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1. 发明授权

US07242519B2 Raman amplifier and optical transmission system using the same 有权
标题翻译：拉曼放大器和光传输系统使用相同
公开(公告)号：US07242519B2
公开(公告)日：2007-07-10
申请号：US10812104
申请日：2004-03-30
申请人： Kenichi Torii , Takao Naito , Toshiki Tanaka , Masahiro Yuki
发明人： Kenichi Torii , Takao Naito , Toshiki Tanaka , Masahiro Yuki
IPC分类号： H04B10/17
CPC分类号： H01S3/302 , H01S3/094096
摘要： It is an object of the present invention to provide a Raman amplifier capable of easily reducing the wavelength deviation of a Raman gain while suppressing system performance degradation, and an optical transmission system using such a Raman amplifier. To this end, the Raman amplifier of the present invention supplies, to an amplification medium, first pumping lights arranged at equal wavelength spacing in a signal light wavelength band, which is shifted to a shorter wavelength side in accordance with a Raman shift frequency, and second pumping lights arranged in a wavelength band on a shorter wavelength side and a longer wavelength side than a wavelength band of the first pumping lights, the wavelength and power of which are set so that peak wavelength spacing of the Raman gain in the signal light wavelength band is substantially equal to each other, to Raman amplifies a WDM signal light, and reduces the wavelength deviation of power of the WDM signal light by using a gain equalizer having the periodicity corresponding to the peak wavelength spacing of the Raman gain.
摘要翻译：本发明的目的是提供一种能够在抑制系统性能劣化的同时，容易地降低拉曼增益的波长偏差的拉曼放大器，以及使用这样的拉曼放大器的光传输系统。为此，本发明的拉曼放大器向放大媒体提供按照拉曼位移频率向短波长侧移动的信号光波长带中的等距波长间隔配置的第一泵浦光，以及第二泵浦光布置在比第一泵浦光的波长带更短波长侧和较长波长侧的波长带中，其波长和功率被设置为使得信号光波长中的拉曼增益的峰值波长间隔通过使用具有对应于拉曼增益的峰值波长间隔的周期的增益均衡器，拉曼放大WDM信号光，并降低WDM信号光的功率波长偏差。

2. 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。

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. 发明申请

US20050063043A1 Raman amplifier 有权
标题翻译：拉曼放大器
公开(公告)号：US20050063043A1
公开(公告)日：2005-03-24
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： G02F1/35 , H01S3/30 , H01S3/00
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。

5. 发明授权

US07400830B2 Quality monitoring method and apparatus for wavelength division multiplexed optical signal and optical transmission system using the same 有权
标题翻译：用于波分复用光信号和使用其的光传输系统的质量监测方法和装置
公开(公告)号：US07400830B2
公开(公告)日：2008-07-15
申请号：US10806330
申请日：2004-03-23
申请人： Kenichi Torii , Takao Naito , Hiroshi Nakamoto , Toru Katagiri
发明人： Kenichi Torii , Takao Naito , Hiroshi Nakamoto , Toru Katagiri
IPC分类号： H04B10/08
CPC分类号： H04B10/07953
摘要： The present invention has an object to provide a technology for monitoring the quality of a WDM signal light, capable of quickly and accurately judging an occurrence of quality deterioration of signal light and a deterioration factor thereof. To this end, according to a quality monitoring apparatus of WDM signal light of the present invention, a part of the WDM signal light being propagated through an optical transmission path is branched as a monitor light, a signal light of one wavelength contained in the monitor light is selected as a channel to be measured. Then, the frequency of occurrences of bit error for the channel to be measured is repeatedly measured for a plurality of times, and whether or not the signal quality is deteriorated is judged, together with the deterioration factor based on the measurement results, and a control signal light for adjusting the signal light power according to the judgment result is transmitted to the optical transmission path, to achieve the improvement of a characteristic of the WDM signal light.
摘要翻译：本发明的目的是提供一种用于监视WDM信号光的质量的技术，其能够快速且准确地判断信号光的质量劣化的发生及其劣化因素。为此，根据本发明的WDM信号光的质量监视装置，通过光传输路径传播的WDM信号光的一部分被分支为监视光，监视器中包含一个波长的信号光选择光作为待测量的通道。然后，重复地测量要测量的通道的位错误的发生频率，并且判断信号质量是否劣化，以及基于测量结果的劣化因子以及控制将根据判断结果调整信号光功率的信号光发送到光传输路径，以实现WDM信号光的特性的提高。

6. 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。

7. 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。

8. 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。

9. 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。

10. 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。

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