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1. 发明专利

JP2007298335A Characteristic evaluation method, device and program of single mode optical fiber 有权
标题翻译：特征评估方法，单模光纤的器件和程序
公开(公告)号：JP2007298335A
公开(公告)日：2007-11-15
申请号：JP2006125286
申请日：2006-04-28
申请人： Nippon Telegr & Teleph Corp , Osaka Prefecture Univ , 公立大学法人大阪府立大学 , 日本電信電話株式会社
发明人： NAKAJIMA KAZUHIDE , OHASHI MASAHARU
IPC分类号： G01M11/02
摘要： PROBLEM TO BE SOLVED: To provide a characteristic evaluation device of a single mode optical fiber capable of evaluating nondestructively and highly accurately a distribution characteristic in the longitudinal direction between connected optical fibers, in an optical fiber transmission path constituted of a plurality of single mode optical fibers.
SOLUTION: This device has a back-scattering light intensity measuring device 11 for measuring back-scattering light intensity S (λ, z) on a position z of the single mode optical fiber 13 on both ends, when pulse light having the wavelength λ is allowed to enter the single mode optical fiber 13 having an optional length L; and a back-scattering light intensity waveform analyzer 12 for operating a specific refractive index difference Δ(z) on an optional position z of the single mode optical fiber 13 by using a normalization structure inconsistency loss component In (λ, z) on the position z of the single mode optical fiber 13 operated from the back-scattering light intensity S (λ, z), and a mode field diameter 2W (λ, z
0 ) and the specific refractive index difference Δ(z
0 ) at its optional reference point z
0 .
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种能够以非破坏性和高精度评估连接的光纤之间的纵向分布特性的单模光纤的特性评估装置，在由多个单模光纤。解决方案：该装置具有背散射光强度测量装置11，用于测量两端单模光纤13位置z处的反散射光强度S（λ，z），当具有允许波长λ进入具有任选长度L的单模光纤13; 以及用于通过使用位置上的归一化结构不一致性损耗分量In（λ，z）来操作单模光纤13的可选位置z上的特定折射率差Δ（z）的后向散射光强度波形分析器12 （λ，z）和模场直径2W（λ，z 0 ）和比折射率差Δ（ z 0 ）在其可选参考点z 0 。版权所有（C）2008，JPO＆INPIT

2. 发明专利

JP2012189502A Evaluation device of optical fiber and evaluation method thereof 审中-公开
标题翻译：光纤的评估装置及其评估方法
公开(公告)号：JP2012189502A
公开(公告)日：2012-10-04
申请号：JP2011054480
申请日：2011-03-11
申请人： Kansai Electric Power Co Inc:The , Osaka Prefecture Univ , 公立大学法人大阪府立大学 , 関西電力株式会社
发明人： YAMASHITA IKUO , OHASHI MASAHARU
IPC分类号： G01M11/00 , G01M11/02
摘要： PROBLEM TO BE SOLVED: To provide a technique to enable wavelength characteristics of optical loss of an optical fiber to be evaluated easily and in a short time.SOLUTION: Light sources 21-2n generate a plurality of optical pulses with different wavelengths at different timings by delay devices 41 and 42, .... The plurality of optical pulses are incident to an optical fiber 1 after wavelength-multiplexed by a wavelength multiplexer 5. A signal processing part 8 separates a signal from a receiver 6 receiving returned optical pulses Bn-B1 by a time slot, and calculates optical loss for every wavelength in a target section of the optical fiber. Further, the signal processing part 8 estimates the wavelength spectrum of the optical loss by interpolating the wavelength characteristics using a reference curve (a reference spectrum of optical loss).
摘要翻译：要解决的问题：提供使光纤的光损耗的波长特性容易且在短时间内被评估的技术。光源21-2n通过延迟器件41,42,4 ...在不同的定时产生具有不同波长的多个光脉冲。多个光脉冲经波分复用后入射到光纤1 波长多路复用器5.信号处理部分8将接收返回的光脉冲Bn-B1的接收机6的信号分离一个时隙，并计算光纤的目标部分中的每个波长的光损耗。此外，信号处理部8使用参考曲线（光损耗的参考光谱）内插波长特性来估计光损耗的波长谱。版权所有（C）2013，JPO＆INPIT

3. 发明专利

JP2012163376A Water pressure measurement device 审中-公开
标题翻译：水压测量装置
公开(公告)号：JP2012163376A
公开(公告)日：2012-08-30
申请号：JP2011022174
申请日：2011-02-03
申请人： Osaka Prefecture Univ , 公立大学法人大阪府立大学
发明人： OHASHI MASAHARU
IPC分类号： G01L11/02
摘要： PROBLEM TO BE SOLVED: To provide a water pressure measurement device capable of sensitively measuring water pressure using a sensor having a simple structure without requiring a complicated pressure transmission mechanism.SOLUTION: The present invention has: a light source 11 on one side of an optical fiber 10; a light detection section 12 on the other side of the optical fiber 10; and a water pressure sensor section 13 in a middle region of the optical fiber 10 for detecting water pressure. The water pressure sensor section 13 is a light transmissive type LPFG (long period fiber grating) having: a pressure sensitive section 10a made of the optical fiber; a rod-shaped grooved member 15 which has a surface with periodical grooves thereon and contacts with the optical fiber of the pressure sensitive section through the grooved surface in the axial direction; and a fiber pressure welding member 16 which fixes the pressure sensitive section 10a on the grooved member 15 so that the pressure sensitive section 10a is welded by pressure on the grooved surface. Because of the LPFG, the water pressure sensor section 13 enables an attenuation amount of a specific wavelength to be changed depending on water pressure.
摘要翻译：要解决的问题：提供一种能够使用具有简单结构的传感器灵敏地测量水压的水压测量装置，而不需要复杂的压力传递机构。解决方案：本发明具有：在光纤10一侧的光源11; 光纤10的另一侧的光检测部12; 以及用于检测水压的光纤10的中间区域的水压传感器部13。水压传感器部13是具有由光纤制成的压敏部10a的透光型LPFG（长周期光纤光栅）杆状开槽部件15，其表面上具有周期性的槽，并且在轴向上通过带槽表面与压敏部分的光纤接触; 以及将压敏部10a固定在带槽部15上的纤维压接部件16，使得压敏部10a通过压力焊接在开槽面上。由于LPFG，水压传感器部13能够使特定波长的衰减量根据水压而变化。版权所有（C）2012，JPO＆INPIT

4. 发明专利

JP2009276287A Raman gain efficiency measurement method and device 审中-公开
标题翻译：拉曼增益效率测量方法和装置
公开(公告)号：JP2009276287A
公开(公告)日：2009-11-26
申请号：JP2008129829
申请日：2008-05-16
申请人： Kansai Electric Power Co Inc:The , Osaka Prefecture Univ , 公立大学法人大阪府立大学 , 関西電力株式会社
发明人： OJI KYOICHI , YAMASHITA IKUO , OHASHI MASAHARU
IPC分类号： G01M11/02 , G02F1/35 , G02F1/383
摘要： PROBLEM TO BE SOLVED: To provide a method for accurately measuring Raman gain efficiency and a device for executing the method. SOLUTION: This Raman gain efficiency measurement device 100 includes an OTDR device 1, a wavelength filter 2, a WDM (wavelength multiplexing) couplers 3, 5, an exciting light source 4, a power meter 6, a controller 7, and an output device 8. The OTDR device 1, the wavelength filter 2, the WDM coupler 3, and the exciting light source 4 are provided to one end of a test fiber 10, and the WDM coupler 5 and the power meter 6 are provided to another end of the test fiber 10. The controller 7 performs a reflection process such that the detection result of the intensity of excited light by the power meter 6 is reflected in at least one of measurement of return light intensity by the OTDR device 1, and Raman gain efficiency calculation. Based on the processed result, the OTDR measurement of the Raman gain efficiency calculation is performed. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种精确测量拉曼增益效率的方法和用于执行该方法的装置。解决方案：该拉曼增益效率测量装置100包括OTDR器件1，波长滤波器2，WDM（波长多路复用）耦合器3,5，激励光源4，功率计6，控制器7和输出装置8.将OTDR装置1，波长滤波器2，WDM耦合器3和激励光源4设置在测试光纤10的一端，并且将WDM耦合器5和功率计6设置到测试光纤10的另一端。控制器7进行反射处理，使得功率计6的激发光强度的检测结果反映在OTDR器件1的返回光强度的测量中的至少一个中，以及拉曼增益效率计算。根据处理结果，进行拉曼增益效率计算的OTDR测量。版权所有（C）2010，JPO＆INPIT

5. 发明专利

JP2010008900A Long-period fiber grating device 审中-公开
标题翻译：长周期光纤光栅设备
公开(公告)号：JP2010008900A
公开(公告)日：2010-01-14
申请号：JP2008170614
申请日：2008-06-30
申请人： Osaka Prefecture Univ , 公立大学法人大阪府立大学
发明人： OHASHI MASAHARU
IPC分类号： G02B6/02 , G02B5/18 , G02B6/00
摘要： PROBLEM TO BE SOLVED: To provide a long-period fiber grating of a small size. SOLUTION: The long-period fiber grating device includes an optical fiber 11, a grooved support 12 which has grooves of a periodic structure formed therein and makes the grooves of the periodic structure abut along the axial direction of the optical fiber, a grooveless support 13 which has a flat external surface and makes the flat external surface abut on the optical fiber along its axial direction. and a tubular fiber pressure contact member 14 which holds the optical fiber pinched by the grooved support and the grooveless support, and fixes the optical fiber integrally in a pressure contact state. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供小尺寸的长周期光纤光栅。解决方案：长周期光纤光栅装置包括光纤11，具有形成在其中的具有周期性结构的槽的带槽支撑件12，并使周期性结构的槽沿着光纤的轴向抵接，具有平坦的外表面并使平坦的外表面沿着其轴向抵接在光纤上的无槽支撑件13。以及管状纤维压力接触构件14，其保持由槽支撑件和无沟槽支撑件夹持的光纤，并且将光纤在压力接触状态下一体地固定。版权所有（C）2010，JPO＆INPIT

6. 发明专利

JP2009257840A Mode coupling evaluating device and mode-coupling evaluation method 有权
标题翻译：模式耦合评估装置和模式耦合评估方法
公开(公告)号：JP2009257840A
公开(公告)日：2009-11-05
申请号：JP2008105035
申请日：2008-04-14
申请人： Osaka Prefecture Univ , Yazaki Corp , 公立大学法人大阪府立大学 , 矢崎総業株式会社
发明人： WAKABAYASHI TOMOTAKA , FURUKAWA SHINICHI , NAKAZONO AKIMITSU , TSUCHIYA KAZUHARU , SHIBATA NOBURU , MIZUGUCHI HIDEAKI , OHASHI MASAHARU
IPC分类号： G01M11/02
摘要： PROBLEM TO BE SOLVED: To provide a technique for improving the accuracy of the evaluation of the production process, the characteristics and the like, of an optical cable.
SOLUTION: In a mode-coupling evaluation device 10, an interferometer 14 interferes a linearly-polarized light excited to BF 13 with a mode coupled linearly-polarized light. A optical path limiting device 15 generates an optical path difference between the excited linearly-polarized light and mode coupled linearly-polarized light at the interferometer 14. A light receiver 16 detects an interfering light and performs O/E conversion. An optical modulator 17 modulates the interfering light. A mode coupling coefficient calculation device 19 obtains a power spectrum to the longitudinal distribution of the signal of the interfering light, between the excited linearly-polarized light and the mode coupled linearly-polarized light based on the signal output from a signal processing-recording device 18, and calculates the spatial frequency dependence of the mode-coupling coefficient.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于提高光缆的制造工艺的评价精度，特性等的技术。解决方案：在模式耦合评估装置10中，干涉仪14以模式耦合的线偏振光干扰激发到BF 13的线性偏振光。光路限制装置15在干涉仪14处产生激发的线性偏振光和模式耦合的线偏振光之间的光程差。光接收器16检测干涉光并执行O / E转换。光调制器17调制干涉光。模式耦合系数计算装置19基于从信号处理记录装置输出的信号，获得激励的线性偏振光和模式耦合的线偏振光之间的干涉光的信号的纵向分布的功率谱并计算模式耦合系数的空间频率依赖性。版权所有（C）2010，JPO＆INPIT

7. 发明专利

JP2014041338A Optical fiber, and optical transmission line 有权
标题翻译：光纤和光传输线
公开(公告)号：JP2014041338A
公开(公告)日：2014-03-06
申请号：JP2013125999
申请日：2013-06-14
申请人： Fujikura Ltd , 株式会社フジクラ , Osaka Prefecture Univ , 公立大学法人大阪府立大学
发明人： MARUYAMA RYO , KUWAKI NOBUO , MATSUO SHOICHIRO , OHASHI MASAHARU
IPC分类号： G02B6/028
CPC分类号： G02B6/0281 , G02B6/02047 , G02B6/02214 , G02B6/03627 , G02B6/4401
摘要： PROBLEM TO BE SOLVED: To provide a two-mode optical fiber having a mode dispersion characteristic of Δτ>0 and dΔτ/dλ>0.SOLUTION: An optical fiber 1 comprises: an inner core 111 having refractive index distribution of an α-th power type; an outer core 112 having a refractive index n1'; and a clad 12 having a refractive index n2 (n1'
摘要翻译：要解决的问题：提供具有＆Dgr;τ> 0和d＆Dgr;τ/dλ> 0的模式色散特性的双模光纤。解决方案：光纤1包括：折射率分布为 α型功率型; 具有折射率n1'的外芯112; 和折射率n2（n1'

8. 发明专利

JP2009068877A Evaluation method and evaluation device of raman gain efficiency distribution of single mode optical fiber transmission line 审中-公开
标题翻译：单模光纤传输线拉曼效率分布评估方法与评估装置
公开(公告)号：JP2009068877A
公开(公告)日：2009-04-02
申请号：JP2007235074
申请日：2007-09-11
申请人： Osaka Prefecture Univ , 公立大学法人大阪府立大学
发明人： OHASHI MASAHARU
IPC分类号： G01M11/02 , G01M11/00 , G02F1/35
摘要： PROBLEM TO BE SOLVED: To provide an evaluation method and an evaluation device of a Raman gain efficiency distribution of a single mode optical fiber capable of evaluating simply from one side, the Raman gain efficiency distribution of an optical fiber transmission line constituted of the single mode optical fiber.
SOLUTION: This device has a back scattered light intensity measuring device 11 for measuring the back scattered light intensity S(λ, z, P
P ) on an optional position z of the single mode optical fiber 16 when excitation light power P
P having a wavelength λ
P and OTDR light having a wavelength λ are coupled together by a WDM coupler and allowed to enter a single mode optical fiber transmission line 16, and S(λ, z, 0) in the case of no excitation power; and a back scattered light intensity waveform analyzer 12 for operating the Raman gain efficiency of the single mode optical fiber 16 by using a first-order differential coefficient at the position z and a loss coefficient of an excitation light wavelength λ
P from the back scattered light intensity difference thereof.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了提供能够简单地从一侧评估的单模光纤的拉曼增益效率分布的评估方法和评估装置，由以下方式构成的光纤传输线的拉曼增益效率分布由单模光纤。解决方案：该装置具有用于测量单模光纤的可选位置z上的背散射光强度S（λ，z，P P ）的背散射光强度测量装置11 具有波长λ P 的激发光功率P P 和具有波长λ的OTDR光通过WDM耦合器耦合在一起，并允许进入单模光纤传输在没有激励功率的情况下，线16和S（λ，z，0）以及用于通过使用位置z处的一阶微分系数和激发光波长λ P 的损耗系数来操作单模光纤16的拉曼增益效率的背散射光强度波形分析器12， SB>从背散射光强度差。版权所有（C）2009，JPO＆INPIT

9. 发明专利

JP2008009036A Method and device or evaluating effective raman gain coefficient of single mode optical fiber transmission path 审中-公开
标题翻译：单模光纤传输路径的方法和设备或评估有效拉曼增益系数
公开(公告)号：JP2008009036A
公开(公告)日：2008-01-17
申请号：JP2006177817
申请日：2006-06-28
申请人： Osaka Prefecture Univ , 公立大学法人大阪府立大学
发明人： OHASHI MASAHARU
IPC分类号： G02F1/35 , G01M11/00 , G01M11/02
摘要： PROBLEM TO BE SOLVED: To provide a device for evaluating the effective Raman gain coefficient of a single mode optical fiber, capable of evaluating an effective Raman gain coefficient of the single mode optical fiber from one end and simply in an optical fiber transmission path constituted of the single mode optical fiber.
SOLUTION: The evaluation device of the effective Raman gain coefficient of the single mode optical fiber comprises: a back scattering light intensity measuring instrument 11 which measures back scattering light intensity S1(λ, z, P
p1 ) at an arbitrary position z of the single mode optical fiber 16 when excitation light power P
p1 of wavelength λp and OTDR light of wavelength λ are multiplexed and made incident on a single mode optical fiber transmission path 16 by a WDM coupler and the back scattering light intensity S2(λ, z, P
p2 ) when changing the excitation light power into P
p2 ; and an analyzing device and/or an adjusting computer device which calculates the effective Raman gain coefficient of the single mode optical fiber 16 by using the difference between both back scattering light intensities, the loss coefficient at excitation light wavelength λp and the difference (P
p1 -P
p2 ) of the excitation powers.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于评估单模光纤的有效拉曼增益系数的装置，其能够从一端和仅在光纤传输中评估单模光纤的有效拉曼增益系数路径由单模光纤构成。解决方案：单模光纤的有效拉曼增益系数的评估装置包括：背散射光强度测量仪11，其测量反散射光强度S1（λ，z，P p1 ）在波长λp的激发光功率P p1 和波长λ的OTDR光的单模光纤16的任意位置z被复用并入射到单模光纤传输路径16 通过WDM耦合器和将激发光功率改变为P p2 时的背散射光强度S2（λ，z，P p2 ）; 以及分析装置和/或调整计算机装置，其通过使用两个反向散射光强度之间的差异，激发光波长λp处的损耗系数和差异（P＆S）来计算单模光纤16的有效拉曼增益系数， SB> p1 -P p2 ）。版权所有（C）2008，JPO＆INPIT

10. 发明专利

JP2003329544A Effective nonlinear constant measuring method and apparatus for single-mode optical fiber 有权
标题翻译：有效的非线性恒定测量方法和单模光纤的设备
公开(公告)号：JP2003329544A
公开(公告)日：2003-11-19
申请号：JP2002139702
申请日：2002-05-15
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： NAKAJIMA KAZUHIDE , OHASHI MASAHARU
IPC分类号： G01M11/02
摘要： PROBLEM TO BE SOLVED: To provide a method and an apparatus for accurately evaluating the effective nonlinear constant of an optical fiber to be measured at a desired wavelength by using the measurement result of the distribution of refraction of a single-mode optical fiber section and the distribution of an electric field.
SOLUTION: The distribution of a refractive index on an arbitrary section of the single-mode optical fiber, and that of the electric field at a desired wavelength are measured. The distribution of a nonlinear diffraction index is obtained by using the distribution of the refractive index and an additive dependency of the nonlinear refractive index determined by a glass material in the single- mode optical fiber. Further, arithmetic processing with the distribution of the electric field is performed, thus accurately evaluating the effective nonlinear refractive index and the effective nonlinear constant of the single-mode optical fiber to be measured.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种通过使用单模光纤的折射分布的测量结果来准确地评估要测量的光纤在期望波长的有效非线性常数的方法和装置部分和电场的分布。解决方案：测量单模光纤的任意部分上的折射率分布以及期望波长处的电场的折射率分布。通过使用折射率的分布和由单模光纤中的玻璃材料确定的非线性折射率的附加依赖性来获得非线性衍射指数的分布。此外，执行具有电场分布的算术处理，从而准确地评估要测量的单模光纤的有效非线性折射率和有效非线性常数。版权所有（C）2004，JPO

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