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21. 发明专利

JP2014230093A 無線通信システム、集中制御局及び無線通信方法有权
标题翻译：无线电通信系统，集中控制站和无线电通信方法
公开(公告)号：JP2014230093A
公开(公告)日：2014-12-08
申请号：JP2013108313
申请日：2013-05-22
申请人：日本電信電話株式会社 , Nippon Telegr & Teleph Corp , 国立大学法人京都大学 , Kyoto Univ
发明人： ISHIHARA KOICHI , KUDO RIICHI , MIZOGUCHI MASATO , YAMAMOTO TAKASHI , HANADA KOHEI
IPC分类号： H04W88/12 , H04W84/12 , H04W92/12
摘要：【課題】干渉源が近隣に存在し干渉信号が生じている無線通信システムにおいて、集中制御局の演算負荷を軽減しながら、無線通信の効率を向上させる。【解決手段】集中制御局10と、端末装置と無線通信する基地局装置20とを備えた無線通信システムにおいて、集中制御局10は、各基地局装置20から当該基地局装置の無線通信に関する情報と、他の基地局装置20、または他の無線局装置20及びその配下端末装置の無線通信に関する情報とを示す基地局装置情報を受信する。集中制御局10は、受信した基地局装置情報に基づいて、制御対象の基地局装置20選択してグルーピングすると、基地局装置情報に基づいて、グルーピングされた基地局装置群ごとに通信パラメータを決定し、決定した通信パラメータを基地局装置20に通知する。基地局装置20は、端末装置との無線通信に用いるパラメータを、集中制御局10から通知されたパラメータに設定する。【選択図】図1
摘要翻译：要解决的问题：提高无线电通信的效率，同时减少干扰源位于附近的无线电通信系统中的集中式控制站的计算负担并产生干扰信号。解决方案：无线电通信系统包括集中控制站10和用于通过空气与终端装置进行通信的基站装置20。集中控制站10从基站装置20接收表示基站装置的无线通信信息的基站装置信息和其他基站装置20或其他无线台装置20及其下位终端的无线通信信息设备。集中控制站10基于接收到的基站装置信息选择并分组控制对象基站装置20，然后确定每个分组的基站组的通信参数，并将确定的通信参数通知给基站装置20。基站装置20将集中控制站10所公开的参数设定为与终端装置的无线通信中使用的参数。

22. 发明专利

JP2014137588A Multimode optical fiber and optical fiber transmission system 有权
标题翻译：多模光纤和光纤传输系统
公开(公告)号：JP2014137588A
公开(公告)日：2014-07-28
申请号：JP2013007853
申请日：2013-01-18
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： MORI TAKAYOSHI , SAKAMOTO YASUSHI , WADA MASAKI , YAMAMOTO TAKASHI
IPC分类号： G02B6/028 , H04B10/2581
摘要： PROBLEM TO BE SOLVED: To provide a multimode optical fiber and optical fiber transmission system capable of reducing the group delay difference between propagation modes and making the number of propagation modes larger than two.SOLUTION: The multimode optical fiber of the present invention includes a core having a graded profile and a low refractive index layer outside the core, and can reduce the group delay difference between light propagation modes. In other words, in an optical transmission system using a MIMO technology, the load of digital signal processing can be reduced by using the multimode optical fiber. Therefore, the present invention can provide a multimode optical fiber capable of reducing the load of the digital processing required for reconstructing a signal.
摘要翻译：要解决的问题：提供能够减少传播模式之间的组延迟差异并使传播模式数大于2的多模光纤和光纤传输系统。解决方案：本发明的多模光纤包括核在芯外部具有分级轮廓和低折射率层，并且可以减少光传播模式之间的组延迟差。换句话说，在使用MIMO技术的光传输系统中，通过使用多模光纤可以减少数字信号处理的负担。因此，本发明可以提供能够减少重建信号所需的数字处理的负载的多模光纤。

23. 发明专利

JP2013081054A Mode multiplexed transmission system and mode multiplex transmission method 有权
标题翻译：模式多路传输系统和模式多路传输方法
公开(公告)号：JP2013081054A
公开(公告)日：2013-05-02
申请号：JP2011219721
申请日：2011-10-04
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： SAKAMOTO YASUSHI , HANZAWA NOBUTOMO , YAMAMOTO TAKASHI , MORI TAKAYOSHI
IPC分类号： H04J14/00 , G02B6/293 , G02F1/383 , H04B10/27 , H04B10/29 , H04J14/04 , H04J14/06
摘要： PROBLEM TO BE SOLVED: To realize long distance large capacity transmission in a mode multiplexed transmission system.SOLUTION: A mode multiplexed transmission system according to the present invention includes a mode multiplexer and a mode demultiplexer. The mode multiplexer generates propagation light of the first high order or higher mode of signal light owing to nonlinear effects between signal light and pump light and converts it into mode multiplexed signal light having plural modes of propagation light multiplexed into a single wavelength. The mode demultiplexer generates basic mode light of signal light included in the mode multiplexed signal light owing to linear effects between the pump light and the mode multiplexed signal light and converts it into a plurality of signal light differing in wavelength.
摘要翻译：要解决的问题：在模式复用传输系统中实现长距离大容量传输。解决方案：根据本发明的模式多路复用传输系统包括模式多路复用器和模式解复用器。由于信号光和泵浦光之间的非线性效应，模式多路复用器产生第一高阶或更高信号光模式的传播光，并将其转换成多路复用为单一波长的多种传播光模式的多路复用信号光。由于泵浦光和模式多路复用信号光之间的线性效应，模式解复用器产生包括在模式多路复用信号光中的信号光的基本模式光，并将其转换成波长不同的多个信号光。版权所有（C）2013，JPO＆INPIT

24. 发明专利

JP2012160782A Multimode light transmission system and method 有权
标题翻译：多模光传输系统及方法
公开(公告)号：JP2012160782A
公开(公告)日：2012-08-23
申请号：JP2011017083
申请日：2011-01-28
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： MORI TAKAYOSHI , YAMAMOTO TAKASHI , SAKAMOTO YASUSHI , HANZAWA NOBUTOMO
IPC分类号： H04B10/25 , H04B10/2581 , H04B10/516 , H04B10/61
摘要： PROBLEM TO BE SOLVED: To realize simplification of a configuration and a high speed in a multimode light receiving device.SOLUTION: A multimode light receiving device has: mode convergence devices 22to 22to which coherent modulation signal light transmitted in a multimode fiber 100 is input and which converges a plurality of modes in the transmitted coherent modulation signal light to a basic mode; and coherent optical receivers 23to 23receiving the coherent modulation signal light converged to the basic mode by the mode convergence devices 22to 22.
摘要翻译：要解决的问题：为了实现多模式光接收装置中的配置和高速度的简化。解决方案：多模光接收装置具有：相干调制信号光的模式会聚装置22 1 至22 5 在多模光纤100中传输的信号被输入并将所发射的相干调制信号光中的多个模式会聚到基本模式; 以及通过模式会聚装置22接收到基本模式的相干调制信号光的相干光接收机23 1 至23 5 < 1 到22 5 。版权所有（C）2012，JPO＆INPIT

25. 发明专利

JP2011002623A Method and device for generating multi-wavelength light 审中-公开
标题翻译：用于产生多波长光的方法和装置
公开(公告)号：JP2011002623A
公开(公告)日：2011-01-06
申请号：JP2009145100
申请日：2009-06-18
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： SAKAMOTO YASUSHI , YAMAMOTO TAKASHI
IPC分类号： G02B26/00 , G02F1/01
摘要： PROBLEM TO BE SOLVED: To provide a multi-wavelength light generating method and device for generating multi-wavelength light of optional frequency interval with a single multi-wavelength light generating device.SOLUTION: The multi-wavelength light generating device includes a multi-wavelength light generating means for generating the multi-wavelength light of frequency interval f(for example, CW light source 2, modulator 3, and signal generating device 4), and a Fabry Perot filter 5 having two reflecting mirrors facing each other in parallel. The multi-wavelength light of frequency interval fgenerated by the multi-wavelength light generating means is made to enter the Fabry Perot filter 5, the distance L between two reflecting mirrors is controlled, it is set so that the free spectral range (FSR) of the Fabry Perot filter 5 is integer N times the frequency interval f, and it is set so that the frequency of any one light of the multi-wavelength light of the frequency interval fmatches with any one of the transmission frequencies of the Fabry Perot filter 5. Thus, the multi-wavelength light of frequency interval N×fof integer N times the frequency interval fis emitted from the Fabry Perot filter 5.
摘要翻译：要解决的问题：提供一种多波长发光方法和装置，用于通过单个多波长发光装置产生可选频率间隔的多波长光。解决方案：多波长发光装置包括多波长用于产生频率间隔f的多波长光（例如，CW光源2，调制器3和信号发生装置4）的光产生装置和具有彼此面对的两个反射镜的法布里珀罗滤光器5。由多波长发光装置产生的频率间隔的多波长光进入法布里珀罗滤波器5，控制两个反射镜之间的距离L，设定为使得自由光谱范围（FSR）为法布里珀罗滤波器5是频率间隔f的N倍的整数，并且被设置为使得频率间隔的多波长光的任何一个光的频率与法布里珀罗滤波器5的任何一个发射频率匹配因此，从法布里珀罗滤波器5发射的频率间隔N×fof的整数N倍的频率间隔fis的多波长光。

26. 发明专利

JP2009244304A Wide-band multiwavelength light source 有权
标题翻译：宽带多波长光源
公开(公告)号：JP2009244304A
公开(公告)日：2009-10-22
申请号：JP2008087284
申请日：2008-03-28
申请人： Nippon Telegr & Teleph Corp , Oita Univ , 国立大学法人大分大学 , 日本電信電話株式会社
发明人： ONO TAKASHI , TAKADA ATSUSHI , SUZUKI KAZUNOBU , TAKARA HIDEHIKO , YAMAMOTO TAKASHI , KOGA MASABUMI
IPC分类号： G02F1/01
摘要： PROBLEM TO BE SOLVED: To provide a wide-band multiwavelength light source.
SOLUTION: The wide-band multiwavelength light source is provided with: a first multiwavelength light generating means for generating a multiwavelength light from a first laser light source, and a second multiwavelength light generating means for generating a multiwavelength light from a second laser light source. The wide-band multiwavelength light source is provided also with: a first branching means for extracting part of wavelength of the multiwavelength light from the first multiwavelength light generating means, as first control light; and a second branching means for extracting part of wavelength of the multiwavelength light from the second multiwavelength light generating means, as second control light. The wide-band multiwavelength light source is provided further with: a phase detecting means for detecting a phase difference between the first second control lights, and a phase control means for controlling a phase of one of the first and second laser light sources, according to a detected phase signal.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供宽带多波长光源。解决方案：宽带多波长光源设置有：用于从第一激光光源产生多波长光的第一多波长光产生装置和用于从第二激光器产生多波长光的第二多波长光产生装置光源。宽带多波长光源还具有：第一分支装置，用于从第一多波长发光装置中提取多波长光的波长的一部分作为第一控制光; 以及第二分支装置，用于从第二多波长光产生装置中提取多波长光的波长的一部分作为第二控制光。宽带多波长光源还具有：用于检测第一第二控制光之间的相位差的相位检测装置和用于控制第一和第二激光光源之一的相位的相位控制装置，根据检测相位信号。版权所有（C）2010，JPO＆INPIT

27. 发明专利

JP2009204660A Device and method for controlling light pulse speed 有权
标题翻译：用于控制光脉冲速度的装置和方法
公开(公告)号：JP2009204660A
公开(公告)日：2009-09-10
申请号：JP2008043999
申请日：2008-02-26
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： SAKAMOTO YASUSHI , YAMAMOTO TAKASHI , SHIRAKI KAZUYUKI
IPC分类号： G02F1/35 , H01S3/06 , H01S3/10
摘要： PROBLEM TO BE SOLVED: To provide a device and method for controlling light pulse speed generating a gain having lower frequency dependence and further reducing distortion of signal light due to a delay. SOLUTION: When a spectrum width of a gain by Brillouin scattering determined by the characteristic of a medium of an optical fiber 14 is defined as Δf b , an optical comb comprising a plurality of line spectra of frequency intervals each having the spectrum width Δf b or narrower is generated in an optical comb generating device 16, the generated optical comb is amplified and controlled by an optical amplifier 15 and the amplified optical comb is made incident on the optical fiber 14 via an optical coupler 13. Thereby, stimulated Brillouin scattering is generated in the optical fiber 14, a Brillouin gain having flat frequency characteristics is generated, the intensity of the Brillouin gain is controlled and the magnitude of the changes in the group refractive index by the Brillouin gain is controlled to control the speed of pulse light. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于控制光脉冲速度的装置和方法，其产生具有较低频率依赖性的增益，并且进一步减少由于延迟引起的信号光的失真。解决方案：当通过由光纤14的介质的特性确定的布里渊散射的增益的光谱宽度被定义为Δf b 时，包括多个线光谱的光梳在光梳发生装置16中产生各自具有频谱宽度Δf b 或更窄的频率间隔，所生成的光梳由光放大器15放大和控制，放大的光梳入射到由此，在光纤14中产生受激的布里渊散射，产生具有平坦频率特性的布里渊增益，控制布里渊增益的强度和组中的变化幅度控制布里渊增益的折射率来控制脉冲光的速度。版权所有（C）2009，JPO＆INPIT

28. 发明专利

JP2007094143A Multi-wavelength light source 有权
标题翻译：多波长光源
公开(公告)号：JP2007094143A
公开(公告)日：2007-04-12
申请号：JP2005285062
申请日：2005-09-29
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： YAMAMOTO TAKASHI , KOMUKAI TETSUO , KAWANISHI SATOKI
IPC分类号： G02F1/01
摘要： PROBLEM TO BE SOLVED: To realize a multi-wavelength light source which is reduces loss in a modulator and is superior in SNR. SOLUTION: In the multi-wavelength light source, CW light emitted from a CW laser light source 310 is made incident on a phase modulator 322 and has the phase modulated with a modulation index π/4 by a sine wave having a modulation frequency f m [Hz] from a signal generator 340, and chirp is given. The CW light which has received the chirp is subjected to group velocity dispersion B(=±1/(4πf m 2 ))[sec 2 ] by passing a group velocity dispersion medium. The CW light subjected to the group velocity dispersion has the phase modulated in a phase modulator 324 with a modulation index Δθ 1 through a phase shifter 352 by the sine wave having the frequency f m and furthermore has the phase modulated in a phase modulator 326 with a modulation index Δθ 2 through a phase shifter 354 by the sine wave having the frequency f m . Thus a flat spectrum waveform superior in SNR throughout a wide frequency range can be obtained. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：实现减少调制器损耗并且SNR优越的多波长光源。解决方案：在多波长光源中，从CW激光光源310发射的CW光入射到相位调制器322上，并通过具有调制指数π/ 4的正弦波进行相位调制频率f m [Hz]，并且给出啁啾。已经接收到啁啾的CW光经受组速度色散B（=±1 /（4πf m 2 ））[sec 2 ]通过组速度分散介质。经由组速度色散的CW光通过具有频率f m的正弦波通过移相器352在具有调制指数Δθ 1 ，并且通过具有频率f m 的正弦波通过移相器354在具有调制指数Δθ 2 的相位调制器326中进行相位调制。因此，可以获得在宽频率范围内SNR优异的平坦频谱波形。版权所有（C）2007，JPO＆INPIT

29. 发明专利

JP2014006374A Optical fiber 有权
标题翻译：光纤
公开(公告)号：JP2014006374A
公开(公告)日：2014-01-16
申请号：JP2012141825
申请日：2012-06-25
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： MORI TAKAYOSHI , SAKAMOTO YASUSHI , YAMAMOTO TAKASHI , HANZAWA NOBUTOMO
IPC分类号： G02B6/00 , G02B6/032
摘要： PROBLEM TO BE SOLVED: To provide a multi-mode optical fiber that is an optical fiber for transmission, using a mode multiplex transmission technique, the optical fiber being able to hold propagation mode numbers 2, 4, and 6 in a broad band.SOLUTION: An optical fiber according to the invention is an optical fiber that has a plurality of holes in a cross-section of the fiber. If a hollow diameter is d and a hole interval is Λ: Λ
摘要翻译：要解决的问题：为了提供作为用于传输的光纤的多模光纤，使用模式多路传输技术，光纤能够在宽带中保持传播模式2,4和6。解决方案：根据本发明的光纤是在光纤的横截面上具有多个孔的光纤。如果中空直径为d，孔间隔为Λ：Λ<13.6μm，则为0.57

30. 发明专利

JP2013214852A Optical fiber transmission system and optical fiber transmission method 有权
标题翻译：光纤传输系统和光纤传输方法
公开(公告)号：JP2013214852A
公开(公告)日：2013-10-17
申请号：JP2012083485
申请日：2012-04-02
申请人： Nippon Telegr & Teleph Corp , 日本電信電話株式会社
发明人： SAKAMOTO YASUSHI , MORI TAKAYOSHI , YAMAMOTO TAKASHI
IPC分类号： H04B10/2581 , H04B10/2507 , H04J14/00 , H04J14/04 , H04J14/06
摘要： PROBLEM TO BE SOLVED: To dispense with different kinds of optical fiber to eliminate the need for taking fabrication errors of different kinds of optical fiber into consideration and the possibility of unintended mode conversion to occur, thereby compensating mode dispersion easily and surely.SOLUTION: An optical fiber transmission system of the present invention comprises: optical fiber 4 having substantially uniform refraction index in a light propagation direction and having four light propagation modes, capable of propagating four kinds of optical signals in the same wavelength; and mode converters 9A-1, 9A-2 and 9A-3, disposed at a position where the optical fiber 4 is divided into four substantially equal parts in the light propagation direction, which each convert the optical propagation mode before input and after output of the optical signal exclusively from one to another between four optical propagation modes to substantially equalize the distance over which each of the four kinds of optical signals are propagated in each of the four optical propagation modes.
摘要翻译：要解决的问题：为了省去不同种类的光纤，消除了考虑到不同种类的光纤的制造误差的需要以及发生意外模式转换的可能性，从而容易且可靠地补偿模式分散。解决方案：本发明的光纤传输系统包括：在光传播方向具有基本均匀的折射率并具有四种光传播模式的光纤4，其能够传播相同波长的四种光信号; 和模式转换器9A-1,9A-2和9A-3，其设置在光纤4在光传播方向上被分成四个基本相等的部分的位置，每个转换器在输入之前和之后输出时转换光传播模式光信号在四个光传播模式之间专门从一个到另一个，以基本上均衡在四种光传播模式中的每一种传播四种光信号中的每一种的距离。

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