公开(公告)号：US07746891B2

公开(公告)日：2010-06-29

申请号：US10818662

申请日：2004-04-05

申请人： Shu Yamamoto ,  Carl Williams ,  Hidetoshi Yokota ,  Kazuo Hashimoto

发明人： Shu Yamamoto ,  Carl Williams ,  Hidetoshi Yokota ,  Kazuo Hashimoto

IPC分类号： H04L12/28

CPC分类号： H04W80/045 ,  H04W8/26 ,  H04W40/00 ,  H04W88/06

摘要： A mobile IPv6 dual-stack node engages in IPv6 communication while roaming within an IPv4-only network, for example using ISATAP. First, the node determines that it has moved Bnd obtains a new IPv4 address. After determining that the visited network contains no IPv6-enabled components, the node uses an IPv6 connect agent to engage in IPv6 communication. The node configures its care-of address using the IPv6 connect agent's routing information and the node's newly-obtained IPv4 address. In one embodiment, the node and the connect agent optimize the handoff when the nodes has moved but still uses the same connect agent. The node sends a binding updates to the connect agents comprising the node's old care-of address and the node's new care-of address. When the connect agent receives a packet destined for the node's previous care-of address, it forwards the packet to the node's currents care-of address, thereby reducing packet loss.

摘要翻译： 移动IPv6双栈节点在仅IPv4网络中漫游时进行IPv6通信，例如使用ISATAP。 首先，节点确定它已经移动Bnd获取新的IPv4地址。 在确定受访网络不包含启用IPv6的组件之后，节点使用IPv6连接代理进行IPv6通信。 节点使用IPv6连接代理的路由信息​​和节点的新获得的IPv4地址来配置其转交地址。 在一个实施例中，节点和连接代理在节点移动但仍使用相同的连接代理时优化切换。 节点向连接代理发送绑定更新，该连接代理包括节点的旧转交地址和节点的新转交地址。 当连接代理接收到目的地为该节点之前转交地址的数据包时，它将数据包转发到节点的电流转交地址，从而减少数据包丢失。

公开(公告)号：US20050015497A1

公开(公告)日：2005-01-20

申请号：US10729257

申请日：2003-12-04

申请人： Hidetoshi Yokota ,  Shu Yamamoto ,  Carl Williams ,  Kazuo Hashimoto

发明人： Hidetoshi Yokota ,  Shu Yamamoto ,  Carl Williams ,  Kazuo Hashimoto

IPC分类号： H04L12/56 ,  G06F15/16 ,  H04L12/66

CPC分类号： H04L12/6418 ,  H04L29/12066 ,  H04L29/12358 ,  H04L61/1511 ,  H04L61/251

摘要： An IPv6 enabled node finds an IPv6 connect agent by using a Domain Name System (DNS) server. The IPv6 enabled node sends a query to the DNS server and, in response, receives one or more identifiers of one or more IPv6 connect agents. In one embodiment, an identifier comprises the name of an IPv6 connect agent. In this embodiment, the IPv6 enabled node then sends a name of a desired IPv6 connect agent to the DNS server and, in response, receives the address of that IPv6 connect agent. The IPv6 enabled node is then able to engage in IPv6 communication using that IPv6 connect agent. In another embodiment, an identifier comprises the address of an IPv6 connect agent. In this embodiment, the IPv6 enabled node is able to engage in IPv6 communication using that IPv6 connect agent without any further contact with the DNS server.

摘要翻译： 启用IPv6的节点通过使用域名系统（DNS）服务器来查找IPv6连接代理。 启用IPv6的节点向DNS服务器发送查询，并作为响应，接收一个或多个IPv6连接代理的一个或多个标识符。 在一个实施例中，标识符包括IPv6连接代理的名称。 在本实施例中，IPv6启用的节点然后将所需的IPv6连接代理的名称发送到DNS服务器，并且响应地接收该IPv6连接代理的地址。 IPv6启用的节点然后能够使用该IPv6连接代理进行IPv6通信。 在另一个实施例中，标识符包括IPv6连接代理的地址。 在本实施例中，启用IPv6的节点能够使用该IPv6连接代理进行IPv6通信，而不与DNS服务器进一步联系。

公开(公告)号：US20050008032A1

公开(公告)日：2005-01-13

申请号：US10818662

申请日：2004-04-05

申请人： Shu Yamamoto ,  Carl Williams ,  Hidetoshi Yokota ,  Kazuo Hashimoto

发明人： Shu Yamamoto ,  Carl Williams ,  Hidetoshi Yokota ,  Kazuo Hashimoto

IPC分类号： H04L12/28 ,  H04L12/56 ,  H04L29/06

CPC分类号： H04W80/045 ,  H04W8/26 ,  H04W40/00 ,  H04W88/06

摘要： A mobile IPv6 dual-stack node engages in IPv6 communication while roaming within an IPv4-only network, for example using ISATAP. First, the node determines that it has moved and obtains a new IPv4 address. After determining that the visited network contains no IPv6-enabled components, the node uses in IPv6 connect agent to engage in IPv6 communication. The node configures its care-of address using the IPv6 connect agent's routing information and the node's newly-obtained IPv4 address. In one embodiment, the node and the connect agent optimize the handoff when the node has moved but still uses the same connect agent. The node sends a binding update to the connect agent comprising the node's old care-of address and the node's new care-of address. When the connect agent receives a packet destined for the node's previous care-of address, it forwards the packet to the node's current care-of address, thereby reducing packet loss.

摘要翻译： 移动IPv6双栈节点在仅IPv4网络中漫游时进行IPv6通信，例如使用ISATAP。 首先，节点确定它已经移动并获得新的IPv4地址。 在确定访问网络不包含启用IPv6的组件之后，该节点在IPv6连接代理中使用IPv6进行通信。 节点使用IPv6连接代理的路由信息​​和节点的新获得的IPv4地址来配置其转交地址。 在一个实施例中，节点和连接代理在节点移动但仍使用相同的连接代理时优化切换。 节点向连接代理发送绑定更新，该连接代理包括节点的旧转交地址和节点的新转交地址。 当连接代理接收到目的地为节点之前转交地址的分组时，它将数据包转发到节点的当前转交地址，从而减少数据包丢失。

公开(公告)号：US06782201B2

公开(公告)日：2004-08-24

申请号：US09731587

申请日：2000-12-07

申请人： Shu Yamamoto ,  Tetsuya Miyazaki ,  Yasuyuki Nagao ,  Tomohiro Otani

发明人： Shu Yamamoto ,  Tetsuya Miyazaki ,  Yasuyuki Nagao ,  Tomohiro Otani

IPC分类号： H04B1008

CPC分类号： H04J14/0291 ,  H04J14/0283 ,  H04Q2011/0058 ,  H04Q2011/0081

摘要： A four fiber ring network optical switching circuit capable of realizing the bridge function at times of the span switching and the ring switching economically by a very compact structure is disclosed. A four fiber ring network optical switching circuit is formed by a 10×8 optical matrix switch having ten input ports and eight output ports, and two branching elements adapted to branch each one of two optical signals among eight optical signals that are inputs of the four fiber ring network optical switching circuit, into two identical optical signals, and to enter the two identical optical signals into two input ports of the 10×8 optical matrix switch such that the eight optical signals are entered into the ten input ports of the 10×8 optical matrix switch as ten optical signals.

摘要翻译： 公开了一种能够通过非常紧凑的结构经济地实现跨度切换时的桥接功能和环形开关的四光纤环网光交换电路。 四光纤环网光交换电路由具有十个输入端口和八个输出端口的10×8光矩阵开关形成，并且两个分支元件适合于在作为四个光纤环的输入的八个光信号之中分支两个光信号中的每一个 网络光交换电路分成两个相同的光信号，并将两个相同的光信号输入到10x8光矩阵开关的两个输入端口，使得八个光信号进入10x8光矩阵开关的十个输入端口，为十 光信号。

公开(公告)号：US06317534B1

公开(公告)日：2001-11-13

申请号：US09215225

申请日：1998-12-18

申请人： Tetsuya Miyazaki ,  Shu Yamamoto ,  Koichi Maru ,  Hisato Uetsuka

发明人： Tetsuya Miyazaki ,  Shu Yamamoto ,  Koichi Maru ,  Hisato Uetsuka

IPC分类号： G02B628

CPC分类号： G02B6/12011

摘要： An optical wavelength routing device comprises an arrayed waveguide comprising a plurality of channel waveguides formed on a substrate, a plurality of input waveguides having 12 input ports located on an input side of the arrayed waveguide, a plurality of output waveguides having 16 input ports located on an output side of the arrayed waveguide, an input slab waveguide for coupling the plurality of input waveguides to the arrayed waveguide to provide a first coupling portion on the side of the input waveguide, and an output slab waveguide for coupling the arrayed waveguide to the plurality of output waveguides to provide a second coupling portion on the side of the output waveguide, in which central wavelengths of lights input to the input ports and output from the output ports are controlled such that a difference between a predetermined wavelength and a central wavelength is suppressed within the range of +&dgr;&lgr;/4. By this structure, a maximum central wavelength difference can be suppressed at minimum.

摘要翻译： 光波长路由设备包括阵列波导，其包括形成在衬底上的多个通道波导，多个输入波导，其具有位于阵列波导的输入侧上的12个输入端口，多个输出波导具有位于 阵列波导的输出侧，用于将多个输入波导耦合到阵列波导的输入平板波导，以在输入波导侧提供第一耦合部分，以及用于将阵列波导耦合到多个波导的输出平板波导 的输出波导，以在输出波导侧提供第二耦合部分，其中输入到输入端口的光的中心波长和从输出端口输出被控制，使得预定波长和中心波长之间的差被抑制 在+ deltalambd / 4的范围内。 通过这种结构，最大限度地抑制最大中心波长差。

公开(公告)号：US06188508B1

公开(公告)日：2001-02-13

申请号：US09324395

申请日：1999-06-03

申请人： Yukio Horiuchi ,  Masatoshi Suzuki ,  Shu Yamamoto ,  Shigeyuki Akiba

发明人： Yukio Horiuchi ,  Masatoshi Suzuki ,  Shu Yamamoto ,  Shigeyuki Akiba

IPC分类号： H01S300

CPC分类号： H04B10/2916 ,  H04B10/0775 ,  H04B10/0777 ,  H04B2210/074 ,  H04B2210/078

摘要： A control signal superimposer for superimposing a control signal on a signal light, comprising a pumping light source for generating a pumping light with intensity fluctuation in accordance with the control signal; a Raman amplification medium pumped by the pumping light from the pumping light source for Raman-amplifying the signal light; a combiner for combining the pumping light output from the pumping light source and the signal light to be Raman-amplified and then supplying them to the Raman amplification medium; and an optical filter for extracting the signal light component from the output light of the Raman amplification medium and terminating the pumping light component.

摘要翻译： 一种用于将控制信号叠加在信号光上的控制信号叠加器，包括用于根据控制信号产生强度波动的泵浦光的泵浦光源; 由来自泵浦光源的泵浦光泵浦拉曼放大信号光的拉曼放大介质; 组合器，用于将从泵浦光源输出的泵浦光与要拉曼放大的信号光组合，然后将其提供给拉曼放大介质; 以及用于从拉曼放大介质的输出光提取信号光分量并终止泵浦光分量的滤光器。

公开(公告)号：US6021235A

公开(公告)日：2000-02-01

申请号：US127564

申请日：1998-07-31

申请人： Shu Yamamoto ,  Hidenori Taga ,  Masatoshi Suzuki ,  Noboru Edagawa ,  Shigeyuki Akiba

发明人： Shu Yamamoto ,  Hidenori Taga ,  Masatoshi Suzuki ,  Noboru Edagawa ,  Shigeyuki Akiba

IPC分类号： H04J14/00 ,  G02B6/02 ,  H04B10/2507 ,  H04B10/2525 ,  H04J14/02 ,  G02B6/28

CPC分类号： H04B10/2525 ,  H04B2210/252 ,  H04B2210/254

摘要： A new two-way WDM optical transmission system is provided. The WDM optical transmission system comprises a two-way optical fiber cable, a first dispersion compensation optical fiber (DCOF) connected to one end of the optical fiber cable, a second DCOF connected to another end of the optical fiber cable, a chromatic dispersion compensating transmitter unit and a chromatic dispersion compensating receiver unit. The two-way optical fiber cable comprises a plurality of segments. The first DCOF is connected to one end of the optical fiber cable and has a compensation amount of a half of a one segment dispersion D.sub.c of the optical fiber cable. The second DCOF is connected to another end of the optical fiber cable and has the compensation amount of the half of the one segment dispersion D.sub.c. And the chromatic dispersion compensating transmitter unit compensates accumulated residual chromatic dispersions to be caused by higher-order wavelength dispersion of the optical fiber cable at each signal wavelength. Further, the chromatic dispersion compensating receiver unit compensates accumulated residual chromatic dispersions caused by higher-order wavelength dispersion of the optical fiber cable at each signal wavelength. The chromatic dispersion compensating transmitter unit has a plurality of optical transmitters, a multiplexer combining a plurality of different wavelength bands and a plurality of chromatic dispersion compensators. And the chromatic dispersion compensating receiver unit has a demultiplexer, a plurality of optical receiver and a plurality of chromatic dispersion compensators.

摘要翻译： 提供了一种新的双向WDM光传输系统。 WDM光传输系统包括双向光纤电缆，连接到光纤电缆的一端的第一色散补偿光纤（DCOF），连接到光纤电缆的另一端的第二DCOF，色散补偿 发射单元和色散补偿接收单元。 双向光缆包括多个段。 第一DCOF连接到光纤电缆的一端，并且具有光纤电缆的一个分段色散Dc的补偿量的一半。 第二DCOF连接到光纤电缆的另一端，并且具有一个分段分散体Dc的一半的补偿量。 并且色散补偿发送单元补偿在每个信号波长处由光纤电缆的高阶波长色散引起的累积残余色散。 此外，色散补偿接收单元补偿由每根信号波长的光纤缆线的高阶波长色散引起的累积的残留色散。 色散补偿发射器单元具有多个光发射器，多个组合多个不同波长带的多路复用器和多个色散补偿器。 并且色散补偿接收单元具有解复用器，多个光接收器和多个色散补偿器。

公开(公告)号：US6005702A

公开(公告)日：1999-12-21

申请号：US802698

申请日：1997-02-19

申请人： Masatoshi Suzuki ,  Itsuro Morita ,  Noboru Edagawa ,  Shu Yamamoto ,  Shigeyuki Akiba

发明人： Masatoshi Suzuki ,  Itsuro Morita ,  Noboru Edagawa ,  Shu Yamamoto ,  Shigeyuki Akiba

IPC分类号： G02F1/01 ,  H04B10/2507 ,  H04B10/2525 ,  H04B10/508 ,  H04B10/516 ,  H04B10/524 ,  H04B10/556 ,  H04B10/58 ,  H04B10/61 ,  H04J14/00 ,  H04J14/02 ,  H04L25/02 ,  H04L25/49 ,  H04B10/04 ,  H04B10/12

CPC分类号： H04B10/505 ,  H04B10/5051 ,  H04B10/506 ,  H04B10/508 ,  H04J14/02

摘要： An optical transmission device using return-to-zero optical pulses as transmission optical pulses, which is capable of enhancing a transmission distance as well as a wavelength range with satisfactory transmission characteristics and enabling an easy realization of the wavelength division multiplexing optical transmission. The optical transmission device is formed by an optical transmitter for transmitting transmission optical pulses by superposing digital data signals onto return-to-zero optical pulses, and a modulator for applying one of a phase modulation and a frequency modulation in synchronization with a transmission rate of the transmission optical pulses, to the transmission optical pulses transmitted by the optical transmitter. This optical transmission device can be utilized in forming a wavelength division multiplexing optical transmission apparatus and an optical transmission system.

摘要翻译： 一种使用归零光脉冲作为传输光脉冲的光传输装置，其能够增强传输距离以及具有令人满意的传输特性的波长范围，并且能够容易地实现波分复用光传输。 光传输装置由光发射机形成，用于通过将数字数据信号叠加在归零光脉冲上来发送传输光脉冲;以及调制器，用于将相位调制和频率调制中的一个与传输速率 传输光脉冲，由光发送器传输的传输光脉冲。 该光传输装置可以用于形成波分复用光传输装置和光传输系统。

公开(公告)号：US5966228A

公开(公告)日：1999-10-12

申请号：US756609

申请日：1996-11-26

申请人： Shigeyuki Akiba ,  Shu Yamamoto ,  Masatoshi Suzuki ,  Noboru Edagawa ,  Hidenori Taga

发明人： Shigeyuki Akiba ,  Shu Yamamoto ,  Masatoshi Suzuki ,  Noboru Edagawa ,  Hidenori Taga

IPC分类号： G02F1/35 ,  G02B6/34 ,  H04B10/2507 ,  H04B10/2519 ,  H04B10/2525 ,  H04B10/29 ,  H04B10/291 ,  H04J14/00 ,  H04J14/02 ,  H04B10/18

CPC分类号： H04B10/2935 ,  H04B10/25253 ,  G02B6/29317 ,  G02B6/29394

摘要： An optical transmission system comprises transmission optical fibers 14 connected between an optical transmission terminal 10 and an optical receiving terminal 12 via optical amplifying repeaters 16, and equalizing fiber 18 each connected in each equalizing interval. The equalizing fiber 18 is typically located at the terminal end of each equalizing interval. Each transmission optical fiber 14 is a dispersion-shifted fiber whose wavelength dispersion is substantially zero in a specific band, for example, 1.5 .mu.m. The optical amplifying repeaters 16 include an optical amplifier, and a dispersion compensating optical element having wavelength dispersion characteristics that exhibit an inclination opposite from that of wavelength characteristics of wavelength dispersion of the transmission optical fiber 14 (more specifically, a minus inclination with respect to the wavelength). The dispersion compensating optical element compensates offset values of cumulative wavelength dispersion among different wavelengths. The dispersion compensating optical element can be made by a fiber grating technology.

摘要翻译： 光传输系统包括经由光放大中继器16连接在光传输终端10和光接收终端12之间的传输光纤14，以及均衡光纤18，每个均衡间隔均连接。 均衡纤维18通常位于每个均衡间隔的终端处。 各透射光纤14是在特定频带例如1.5μm的波长色散基本为零的色散位移光纤。 光放大中继器16包括光放大器和具有波长色散特性的色散补偿光学元件，其具有与透射光纤14的波长色散的波长特性相反的倾斜度（更具体地说，相对于 波长）。 色散补偿光学元件补偿不同波长之间的累积波长色散的偏移值。 色散补偿光学元件可以通过光纤光栅技术制成。

公开(公告)号：US5920413A

公开(公告)日：1999-07-06

申请号：US833097

申请日：1997-04-04

申请人： Takayuki Miyakawa ,  Hidenori Taga ,  Shu Yamamoto ,  Shigeyuki Akiba

发明人： Takayuki Miyakawa ,  Hidenori Taga ,  Shu Yamamoto ,  Shigeyuki Akiba

IPC分类号： G02B27/28 ,  G02B6/293 ,  H04B10/07 ,  H04B10/2507 ,  H04B10/27 ,  H04B10/29 ,  H04J14/00 ,  H04J14/02

CPC分类号： H04J14/0201 ,  H04J14/0206

摘要： An optical add/drop multiplexing scheme capable of reducing the degradation of the transmission characteristic due to the beat noises caused by the interference of the fiber grating leakage components. An optical add/drop multiplexing device is formed by a high speed polarization scrambler for entering signal lights with a data modulation at a high speed bit rate applied thereto, and scrambling polarization states of entered signal lights at high speed, and an optical add/drop element for receiving the signal lights with the polarization states scrambled by the high speed polarization scrambler, and carrying out an add/drop multiplexing operation for signal lights in a specific wavelength among received signal lights. The high speed polarization scrambler scrambles the polarization states of the entered signal lights so as to lower a probability for having worst polarization states of signal lights and interference lights, by scrambling the polarization states of the entered signal lights into every possible polarization states at nearly equal probabilities.

摘要翻译： 一种能够降低由于光纤光栅泄漏部件的干扰引起的节拍噪声导致的传输特性劣化的光分插复用方案。 通过高速偏振加扰器形成光分插多路复用装置，用于以高速比特率对数据调制进入信号光，并以高速加扰输入的信号光的偏振状态，以及光分插 用于接收具有由高速偏振加扰器加扰的偏振状态的信号光的元件，并对接收到的信号光中的特定波长的信号光进行分插复用操作。 高速极化扰频器对输入的信号光的极化状态加扰，从而通过将输入的信号光的偏振状态加扰到几乎相等的每个可能的极化状态，降低具有信号光和干涉光的最差极化状态的概率 概率