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1. 发明专利

JP2015021986A センサ用光ファイバ有权
标题翻译：光纤传感器
公开(公告)号：JP2015021986A
公开(公告)日：2015-02-02
申请号：JP2013147524
申请日：2013-07-16
申请人：日本電信電話株式会社 , Nippon Telegr & Teleph Corp , 国立大学法人東京大学 , Univ Of Tokyo , 国立大学法人東京大学
发明人： KUBOTA HIROKAZU , TSUJIKAWA KYOZO , MA LIN , HANZAWA NOBUTOMO , HOTATE KAZUO
IPC分类号： G02B6/02 , G01D5/353 , G02B6/024
摘要：【課題】簡易な工程で製造可能な光ファイバセンサを実現するセンサ用光ファイバを提供する。【解決手段】断面視において単一モードファイバのクラッド部11に、コア部12を中心とした正多角形の全ての頂点にその中心が配された配置以外の非等方的な配置で概略円形の空孔13が形成されている。空孔13の数は一つであること、又は、二つであることが好ましい。また、クラッド部11とコア部12との比屈折率差は0.7%以上であることが好ましい。【選択図】図2
摘要翻译：要解决的问题：提供一种能够实现能够通过简单步骤制造的光纤传感器的传感器光纤。解决方案：大致圆形孔13以非各向同性的布置形成，其不同于所有具有核心部分12为中心的正多边形的顶点具有正多边形的中心，在单模光纤的包层部分11的横截面图中。优选地，孔13的数量是一个或两个。此外，包层部11和芯部12的相对折射率差优选为0.7％以上。

2. 发明专利

JP2013190589A Polarizer 有权
标题翻译：偏光镜
公开(公告)号：JP2013190589A
公开(公告)日：2013-09-26
申请号：JP2012056582
申请日：2012-03-14
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社 , Univ Of Tokyo , 国立大学法人東京大学
发明人： KUBOTA HIROKAZU , TSUJIKAWA KYOZO , MA LIN , HOTATE KAZUO , HE ZU YUAN , KIKUCHI MASASHI
IPC分类号： G02B5/30 , G02B27/28
摘要： PROBLEM TO BE SOLVED: To provide a polarizer which is capable of reducing an influence of nonlinear optical effects of a dielectric.SOLUTION: A polarizer 1 has a fiber coupler structure having a coupling part 3 where two hollow core optical fibers 2 are coupled in a lengthwise direction. The portions transmitting light are hollow core parts of the hollow core optical fibers.
摘要翻译：要解决的问题：提供一种能够减少电介质的非线性光学效应的影响的偏振器。解决方案：偏振器1具有光纤耦合器结构，其具有耦合部分3，其中两个中空芯光纤2耦合在一个纵向。透射光的部分是中空芯光纤的中空芯部分。

3. 发明专利

JP2011227255A Spatial mode filter 有权
标题翻译：空间模式滤波器
公开(公告)号：JP2011227255A
公开(公告)日：2011-11-10
申请号：JP2010096225
申请日：2010-04-19
申请人： Nippon Telegr & Teleph Corp , Univ Of Tokyo , 国立大学法人東京大学 , 日本電信電話株式会社
发明人： KUBOTA HIROKAZU , HOTATE KAZUO , HE ZU YUAN
IPC分类号： G02B27/46 , G02B5/18
摘要： PROBLEM TO BE SOLVED: To provide a spatial mode filter capable of easily separating a desired high-order mode.SOLUTION: A spatial mode filter comprises: a core portion including a hollow or a low refractive index medium; and a cladding portion provided with a diffraction grating composed of a dielectric material, the diffraction grating being arranged around the core portion and forming a photonic band gap. The diffraction grating includes a plurality of low-refractive index portions which are arranged in a regular manner and extend in a longitudinal direction of the diffraction grating. The grating interval of the diffraction grating is set by determining a basic mode and a high-order mode in a wavelength range of use based on the structure of the core portion and the cladding portion so as to locate only the high-order mode in the photonic band gap.
摘要翻译：要解决的问题：提供能够容易地分离所需高阶模式的空间模式滤波器。解决方案：空间模式滤波器包括：芯部分，包括中空或低折射率介质; 以及设置有由电介质材料构成的衍射光栅的包层部，所述衍射光栅围绕所述芯部配置并形成光子带隙。衍射光栅包括多个低折射率部分，它们以规则的方式布置并沿着衍射光栅的纵向方向延伸。通过基于芯部分和包层部分的结构确定使用的波长范围内的基本模式和高阶模式来设置衍射光栅的光栅间隔，以便仅将高阶模式定位在光子带隙。版权所有（C）2012，JPO＆INPIT

4. 发明专利

JP2013007908A Optical fiber coupler 有权
标题翻译：光纤耦合器
公开(公告)号：JP2013007908A
公开(公告)日：2013-01-10
申请号：JP2011140842
申请日：2011-06-24
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社 , Univ Of Tokyo , 国立大学法人東京大学
发明人： KUBOTA HIROKAZU , TSUJIKAWA KYOZO , MA LIN , HOTATE KAZUO , HE ZU YUAN , KIKUCHI MASASHI
IPC分类号： G02B6/28 , G02B6/00 , G02B6/032
摘要： PROBLEM TO BE SOLVED: To provide an optical fiber coupler which equalizes propagation constants of two photonic bandgap fibers and has high coupling efficiency.SOLUTION: In an optical fiber coupler 1, two photonic band gap fibers different by core diameter are joined, and grating spaces of clads constituting a first photonic band gap fiber 11 and a second photonic band gap fiber 21 respectively are different from each other to equalize respective propagation constants of the first photonic band gap fiber 11 and the second photonic bandgap fiber 21.
摘要翻译：要解决的问题：提供一种均衡两个光子带隙光纤的传播常数并具有高耦合效率的光纤耦合器。解决方案：在光纤耦合器1中，两芯线径不同的光子带隙光纤被接合，并且分别构成第一光子带隙光纤11和第二光子带隙光纤21的光栅空间分别与每个光纤带隙光纤不同另外要平衡第一光子带隙光纤11和第二光子带隙光纤21的相应传播常数。版权所有：（C）2013，JPO＆INPIT

5. 发明专利

JP2012027402A Method for manufacturing directional coupler using optical fiber 审中-公开
标题翻译：使用光纤制造方向耦合器的方法
公开(公告)号：JP2012027402A
公开(公告)日：2012-02-09
申请号：JP2010168496
申请日：2010-07-27
申请人： Nippon Telegr & Teleph Corp , Univ Of Tokyo , 国立大学法人東京大学 , 日本電信電話株式会社
发明人： KUBOTA HIROKAZU , HOTATE KAZUO , HE ZU YUAN
IPC分类号： G02B6/287 , G02B6/00 , G02B6/032
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing a directional coupler using optical fibers, capable of manufacturing a coupler having a desired performance including a case using a photonic crystal fiber and a photonic bandgap fiber that have a structure enclosing a core periphery with holes.SOLUTION: This method for manufacturing a directional coupler comprising two optical fibers 10 includes: a polishing step for removing parts of the respective side faces of the two optical fibers by polishing and forming removed surfaces 15; and a joining step for joining them together, with the removed surfaces facing each other. The polishing step comprises: propagating reference light in the core 11 of the optical fiber, polishing it while measuring an output light intensity of the reference light; and, when the output light intensity is attenuated to a predetermined intensity, finishing the polishing.
摘要翻译：解决问题的方案：提供一种使用光纤制造定向耦合器的方法，其能够制造具有期望性能的耦合器，其包括使用光子晶体光纤的情况和具有包围芯的结构的光子带隙光纤周边有孔。解决方案：用于制造包括两个光纤10的定向耦合器的方法包括：抛光步骤，用于通过抛光和形成去除的表面15来去除两个光纤的各个侧面的部分; 以及将它们连接在一起的接合步骤，其中移除的表面彼此面对。抛光步骤包括：将参考光传播到光纤的芯11中，在测量参考光的输出光强度的同时进行抛光; 并且当输出光强度衰减到预定强度时，完成抛光。版权所有（C）2012，JPO＆INPIT

6. 发明专利

JP2010050649A Optical transmission device 有权
标题翻译：光传输设备
公开(公告)号：JP2010050649A
公开(公告)日：2010-03-04
申请号：JP2008212227
申请日：2008-08-20
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： YAMAMOTO HIDETO , KOMUKAI TETSUO , HASHIZUME YASUAKI , TAKARA HIDEHIKO , KUBOTA HIROKAZU
IPC分类号： H04B10/2507 , H04B10/27 , H04B10/29 , H04B10/40 , H04B10/50 , H04B10/60 , H04J14/00 , H04J14/02
摘要： PROBLEM TO BE SOLVED: To provide an optical transmission device which has a wavelength demultiplexing means and controls crosstalk to wavelength-multiplexed signal light.
SOLUTION: The optical transmission device has a signal extraction means for extracting signal light which has a specified wavelength from signal light inputted from a first input port, a signal block means for extracting signal light that the specified wavelength signal light is blocked from signal light inputted from a second input port, and a wavelength demultiplexing means which has a means for wavelength-multiplexing the signal light extracted by the signal extraction means with the signal light extracted by the signal block means and outputting it from an output port. The transmission rate is configured for the signal extraction means and the signal block means so that an extinction ratio (ε
total ) is smaller than a specified value which is calculated from a desired OSNR penalty p.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：解决的问题：提供一种具有波长解复用装置并控制波长多路复用信号光的串扰的光传输装置。光传输装置具有信号提取装置，用于从从第一输入端口输入的信号光中提取具有指定波长的信号光;信号块装置，用于提取指定波长信号光被阻挡的信号光; 从第二输入端口输入的信号光和波长解复用装置，其具有用信号提取装置提取出的信号光进行波长多路复用的装置，并用信号块装置提取出的信号光，并从输出端口输出。对于信号提取装置和信号块装置配置传输速率，使得消光比（ε总计）小于根据期望的OSNR罚分p计算的指定值。版权所有（C）2010，JPO＆INPIT

7. 发明专利

JP2007189402A Demodulation circuit 有权
标题翻译：解调电路
公开(公告)号：JP2007189402A
公开(公告)日：2007-07-26
申请号：JP2006004705
申请日：2006-01-12
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： KUBOTA HIROKAZU , MIYAMOTO YUTAKA
IPC分类号： H04B10/2507 , H04B10/255 , H04B10/516 , H04B10/548 , H04B10/58 , H04B10/61 , H04J11/00
摘要： PROBLEM TO BE SOLVED: To provide a demodulation circuit capable of eliminating the need for computation with a heavy load having been required for prior arts by compensating a received signal kept in a state of an optical signal when demodulating a phase modulation signal.
SOLUTION: The demodulation circuit provides a phase change reverse to intensity variations of the optical signal, or changes a discrimination phase of a phase discriminator provided to a pre-stage of a light receiving unit prior to demodulation of the optical signal. For example, the demodulation circuit changes the discrimination phase depending on a difference of the intensity of the optical signal to be demodulated between a present time slot and one preceding time slot, or the phase discriminator is provided at its part with a high nonlinear region wherein self-phase modulation is prone to cause, and the self-phase modulation caused in the high nonlinear region changes the discrimination phase of the phase discriminator.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种解调电路，其能够通过在解调相位调制信号时补偿保持在光信号的状态下的接收信号而消除对现有技术所需的重负载的计算需要。解决方案：解调电路提供与光信号的强度变化相反的相位变化，或者在解调光信号之前改变提供给光接收单元的前级的鉴相器的鉴别相位。例如，解调电路根据当前时隙与前一时隙之间要解调的光信号的强度的差异来改变鉴别相位，或者在其部分具有高非线性区域提供相位鉴别器，其中，自相位调制容易引起，而在高非线性区域引起的自相位调制改变了鉴相器的识别相位。版权所有（C）2007，JPO＆INPIT

8. 发明专利

JP2004102281A Photonic crystal fiber and method for manufacturing the same 审中-公开
公开(公告)号：JP2004102281A
公开(公告)日：2004-04-02
申请号：JP2003312492
申请日：2003-09-04
申请人： Mitsubishi Cable Ind Ltd , Nippon Telegr & Teleph Corp , 三菱電線工業株式会社 , 日本電信電話株式会社
发明人： YOSHIDA MINORU , TANAKA MASATOSHI , FUJITA MORIYUKI , OMAE TOSHIKAZU , IMAMURA KAZUO , NAKAZAWA MASATAKA , KUBOTA HIROKAZU , KAWANISHI SATOKI
IPC分类号： G02B6/00 , C03B37/012 , C03B37/027 , G02B6/02 , G02B6/032 , G02B6/20
CPC分类号： G02B6/02347 , C03B37/01225 , C03B37/02745 , C03B37/02781 , C03B2203/14 , C03B2203/16 , C03B2203/18 , C03B2203/20 , C03B2203/42 , C03B2205/06 , G02B6/02371
摘要： PROBLEM TO BE SOLVED: To provide a photonic crystal fiber which can change propagatable wavelengths and dispersion values and a method for manufacturing the same. SOLUTION: The photonic crystal fiber is provided with a perforated section 12 which is most closely arrayed with a number of pores 12a extending in the central axial direction of a fiber and a core section 11 which is formed to a solid or hollow form at the center of the perforated section 12. The perforated section 12 is formed by being twisted around the central axis of the fiber. COPYRIGHT: (C)2004,JPO

9. 发明专利

JP2004078027A Absolute single mode optical fiber and its designing method 有权
标题翻译：绝对单模光纤及其设计方法
公开(公告)号：JP2004078027A
公开(公告)日：2004-03-11
申请号：JP2002241070
申请日：2002-08-21
申请人： Mitsubishi Cable Ind Ltd , Nippon Telegr & Teleph Corp , 三菱電線工業株式会社 , 日本電信電話株式会社
发明人： KUBOTA HIROKAZU , KAWANISHI SATOKI , SUZUKI KAZUNOBU , KOYANAGI SHIGEKI , TANAKA MASATOSHI , FUJITA MORIYUKI
IPC分类号： G02B6/00 , C03B37/012 , G02B6/02 , G02B6/032 , G02B6/20
CPC分类号： G02B6/02357 , C03B37/01217 , C03B37/0122 , C03B2203/14 , C03B2203/30 , C03B2203/42
摘要： PROBLEM TO BE SOLVED: To provide an absolute single mode optical fiber which is easily manufactured and has a high degree of freedom of design and its designing method. SOLUTION: A cladding part 12 constituting the optical fiber is configured in a photonic crystal structure provided with voids which extend in the extension direction of the cladding part 12 and arranged cyclically in a lattice spacing Λ, and the voids are arranged so as to make an axisymmetric property around the central axis of a core part 11 to be less than three times. The lattice spacing Λ of the voids is set so that an effective refractive index of a first mode can be larger than an effective refractive index of the cladding part and also that an effective refractive index of a second mode can be smaller than the effective refractive index of the cladding part in the first mode where the effective refractive index to the wavelength of light propagating through the core part 11 becomes maximum and in the second mode where the effective refractive index becomes the second maximum among a plurality of modes that can exist in an area where the core part 11 and voids adjacently surrounding the core part 11 exist. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供容易制造且具有高自由度设计的绝对单模光纤及其设计方法。解决方案：构成光纤的包层部分12被配置成光子晶体结构，该光子晶体结构具有在包层部分12的延伸方向上延伸并以格间距Λ循环布置的空隙，并且空隙被布置为以使芯部11的中心轴周围的轴对称性小于三倍。空隙的晶格间距Λ被设定为使得第一模式的有效折射率可以大于包层部分的有效折射率，并且第二模式的有效折射率可以小于有效折射率在第一模式中，通过芯部11传播的光的有效折射率变为最大的第一模式中的有效折射率成为第二模式，其中有效折射率成为可能存在于多个模式中的多个模式中的第二最大值核心部分11和空隙相邻地围绕核心部分11的区域存在。版权所有（C）2004，JPO

10. 发明专利

JP2004043267A Method of manufacturing optical fiber 有权
公开(公告)号：JP2004043267A
公开(公告)日：2004-02-12
申请号：JP2002206410
申请日：2002-07-16
申请人： Mitsubishi Cable Ind Ltd , Nippon Telegr & Teleph Corp , 三菱電線工業株式会社 , 日本電信電話株式会社
发明人： YAMATORI SHINYA , KOYANAGI SHIGEKI , YAMAMOTO TETSUYA , KAWANISHI SATOKI , SUZUKI KAZUNOBU , KUBOTA HIROKAZU
IPC分类号： G02B6/00 , C03B37/012 , G02B6/02
CPC分类号： C03B37/0122 , C03B37/01217 , C03B2203/14 , C03B2203/30 , C03B2203/31 , C03B2203/42 , G02B6/02347 , G02B6/02352
摘要： PROBLEM TO BE SOLVED: To provide a method of manufacturing an optical fiber, by which the deformation at the cross section of a part doped with a prescribed element can be suppressed in a drawing process. SOLUTION: The method of manufacturing the optical fiber includes a preform preparing process for preparing a preform 10 by bundling a quartz rod 11 in which a rod main part 11a doped with a prescribed substance and a protective part 11b provided so as to cover the outer periphery of the rod main part 11a and having a softening temperature higher than that of the rod main part 11a are unified, and a plurality of quartz capillary tubes 12 arranged at the periphery of the quartz rod 11 so that the quartz rod 11 is situated in the position of the center axis, and a drawing process for heating and drawing the preform 10 into a fiber form. COPYRIGHT: (C)2004,JPO

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