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1. 发明授权

US06791744B2 Raman amplification optical fiber, optical fiber coil, raman amplifier, and optical communication system 有权
标题翻译：拉曼放大光纤，光纤线圈，拉曼放大器和光通信系统
公开(公告)号：US06791744B2
公开(公告)日：2004-09-14
申请号：US10086833
申请日：2002-03-04
申请人： Eisuke Sasaoka , Motoki Kakui , Masashi Onishi , Toshiki Tanaka , Takao Naito
发明人： Eisuke Sasaoka , Motoki Kakui , Masashi Onishi , Toshiki Tanaka , Takao Naito
IPC分类号： H01S300
CPC分类号： G02B6/02028 , G02B6/02242 , G02B6/02252 , G02B6/03627 , G02B6/4457 , H01S3/06716 , H01S3/06725 , H01S3/06729 , H01S3/302 , H04B10/2916
摘要： The present invention relates to a Raman amplification optical fiber and the like comprising a structure which can Raman-amplify signal light including a plurality of wavelength components at a high efficiency and effectively restrain signal waveforms from deteriorating due to influences of nonlinear optical phenomena, while improving the degree of freedom in the design of optical fiber transmission lines and Raman amplifiers. As characteristics at each wavelength of signal light, the Raman amplification optical fiber has a chromatic dispersion with an absolute value of 6 ps/nm/km or more but 20 ps/nm/km or less, and an effective area Aeff of 20 &mgr;m2 or less, preferably less than 15 &mgr;m2. More preferably, as a characteristic at each wavelength of signal light, the Raman amplification optical fiber has a Raman gain coefficient GR/Aeff of 0.005 (W·m)−1 or more.
摘要翻译：拉曼放大光纤等技术领域本发明涉及一种能够高效率地拉曼放大包含多个波长成分的信号光的结构的拉曼放大用光纤等，并且能够有效地抑制由于非线性光学现象的影响而使信号波形恶化，光纤传输线和拉曼放大器设计的自由度。作为信号光的各波长的特性，拉曼放大光纤具有绝对值为6ps / nm / km以上且20ps / nm / km以下的色散，有效面积Aeff为20μm， 2>以下，优选小于15μm2。更优选地，作为信号光的每个波长的特性，拉曼放大光纤具有0.005（W.m）-1以上的拉曼增益系数GR / Aeff。

2. 发明授权

US07715709B2 Optical switch and network system including the same 有权
标题翻译：光开关和网络系统包括相同
公开(公告)号：US07715709B2
公开(公告)日：2010-05-11
申请号：US10914220
申请日：2004-08-10
申请人： Kouichirou Amemiya , Takao Naito , Toshiki Tanaka
发明人： Kouichirou Amemiya , Takao Naito , Toshiki Tanaka
IPC分类号： H04J14/00
CPC分类号： H04J14/0227 , H04J14/0221 , H04J14/0267 , H04J14/0269 , H04J14/0284 , H04L45/12 , H04L45/48 , H04L45/62 , H04Q11/0062 , H04Q2011/0073
摘要： The optical switch, having a plurality of ports capable of switching optical signal routes in a network in the form of light, includes a detection means for detecting information in regard to the transmission condition of an optical signal passing through each port; and a control means for exchanging the transmission condition information between each switch and controlling the ports, so as to select one route from among a plurality of routes transmitting the optical signal based on the difference of transmission condition information between the relevant switches. The transmission condition information is the power of the optical signal. When the difference between each switch exists, or when at least one switch intervenes in the middle of the transmission route, by selecting a transmission route which minimizes accumulated differences among the switches, configuring a tree structure conventionally performed through manual operation can be set automatically in an optical network system.
摘要翻译：具有能够以光的形式在网络中切换光信号路径的多个端口的光开关包括检测装置，用于检测通过每个端口的光信号的发送状态的信息; 以及控制装置，用于在每个交换机之间交换传输条件信息并控制端口，以便基于相关交换机之间的传输条件信息的差异，从发送光信号的多个路由中选择一个路由。发送条件信息是光信号的功率。当存在每个开关之间的差异时，或者当至少一个开关插入在传输路由的中间时，通过选择使开关之间的累积差异最小化的传输路由，可以自动设置通过手动操作常规执行的树结构光网络系统。

3. 发明授权

US07379233B2 Raman amplifier utilizing pump modulation for expanding gain band width 有权
标题翻译：拉曼放大器利用泵调制扩大增益带宽
公开(公告)号：US07379233B2
公开(公告)日：2008-05-27
申请号：US10715141
申请日：2003-11-18
申请人： Hiroshi Nakamoto , Takao Naito , Kenichi Torii , Toshiki Tanaka
发明人： Hiroshi Nakamoto , Takao Naito , Kenichi Torii , Toshiki Tanaka
IPC分类号： H04B10/17
CPC分类号： H04B10/2916 , H01S3/094076 , H01S3/094096 , H01S3/1022 , H01S3/302 , H04B2210/003
摘要： A plurality of pump light sources generate plural variations of pump light having different frequencies. A modulation circuit intensity-modulates the plural variations of pump light in the predetermined periods, respectively. A pump light pair whose frequency difference equals a Raman shift frequency are modulated such that they cannot simultaneously enters an emission state. A wavelength-multiplexer wavelength-multiplexes the plural variations of pump light modulated by the modulation circuit. A optical guide device guides the plural variations of pump light wavelength-multiplexed by the wavelength-multiplexer to an optical fiber.
摘要翻译：多个泵浦光源产生具有不同频率的泵浦光的多个变化。调制电路分别在预定时段内对泵浦光的多个变化进行强度调制。频率差等于拉曼位移频率的泵浦灯对被调制成不能同时进入发射状态。波长多路复用器对由调制电路调制的泵浦光的多个变化进行波长多路复用。光导装置将由波长多路复用器波长多路复用的泵浦光的多种变化引导到光纤。

4. 发明授权

US06954304B2 Raman amplifier 有权
标题翻译：拉曼放大器
公开(公告)号：US06954304B2
公开(公告)日：2005-10-11
申请号：US10101839
申请日：2002-03-21
申请人： Toshiki Tanaka , Takao Naito
发明人： Toshiki Tanaka , Takao Naito
IPC分类号： G02F1/35 , H01S3/067 , H01S3/094 , H01S3/0941 , H01S3/10 , H01S3/102 , H01S3/30 , H01S5/14 , H04B10/2507 , H04B10/2563 , H04B10/29 , H04B10/291 , H04J14/00 , H04J14/02 , H01S3/00
CPC分类号： H01S3/06754 , H01S3/094011 , H01S3/094096 , H01S3/10023 , H01S3/1053 , H01S3/302 , H01S5/02284 , H01S5/141 , H01S5/146
摘要： A Raman amplifier for an optical transmission system. A light source unit generates pumping light to amplify wavelength-multiplexed signal light having a plurality of wavelengths including a wavelength band of the signal light. A transmission path propagates the signal light and the pumping light and amplifies the signal light. A pumping light supplying unit supplies the pumping light to the transmission path. A filter narrows a spread of a spectrum of the pumping light within the wavelength band of the signal light and outputs it to the pumping light supplying unit. The present invention increases transmission capacity while suppressing degradation of the transmission characteristic due to crosstalk.
摘要翻译：一种用于光传输系统的拉曼放大器。光源单元产生泵浦光以放大具有包括信号光的波长带的多个波长的波长多路复用信号光。传输路径传播信号光和泵浦光并放大信号光。泵送光供给单元将泵浦光供给到传输路径。滤波器将信号光的波长带内的泵浦光的频谱的扩展变窄，并将其输出到泵送光供给单元。本发明增加传输容量，同时抑制由于串扰导致的传输特性的劣化。

5. 发明授权

US06930823B2 Optical transmission method and optical transmission system utilizing Raman amplification 有权
标题翻译：光传输方法和利用拉曼放大的光传输系统
公开(公告)号：US06930823B2
公开(公告)日：2005-08-16
申请号：US10022543
申请日：2001-12-20
申请人： Hiroshi Nakamoto , Takao Naito , Naomasa Shimojoh , Toshiki Tanaka
发明人： Hiroshi Nakamoto , Takao Naito , Naomasa Shimojoh , Toshiki Tanaka
IPC分类号： G02F1/35 , H01S3/067 , H01S3/094 , H01S3/10 , H01S3/102 , H01S3/131 , H01S3/16 , H01S3/30 , H04B10/07 , H04B10/077 , H04B10/29 , H04B10/291 , H01S3/00 , H04B10/08
CPC分类号： H04B10/2916 , H01S3/06754 , H01S3/094096 , H01S3/1301 , H01S3/1608 , H01S3/302 , H04B10/0775 , H04B2210/074
摘要： The present invention has an object to provide an optical transmission technology using Raman amplification wherein a supervisory signal transferred among a plurality of optical transmission apparatuses is superimposed on a main signal light by using a pumping light for Raman amplification. To this end, a Raman amplifier applied with the optical transmission method of the present invention, is provided with a supervisory signal superimposing section for superimposing a supervisory signal transferred among the optical transmission apparatuses on at least one of a plurality of pumping lights of different wavelengths to be supplied to a Raman amplification medium via a multiplexer from a pumping light generating section, thereby transmitting the main signal light propagated through the Raman amplification medium to be Raman amplified, which is superimposed with the supervisory signal.
摘要翻译：本发明的目的是提供一种使用拉曼放大的光传输技术，其中通过使用用于拉曼放大的泵浦光将多个光传输装置之间传输的监视信号叠加在主信号光上。为此，应用本发明的光传输方法的拉曼放大器设置有监视信号叠加部分，用于将在光传输装置之间传送的监控信号叠加在不同波长的多个泵浦光中的至少一个上通过来自泵浦光产生部分的多路复用器提供给拉曼放大介质，从而将通过拉曼放大介质传播的主信号光传输为与监控信号叠加的拉曼放大。

6. 发明授权

US07457546B2 Dispersion-managed optical transmission system 失效
标题翻译：色散管理光传输系统
公开(公告)号：US07457546B2
公开(公告)日：2008-11-25
申请号：US10747314
申请日：2003-12-30
申请人： Toshiki Tanaka , Takao Naito
发明人： Toshiki Tanaka , Takao Naito
IPC分类号： H04B10/12
CPC分类号： H04B10/25253 , H04B10/2918
摘要： An optical transmission system that alleviates waveform distortions due to nonlinear effects in fibers. A transmitter sends WDM signals to a receiver over a dispersion-managed optical transmission line with in-line optical repeaters. The transmission line is divided into a plurality of dispersion compensation intervals each composed of a main segment and a compensation segment. Chromatic dispersion is managed such that the dispersion compensation intervals have a non-zero net dispersion at every boundary point between them, or such that the number of zero-dispersion boundary points is reduced. The main segment is a series of repeater sections with negative dispersion, while the compensation segment is a single repeater section with positive dispersion. Non-uniform distribution of net chromatic dispersions over the transmission length is achieved by combining repeater section with different average dispersions, dispersion compensation intervals with different numbers of repeater sections, or repeater sections with different span lengths.
摘要翻译：一种减轻由于光纤非线性效应引起的波形失真的光传输系统。发射机通过具有直列光中继器的色散管理光传输线路向接收机发送WDM信号。传输线被分成多个色散补偿间隔，每个色散补偿间隔由主要段和补偿段组成。管理色散，使得色散补偿间隔在它们之间的每个边界点处具有非零净色散，或者使得零色散边界点的数量减少。主段是一系列具有负色散的中继器段，而补偿段是具有正色散的单个中继器段。通过将中继器部分与不同的平均色散，具有不同数量的中继器部分的色散补偿间隔或具有不同跨度长度的中继部分组合来实现净色散在传输长度上的不均匀分布。

7. 发明申请

US20070070919A1 Device and method for network configuration and computer product 审中-公开
标题翻译：网络配置和计算机产品的设备和方法
公开(公告)号：US20070070919A1
公开(公告)日：2007-03-29
申请号：US11352868
申请日：2006-02-13
申请人： Toshiki Tanaka , Hideyuki Miyata , Kouichirou Amemiya , Tsunehisa Doi , Takao Naito
发明人： Toshiki Tanaka , Hideyuki Miyata , Kouichirou Amemiya , Tsunehisa Doi , Takao Naito
IPC分类号： G06F15/177 , G06F15/173 , H04J1/16 , H04L12/28
CPC分类号： H04L43/00 , H04L41/0803 , H04L41/12 , H04L43/16 , H04L43/18
摘要： In a network, a controller controls a physical-interconnection selection switch and middle switches so as to dynamically change a network topology according to the state of the network. A traffic analyzer detects how the traffic in the network changes. If there is a change in traffic, the controller controls the physical-interconnection selection switch and the middle switches so as to change the network topology to one suitable for the changed traffic.
摘要翻译：在网络中，控制器控制物理互连选择交换机和中间交换机，以便根据网络的状态动态地改变网络拓扑。流量分析器检测网络中的流量如何变化。如果流量发生变化，则控制器控制物理互连选择开关和中间交换机，以便将网络拓扑改变为适合于改变流量的网络拓扑。

8. 发明申请

US20060171712A1 Information processing system, calculation node, and control method of information processing system 有权
标题翻译：信息处理系统，计算节点和信息处理系统的控制方法
公开(公告)号：US20060171712A1
公开(公告)日：2006-08-03
申请号：US11145918
申请日：2005-06-07
申请人： Toshiki Tanaka , Yasuhiko Aoki , Hideyuki Miyata , Takao Naito , Kouichiro Amemiya
发明人： Toshiki Tanaka , Yasuhiko Aoki , Hideyuki Miyata , Takao Naito , Kouichiro Amemiya
IPC分类号： H04J14/00
CPC分类号： H04Q11/0062 , H04Q2011/009
摘要： The present invention provides an information processing system, comprising a plurality of calculation nodes with an optical transmitter, which individually outputs a plurality of optical signals each having a different wavelength, and an optical receiver, which individually receives a plurality of optical signals each having a different wavelength, an optical transmission path connecting a plurality of the calculation nodes to each other, and optical pathway switching unit, lying in the optical transmission path, for transmitting the optical signal to the specific calculation node in accordance with a wavelength of the optical signal output from one of the calculation nodes.
摘要翻译：本发明提供了一种信息处理系统，包括多个具有单独输出多个具有不同波长的光信号的光发射机的计算节点，以及光接收机，其分别接收多个光信号，每个光信号具有不同的波长，连接多个计算节点的光传输路径和位于光传输路径中的光路径切换单元，用于根据光信号的波长将光信号发送到特定的计算节点从其中一个计算节点输出。

9. 发明授权

US06681082B1 Wavelength division multiplexing optical transmission system, optical amplifier and dispersion compensator 失效
标题翻译：波分复用光传输系统，光放大器和色散补偿器
公开(公告)号：US06681082B1
公开(公告)日：2004-01-20
申请号：US09494529
申请日：2000-01-31
申请人： Toshiki Tanaka , Takao Naito
发明人： Toshiki Tanaka , Takao Naito
IPC分类号： H04B1016
CPC分类号： H04J14/0221 , H04B10/25253 , H04B2210/256
摘要： The present invention has an object to provide a WDM optical transmission system for effectively compensating such as wavelength dispersions of respective wavelength bands, by a simple constitution making use of a hybrid transmission path in case of transmitting a broadband WDM signal light containing a plurality of wavelength bands. To this end, wavelength dispersion characteristics of a hybrid transmission path utilizing a 1.3 &mgr;m zero-dispersion SMF and an RDF in the present WDM optical transmission system, are set such that compensation ratios of wavelength dispersion and dispersion slope become approximately 100% for a reference wavelength band which is one of a plurality of wavelength bands; and dispersion compensation fibers capable of compensating wavelength dispersions caused within the hybrid transmission path are inserted into propagation paths, respectively, within an optical amplifier, for the wavelength bands except for the reference wavelength band. In this way, wavelength dispersion compensation for the plurality of wavelength bands can be assuredly performed with a simple constitution.
摘要翻译：本发明的目的是提供一种WDM光传输系统，用于通过在发送包含多个波长的宽带WDM信号光的情况下使用混合传输路径的简单结构来有效地补偿各波长带的波长色散乐队。为此，使用在本WDM光传输系统中利用1.3μm零色散SMF和RDF的混合传输路径的波长色散特性被设置为使得波长色散和色散斜率的补偿比对于参考值大约为100％波长带，其是多个波长带中的一个; 并且对于除了参考波长带之外的波长带，能够补偿在混合传输路径内引起的波长色散的色散补偿光纤分别插入到光放大器内的传播路径中。以这种方式，可以以简单的结构可靠地进行多个波段的波长色散补偿。

10. 发明授权

US06671083B2 Raman amplifier and optical transmission system 失效
标题翻译：拉曼放大器和光传输系统
公开(公告)号：US06671083B2
公开(公告)日：2003-12-30
申请号：US10101265
申请日：2002-03-20
申请人： Toshiki Tanaka , Kenichi Torii , Takao Naito
发明人： Toshiki Tanaka , Kenichi Torii , Takao Naito
IPC分类号： H01S300
CPC分类号： H04B10/2916 , H01S3/0675 , H01S3/06754 , H01S3/06758 , H01S3/094003 , H01S3/094096 , H01S3/10023 , H01S3/302 , H04B10/071
摘要： The present invention aims at providing a Raman amplifier and an optical transmission system, capable of reducing characteristic deterioration to be caused by excitation lights mixedly existing within a wavelength band of signal lights. To this end, the Raman amplifier of the present invention comprises an excitation light source that generates excitation lights having a wavelength band overlapped with a wavelength band of the signal lights, a multiplexing unit that supplies the excitation lights to an optical transmission path, and an optical filter that suppresses optical components which are included in lights propagated through an optical transmission path and are of the same wavelengths as those of the excitation lights.
摘要翻译：本发明的目的在于提供一种拉曼放大器和光传输系统，其能够降低由混合存在于信号光的波长带内的激发光引起的特性劣化。为此，本发明的拉曼放大器包括产生具有与信号光的波长带重叠的波长带的激励光的激发光源，将激励光提供给光传输路径的复用部，以及滤光器，其抑制包含在通过光传输路径传播并且具有与激发光的波长相同的波长的光的光学部件。

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