hollow-body; and (3) an inspection data formation means for receiving the reflected/scattered light and forming inspection information therefrom, wherein the two or more inspection light beams include first inspection light having its main wavelength bandwidth at the transmittable wavelength band, and the inspection data formation means comprises a plurality of means for outputting inspection information differing according to each of the two or more inspection light beams.
摘要翻译：提供一种用于检查填充有有限波长透明介质的中空体腔的中空体腔检查装置。中空体腔检查装置除了获取图像之外还能够具有多功能，并且包括：（1）用于发射具有不同特性的两个或更多个检查光束的一个或多个光源; （2）一种透光构件，用于将两个或更多个检查光束传输到中空体腔中的检查物镜，并将来自检查物镜的反射/散射光传输到中空体的外部; （3）检查数据形成单元，其接收反射/散射光并形成检查信息，其中两个或更多个检查光束包括其可发射波长带的主波长带宽的第一检查光和检测数据形成装置包括用于输出根据两个或更多个检查光束中的每一个不同的检查信息的多个装置。

9. 发明申请

US20060117798A1 Method of manufacturing an optical fiber preform 审中-公开
标题翻译：制造光纤预制棒的方法
公开(公告)号：US20060117798A1
公开(公告)日：2006-06-08
申请号：US11293160
申请日：2005-12-05
申请人： Masaaki Hirano , Tetsuya Nakanishi
发明人： Masaaki Hirano , Tetsuya Nakanishi
IPC分类号： C03B37/023
CPC分类号： C03B23/055 , C03B37/01892 , Y02P40/57
摘要： A method of manufacturing an optical fiber preform is provided, with which an increase of PMD and transmission loss of an optical fiber can be restrained. The method of manufacturing an optical fiber preform includes a process of heating a glass pipe and comprises the steps of (1) supporting the glass pipe at both ends thereof such that the longitudinal axis of the glass pipe becomes substantially horizontal and (2) heating the glass pipe with a heat source, wherein the bending moment at the supporting end of the glass pipe which is treated as a cantilever is 6 Nm or more, and the displacement of the heated region of the glass pipe in the heating process is equal to or less than 1.5 mm.
摘要翻译：提供一种制造光纤预制件的方法，可以抑制PMD的增加和光纤的传输损耗的增加。制造光纤预制棒的方法包括加热玻璃管的方法，包括以下步骤：（1）在玻璃管的两端支撑玻璃管，使得玻璃管的纵向轴线基本上水平，并且（2）加热具有热源的玻璃管，其中被处理为悬臂的玻璃管的支撑端处的弯矩为6Nm以上，加热过程中玻璃管的加热区域的位移等于或等于小于1.5毫米。

10. 发明申请

US20100064733A1 GLASS TUBE PROCESSING METHOD, APPARATUS AND GLASS TUBE 失效
标题翻译：玻璃管加工方法，装置和玻璃管
公开(公告)号：US20100064733A1
公开(公告)日：2010-03-18
申请号：US12622056
申请日：2009-11-19
申请人： Tetsuya Nakanishi , Masashi Onishi , Tomoyuki Yokokawa , Masaaki Hirano , Nobuyuki Taira
发明人： Tetsuya Nakanishi , Masashi Onishi , Tomoyuki Yokokawa , Masaaki Hirano , Nobuyuki Taira
IPC分类号： C03B37/07
CPC分类号： C03B23/043 , C03B37/01242 , C03B37/01257 , C03B37/01815
摘要： In a glass processing method according to the invention, in the case of performing chemical vapor deposition or diameter shrinkage of a substrate glass tube G by relatively moving a heating furnace 20 comprising a heating element 21 for annularly enclosing the circumference of the substrate glass tube in a longitudinal direction of the substrate glass tube G with respect to the substrate glass tube G in which an outer diameter is 30 mm or more and a wall thickness is 3 mm or more and is less than 15 mm and an ovality of the outer diameter is 1.0% or less using a glass processing apparatus 1, a temperature of at least one of the heating element 21 and the substrate glass tube G is measured and the amount of heat generation of the heating element 21 is adjusted based on the measured temperature.
摘要翻译：在根据本发明的玻璃加工方法中，在通过相对移动包括加热元件21的加热炉20进行化学气相沉积或直径收缩的情况下，用于将基板玻璃管的圆周环形地包围基板玻璃管G相对于外径为30mm以上且壁厚为3mm以上且小于15mm的基板玻璃管G的纵向方向，外径的椭圆度为使用玻璃处理装置1为1.0％以下，测量加热元件21和基板玻璃管G中的至少一个的温度，并根据测量温度来调节加热元件21的发热量。

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