公开(公告)号：US07689131B2

公开(公告)日：2010-03-30

申请号：US10570840

申请日：2003-11-11

申请人： Kimio Uekama ,  Takehiro Fujita ,  Motoyoshi Sekiya

发明人： Kimio Uekama ,  Takehiro Fujita ,  Motoyoshi Sekiya

IPC分类号： H04B10/02

CPC分类号： H04J14/0246 ,  H04B10/0775 ,  H04B2210/077 ,  H04J14/0221 ,  H04J14/0227 ,  H04J14/0279

摘要： A WDM system includes a plurality of P to P WDM systems connected for wavelength-multiplexing optical signals of a plurality of wavelengths, transmitting them to a transmission path, transmitting wavelength-division multiplexed light while performing amplification by using optical AMP in the transmission path, and subjecting the wavelength-division multiplexed light to wavelength isolation at the reception side. An OSC which is a monitoring control signal such as a normal optical signal is used closely within one P to P WDM system. However, by transmitting and receiving the OSC between a plurality of P to P WDM systems, it is possible to solve a problem at the system rise. Moreover, since accumulative OSNR data is transmitted up to the P to P WDM system of the final stage, it is possible to detect an accurate OSNR value and a leak ASE light quantity at the end side.

摘要翻译： WDM系统包括多个连接用于多个波长的波分复用光信号的多个P至P WDM系统，将它们发送到传输路径，在通过在传输路径中使用光AMP进行放大的同时发送波分复用光， 并且在接收侧对波分复用光进行波长隔离。 作为监视控制信号的正常光信号的OSC紧密地在一个P到P WDM系统内使用。 然而，通过在多个P至P WDM系统之间发送和接收OSC，可以解决系统上升的问题。 此外，由于累积OSNR数据被传送到最终级的P至P WDM系统，因此可以在端侧检测精确的OSNR值和泄漏的ASE光量。

公开(公告)号：US20060285846A1

公开(公告)日：2006-12-21

申请号：US10570840

申请日：2003-11-11

申请人： Kimio Uekama ,  Takehiro Fujita ,  Motoyoshi Sekiya

发明人： Kimio Uekama ,  Takehiro Fujita ,  Motoyoshi Sekiya

IPC分类号： H04B10/08

CPC分类号： H04J14/0246 ,  H04B10/0775 ,  H04B2210/077 ,  H04J14/0221 ,  H04J14/0227 ,  H04J14/0279

摘要： A WDM system includes a plurality of P to P WDM systems connected for wavelength-multiplexing optical signals of a plurality of wavelengths, transmitting them to a transmission path, transmitting wavelength-division multiplexed light while performing amplification by using optical AMP in the transmission path, and subjecting the wavelength-division multiplexed light to wavelength isolation at the reception side. An OSC which is a monitoring control signal such as a normal optical signal is used closely within one P to P WDM system. However, by transmitting and receiving the OSC between a plurality of P to P WDM systems, it is possible to solve a problem at the system rise. Moreover, since accumulative OSNR data is transmitted up to the P to P WDM system of the final stage, it is possible to detect an accurate OSNR value and a leak ASE light quantity at the end side.

摘要翻译： WDM系统包括多个连接用于多个波长的波分复用光信号的多个P至P WDM系统，将它们发送到传输路径，在通过在传输路径中使用光AMP进行放大的同时发射波分复用光， 并且在接收侧对波分复用光进行波长隔离。 作为监视控制信号的正常光信号的OSC紧密地在一个P到P WDM系统内使用。 然而，通过在多个P至P WDM系统之间发送和接收OSC，可以解决系统上升的问题。 此外，由于累积OSNR数据被传送到最终级的P至P WDM系统，因此可以在端侧检测精确的OSNR值和泄漏的ASE光量。

公开(公告)号：US07248804B2

公开(公告)日：2007-07-24

申请号：US10892241

申请日：2004-07-16

申请人： Taizo Maeda ,  Takehiro Fujita ,  Motoyoshi Sekiya

发明人： Taizo Maeda ,  Takehiro Fujita ,  Motoyoshi Sekiya

IPC分类号： H04B10/16

CPC分类号： H04B10/2931

摘要： Conventionally, an adjustment of an optical power level of an input Pin of an optical amplifier module is made with an optical variable attenuator. An optical coupler for measuring the optical power level of Pin and an optical variable attenuator are replaced by a variable optical coupler. The branch ratio of the variable optical coupler is varied, whereby the input optical power level Pin to an optical amplifier module is adjusted. As a result, an optical loss is reduced by an amount corresponding to the elimination of the optical attenuator, and also the OSNR of the optical amplifier module is improved.

摘要翻译： 通常，利用光可变衰减器对光放大器模块的输入Pin的光功率电平进行调整。 用于测量Pin和光可变衰减器的光功率电平的光耦合器由可变光耦合器代替。 改变可变光耦合器的分支比例，从而调整到光放大器模块的输入光功率电平Pin。 结果，光损耗减少了对应于光衰减器的消除量，并且光放大器模块的OSNR也得到改善。

公开(公告)号：US07489876B2

公开(公告)日：2009-02-10

申请号：US10901984

申请日：2004-07-30

申请人： Takehiro Fujita ,  Motoyoshi Sekiya ,  Hidezumi Natori

发明人： Takehiro Fujita ,  Motoyoshi Sekiya ,  Hidezumi Natori

IPC分类号： H04B10/02

CPC分类号： H04J14/0279 ,  H01S3/0078 ,  H01S3/06758 ,  H01S3/10015 ,  H01S2301/02 ,  H04B10/291 ,  H04J14/0221 ,  H04J14/0256 ,  H04J14/0275

摘要： The present invention is aimed at providing a low-cost optical transmission system of simple configuration, capable of achieving a satisfactory OSNR even in the time of transmission of a small number of wavelengths. To this end, the optical transmission system is provided with a noise elimination unit corresponding to each of optical amplifiers arranged on a transmission path. This noise elimination unit includes a transmission characteristic capable of selectively transmitting a light in a wavelength band in which a signal light exists through an amplification band of the optical amplifier, and includes a function of automatically eliminating a noise light in a wavelength band in which a signal light does not exist, of noise lights generated in the optical amplifiers.

摘要翻译： 本发明旨在提供一种简单配置的低成本光传输系统，即使在少量波长的传输时也能实现令人满意的OSNR。 为此，光传输系统设置有与布置在传输路径上的每个光放大器相对应的噪声消除单元。 该噪声消除单元包括能够通过光放大器的放大带选择性地发送存在信号光的波长带中的光的透射特性，并且具有自动消除波长带中的噪声光的功能，其中， 信号灯不存在，在光放大器中产生的噪声光。

公开(公告)号：US20050201754A1

公开(公告)日：2005-09-15

申请号：US10901984

申请日：2004-07-30

申请人： Takehiro Fujita ,  Motoyoshi Sekiya ,  Hidezumi Natori

发明人： Takehiro Fujita ,  Motoyoshi Sekiya ,  Hidezumi Natori

IPC分类号： H01S3/10 ,  H01S3/06 ,  H01S3/067 ,  H04B10/07 ,  H04B10/2507 ,  H04B10/29 ,  H04B10/294 ,  H04J14/00 ,  H04J14/02

CPC分类号： H04J14/0279 ,  H01S3/0078 ,  H01S3/06758 ,  H01S3/10015 ,  H01S2301/02 ,  H04B10/291 ,  H04J14/0221 ,  H04J14/0256 ,  H04J14/0275

摘要： The present invention is aimed at providing a low-cost optical transmission system of simple configuration, capable of achieving a satisfactory OSNR even in the time of transmission of a small number of wavelengths. To this end, the optical transmission system is provided with a noise elimination unit corresponding to each of optical amplifiers arranged on a transmission path. This noise elimination unit includes a transmission characteristic capable of selectively transmitting a light in a wavelength band in which a signal light exists through an amplification band of the optical amplifier, and includes a function of automatically eliminating a noise light in a wavelength band in which a signal light does not exist, of noise lights generated in the optical amplifiers.

摘要翻译： 本发明旨在提供一种简单配置的低成本光传输系统，即使在少量波长的传输时也能实现令人满意的OSNR。 为此，光传输系统设置有与布置在传输路径上的每个光放大器相对应的噪声消除单元。 该噪声消除单元包括能够通过光放大器的放大带选择性地发送存在信号光的波长带中的光的透射特性，并且具有自动消除波长带中的噪声光的功能，其中， 信号灯不存在，在光放大器中产生的噪声光。

公开(公告)号：US07391560B2

公开(公告)日：2008-06-24

申请号：US10945272

申请日：2004-09-21

申请人： Hidezumi Natori ,  Motoyoshi Sekiya ,  Takehiro Fujita

发明人： Hidezumi Natori ,  Motoyoshi Sekiya ,  Takehiro Fujita

IPC分类号： H01S4/00 ,  H04B10/12

CPC分类号： H01S3/06758 ,  H01S3/005 ,  H01S3/10007 ,  H01S3/10015 ,  H01S3/1305 ,  H01S3/1608 ,  H01S2301/04 ,  H04B10/2941 ,  H04B2210/003

摘要： The present invention relates to an optical amplifier and, in particular, it relates to multistage optical amplification having a feature for compensating for the tilt that is generated when a signal having a plurality of optical wavelengths and the like according to a wavelength division multiplexing (WDM) method is amplified in a wide bandwidth. The multistage optical amplifier comprises: a plurality of optical amplifiers that are connected in a multistage manner; and a common control section for commonly controlling pumping light powers of said plurality of optical amplifiers, wherein said common control section includes: tilt detection means for detecting amounts of tilt of each of said plurality of optical amplifiers; and tilt cancellation means for controlling the pumping light powers of said plurality of optical amplifiers so that the amounts of tilt of each of the optical amplifiers detected by said tilt detection means cancel each other.

摘要翻译： 光放大器技术领域本发明涉及一种光放大器，特别涉及具有补偿根据波分多路复用（WDM）具有多个光波长等的信号时产生的倾斜的特征的多级光放大 ）方法在宽带宽中被放大。 多级光放大器包括：以多级方式连接的多个光放大器; 以及用于共同控制所述多个光放大器的泵浦光功率的公共控制部分，其中所述公共控制部分包括：倾斜检测装置，用于检测所述多个光放大器中的每一个的倾斜量; 以及用于控制所述多个光放大器的泵浦光功率的倾斜消除装置，使得由所述倾斜检测装置检测的每个光放大器的倾斜量相互抵消。

公开(公告)号：US20060127101A1

公开(公告)日：2006-06-15

申请号：US10892241

申请日：2004-07-16

申请人： Taizo Maeda ,  Takehiro Fujita ,  Motoyoshi Sekiya

发明人： Taizo Maeda ,  Takehiro Fujita ,  Motoyoshi Sekiya

IPC分类号： H04B10/00

CPC分类号： H04B10/2931

摘要： Conventionally, an adjustment of an optical power level of an input Pin of an optical amplifier module is made with an optical variable attenuator. An optical coupler for measuring the optical power level of Pin and an optical variable attenuator are replaced by a variable optical coupler. The branch ratio of the variable optical coupler is varied, whereby the input optical power level Pin to an optical amplifier module is adjusted. As a result, an optical loss is reduced by an amount corresponding to the elimination of the optical attenuator, and also the OSNR of the optical amplifier module is improved.

摘要翻译： 通常，利用光可变衰减器对光放大器模块的输入引脚的光功率电平进行调整。 用于测量Pin和光可变衰减器的光功率电平的光耦合器由可变光耦合器代替。 改变可变光耦合器的分支比例，从而调整到光放大器模块的输入光功率电平Pin。 结果，光损耗减少了对应于光衰减器的消除量，并且光放大器模块的OSNR也得到改善。

公开(公告)号：US20050219682A1

公开(公告)日：2005-10-06

申请号：US10945272

申请日：2004-09-21

申请人： Hidezumi Natori ,  Motoyoshi Sekiya ,  Takehiro Fujita

发明人： Hidezumi Natori ,  Motoyoshi Sekiya ,  Takehiro Fujita

IPC分类号： G02F1/35 ,  G02F1/365 ,  H01S3/00 ,  H01S3/067 ,  H01S3/10 ,  H01S3/13 ,  H01S3/16 ,  H01S3/30 ,  H04B10/07 ,  H04B10/29 ,  H04B10/294 ,  H04J14/00 ,  H04J14/02

CPC分类号： H01S3/06758 ,  H01S3/005 ,  H01S3/10007 ,  H01S3/10015 ,  H01S3/1305 ,  H01S3/1608 ,  H01S2301/04 ,  H04B10/2941 ,  H04B2210/003

摘要： The present invention relates to an optical amplifier and, in particular, it relates to multistage optical amplification having a feature for compensating for the tilt that is generated when a signal having a plurality of optical wavelengths and the like according to a wavelength division multiplexing (WDM) method is amplified in a wide bandwidth. The multistage optical amplifier comprises: a plurality of optical amplifiers that are connected in a multistage manner; and a common control section for commonly controlling pumping light powers of said plurality of optical amplifiers, wherein said common control section includes: tilt detection means for detecting amounts of tilt of each of said plurality of optical amplifiers; and tilt cancellation means for controlling the pumping light powers of said plurality of optical amplifiers so that the amounts of tilt of each of the optical amplifiers detected by said tilt detection means cancel each other.

摘要翻译： 光放大器技术领域本发明涉及一种光放大器，特别涉及具有补偿根据波分多路复用（WDM）具有多个光波长等的信号时产生的倾斜的特征的多级光放大 ）方法在宽带宽中被放大。 多级光放大器包括：以多级方式连接的多个光放大器; 以及用于共同控制所述多个光放大器的泵浦光功率的公共控制部分，其中所述公共控制部分包括：倾斜检测装置，用于检测所述多个光放大器中的每一个的倾斜量; 以及用于控制所述多个光放大器的泵浦光功率的倾斜消除装置，使得由所述倾斜检测装置检测的每个光放大器的倾斜量相互抵消。

公开(公告)号：US09560368B2

公开(公告)日：2017-01-31

申请号：US13132426

申请日：2009-11-27

申请人： Masashi Takahashi ,  Muneaki Yamaguchi ,  Hiroaki Ito ,  Takehiro Fujita

发明人： Masashi Takahashi ,  Muneaki Yamaguchi ,  Hiroaki Ito ,  Takehiro Fujita

IPC分类号： H04N7/26 ,  H04N19/44 ,  H04N19/52 ,  H04N19/51

CPC分类号： H04N19/52 ,  H04N19/124 ,  H04N19/13 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/44 ,  H04N19/51 ,  H04N19/61

摘要： High-quality video is provided using a small amount of coded bits. The moving picture decoding method performs inter-frame prediction processing. With the aforementioned inter-frame prediction processing, blocks with similar motion vectors from among the motion vectors in multiple blocks that have already been decoded are combined and a combined area is computed. A predicted vector for a target block to be decoded is computed using the motion vector of the aforementioned combined area, and a motion vector for the aforementioned target block is computed based on the aforementioned predicted vector and a difference vector which is included in a coded stream that is input. A predicted image is generated using the aforementioned motion vector, and a difference image which is included in the aforementioned coded stream and the aforementioned predicted image are added to generate a decoded image.

摘要翻译： 使用少量的编码位提供高质量视频。 运动图像解码方法执行帧间预测处理。 利用上述帧间预测处理，组合具有已经被解码的多个块中的运动矢量中具有相似运动矢量的块，并且计算组合区域。 使用上述组合区域的运动矢量来计算要解码的目标块的预测向量，并且基于上述预测矢量和包括在编码流中的差分矢量来计算上述目标块的运动矢量 那是输入。 使用上述运动矢量生成预测图像，并且添加包括在上述编码流和上述预测图像中的差分图像以生成解码图像。

公开(公告)号：US20120230680A1

公开(公告)日：2012-09-13

申请号：US13396940

申请日：2012-02-15

申请人： Takehiro Fujita ,  Shigeru Ishii ,  Takuya Miyashita

发明人： Takehiro Fujita ,  Shigeru Ishii ,  Takuya Miyashita

IPC分类号： H04B10/08 ,  H04B10/12

CPC分类号： H04B10/0793 ,  H04B10/0795 ,  H04J14/0227 ,  H04J14/0267 ,  H04J14/0271 ,  H04J14/0278 ,  H04Q2213/1301 ,  H04Q2213/13345

摘要： There is provided a method of determining transmission quality of a path in an optical communication network system obtained by connecting a plurality of networks, the method including: acquiring a value representing transmission performance corresponding to a network condition of each of spans in the path in the optical communication network system; and determining the transmission quality of the path on the basis of the acquired value representing transmission performance corresponding to the network condition of each of spans.

摘要翻译： 提供了一种确定通过连接多个网络获得的光通信网络系统中的路径的传输质量的方法，所述方法包括：获取表示与所述路径中的每个跨度的网络状况相对应的传输性能的值 光通信网络系统; 并且基于所获取的表示与每个跨度的网络条件相对应的传输性能的值来确定路径的传输质量。