公开(公告)号：US07477844B2

公开(公告)日：2009-01-13

申请号：US11015228

申请日：2004-12-17

申请人： Ashwin Anil Gumaste ,  Raghu Ramireddy Valisammagari ,  Susumu Kinoshita

发明人： Ashwin Anil Gumaste ,  Raghu Ramireddy Valisammagari ,  Susumu Kinoshita

IPC分类号： H04B10/20

CPC分类号： H04J14/0227 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0206 ,  H04J14/021 ,  H04L12/4645

摘要： An optical network includes an optical ring, a plurality of local nodes, and a data center node. The plurality of local nodes are coupled to the optical ring and each local node is capable of receiving traffic from a local client and associating a transmitter tag with the traffic. The transmitter tag identifies a virtual network of the local client. The local node is further capable of transmitting the traffic on the optical ring.The data center node is also coupled to the optical ring and is capable of receiving traffic transmitted by one of the local nodes and determining a receiver tag for the traffic, based on the transmitter tag associated with the traffic and the local node that transmitted the traffic. The data center node is also capable of associating the selected receiver tag with the traffic and transmitting the traffic on the optical ring.

摘要翻译： 光网络包括光环，多个本地节点和数据中心节点。 多个本地节点耦合到光环，并且每个本地节点能够从本地客户端接收业务并将发射机标签与业务相关联。 发射机标签标识本地客户端的虚拟网络。 本地节点还能够在光环上传输业务。 数据中心节点还耦合到光环，并且能够基于与业务相关联的发射机标签和传输业务的本地节点来接收本地节点之一传输的业务并确定业务的接收者标签 。 数据中心节点还能够将所选择的接收者标签与流量相关联，并将光通信传输到光环上。

公开(公告)号：US07283739B2

公开(公告)日：2007-10-16

申请号：US10158348

申请日：2002-05-29

申请人： Susumu Kinoshita ,  Koji Takeguchi ,  Ashwin Anil Gumaste

发明人： Susumu Kinoshita ,  Koji Takeguchi ,  Ashwin Anil Gumaste

IPC分类号： G02F1/00

CPC分类号： H04Q11/0005 ,  H04Q2011/0015 ,  H04Q2011/0016 ,  H04Q2011/0024 ,  H04Q2011/0092

摘要： An optical network includes an optical ring and at least three subnets. Each subnet includes a plurality of add/drop nodes coupled to the optical ring. The add/drop nodes are operable to passively add a first traffic stream in a first direction on the optical ring and a second traffic stream in a second direction on the optical ring. The first traffic stream comprises different content than the second traffic stream, and the first traffic stream and the second traffic stream are transmitted on the same wavelength. The network also includes a plurality of gateway nodes. The gateway nodes are each coupled to the optical ring at a boundary between neighboring subnets and are operable to selectively pass and terminate wavelengths between subnets to allow wavelength reuse in the subnets.

摘要翻译： 光网络包括光环和至少三个子网。 每个子网包括耦合到光环的多个添加/分出节点。 所述加/减节点可操作以在所述光环上沿第一方向被动地添加第一业务流，并且所述光环上的第二业务流沿第二方向。 第一业务流包括与第二业务流不同的内容，并且以相同的波长发送第一业务流和第二业务流。 该网络还包括多个网关节点。 网关节点各自在相邻子网之间的边界处耦合到光环，并且可操作地选择性地通过和终止子网之间的波长，以允许子网中的波长重用。

公开(公告)号：US20070206493A1

公开(公告)日：2007-09-06

申请号：US11745974

申请日：2007-05-08

申请人： Susumu Kinoshita ,  Koji Takeguchi ,  Satoru Odate ,  Cechan Tian

发明人： Susumu Kinoshita ,  Koji Takeguchi ,  Satoru Odate ,  Cechan Tian

IPC分类号： G01R31/08

CPC分类号： H04J14/0291 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0206 ,  H04J14/0212 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0283

摘要： A flexible open ring optical network includes a plurality of nodes connected by twin or other suitable optical rings. Each node is operable to passively add and passively drop traffic from the rings. The nodes may include a transport element for each ring. The transport elements include an optical splitter element and an optical combiner element. The optical splitter element is operable to passively combine an add signal including local add traffic and a first transport signal including ingress traffic from a coupled optical ring to generate a second transport signal including egress traffic for transmission on the coupled optical ring. The optical combiner element is coupled to the optical splitter element and is operable to passively split a third transport signal including the ingress traffic to generate a drop signal including local drop traffic and a fourth transport signal including the ingress traffic. Protection switching may be provided by selectively openable switches disposed in and distributed around the rings.

公开(公告)号：US07120360B2

公开(公告)日：2006-10-10

申请号：US11031639

申请日：2005-01-06

申请人： Cechan Tian ,  Susumu Kinoshita

发明人： Cechan Tian ,  Susumu Kinoshita

IPC分类号： H04B10/00

CPC分类号： H04J14/0291 ,  H04J14/0283

摘要： An optical access network includes a first ring and a second ring communicating optical signals in opposite directions. The network also includes an access node coupled to both rings that adds traffic in a first wavelength of a first optical signal communicated on the first ring. Furthermore, the network includes a hub node coupled to each ring and coupled to an optical core network. The hub node receives the first optical signal, forwards a first copy of the signal to a first wavelength blocking unit that terminates the traffic in the first wavelength, and forwards a second copy of the signal to a first network interconnection element that forwards the traffic in the first wavelength to the core network. Furthermore, upon detection of an interruption of the traffic in the first wavelength on the first ring, the access node adds the traffic in a second wavelength of a second optical signal communicated on the second ring. In addition, the hub node receives the second optical signal, forwards a first copy of the signal to a second wavelength blocking unit that terminates the traffic in the second wavelength, and forwards a second copy of the signal to a second network interconnection element that forwards the traffic in the second wavelength to the core network.

摘要翻译： 光接入网络包括在相反方向上传送光信号的第一环和第二环。 网络还包括耦合到两个环的接入节点，其增加在第一环上传送的第一光信号的第一波长的业务。 此外，网络包括耦合到每个环并耦合到光核心网络的集线器节点。 集线器节点接收第一光信号，将信号的第一拷贝转发到终止第一波长的业务的第一波长阻塞单元，并将该信号的第二副本转发给转发业务的第一网络互连元件 第一波长到核心网。 此外，在检测到第一环上的第一波长的业务中断时，接入节点将业务加到在第二环上传送的第二光信号的第二波长。 此外，集线器节点接收第二光信号，将信号的第一拷贝转发到终止第二波长的业务的第二波长阻塞单元，并将信号的第二副本转发到转发的第二网络互连元件 流量在第二波长到核心网。

公开(公告)号：US20060222360A1

公开(公告)日：2006-10-05

申请号：US11098720

申请日：2005-04-04

申请人： Ashwin Gumaste ,  Paparao Palacharla ,  Susumu Kinoshita

发明人： Ashwin Gumaste ,  Paparao Palacharla ,  Susumu Kinoshita

IPC分类号： H04B10/00

CPC分类号： H04B10/275 ,  H04B10/032 ,  H04B10/27 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/021 ,  H04J14/0212 ,  H04J14/0275 ,  H04J14/0295

摘要： Providing protection for a network includes establishing a light-trail through a sequence of nodes of an optical network, where the sequence of nodes is coupled by a first fiber and by a second fiber. Traffic is communicated through a plurality of connections of the light-trail, where a connection is operable to communicate traffic from a source node of the sequence of nodes to one or more destination nodes of the sequence of nodes. A failure of the light-trail is detected. A protection light-trail corresponding to the light-trail is established. The traffic of the plurality of connections is communicated through the protection light-trail.

摘要翻译： 为网络提供保护包括通过光网络的节点序列来建立光轨迹，其中节点序列由第一光纤和第二光纤耦合。 业务通过光轨的多个连接进行通信，其中连接可操作以将流量从节点序列的源节点传送到节点序列的一个或多个目标节点。 检测到光轨的故障。 建立对应于轻轨的保护光路。 通过保护光路传送多个连接的通信量。

公开(公告)号：US07110166B2

公开(公告)日：2006-09-19

申请号：US10892121

申请日：2004-07-16

申请人： Miki Onaka ,  Susumu Kinoshita

发明人： Miki Onaka ,  Susumu Kinoshita

IPC分类号： H01S3/00

CPC分类号： H04B10/294 ,  H01S3/06725 ,  H01S3/06758 ,  H01S3/094011 ,  H01S3/094096 ,  H01S3/09415 ,  H01S3/10015 ,  H01S3/1301 ,  H01S3/1305 ,  H01S3/302 ,  H01S2301/02 ,  H01S2301/04 ,  H04B10/2916 ,  H04B10/2942 ,  H04B10/296

摘要： The present invention aims at providing a method for controlling wavelength characteristics of optical transmission powers by Raman amplification, in which the wavelength characteristics of optical transmission powers are automatically compensated without giving any losses to channel lights to thereby improve transmission characteristics, and an apparatus adopting the same. To this end, the method for controlling wavelength characteristics of optical transmission powers by Raman amplification according to present invention supplies Raman pump light to an optical transmission path (Raman amplifying medium); compensates the wavelength characteristics of optical transmission powers caused by transmission of WDM signal light through the optical transmission path, by gain wavelength characteristics of generated Raman amplification; and monitors the wavelength characteristics of optical transmission powers after Raman amplification to thereby control the gain wavelength characteristics of Raman amplification.

摘要翻译： 本发明的目的在于提供一种用于通过拉曼放大来控制光发射功率的波长特性的方法，其中光传输功率的波长特性被自动补偿，而不会对信道灯造成任何损耗，从而提高传输特性，并且采用 相同。 为此，根据本发明的通过拉曼放大来控制光传输功率的波长特性的方法将拉曼泵浦光提供给光传输路径（拉曼放大介质）; 补偿通过光传输路径传输WDM信号光引起的光传输功率的波长特性，通过生成拉曼放大的增益波长特性; 并监测拉曼放大后的光传输功率的波长特性，从而控制拉曼放大的增益波长特性。

公开(公告)号：US20060133803A1

公开(公告)日：2006-06-22

申请号：US11015222

申请日：2004-12-17

申请人： Cechan Tian ,  Susumu Kinoshita

发明人： Cechan Tian ,  Susumu Kinoshita

IPC分类号： H04B10/00

CPC分类号： H04J14/0295 ,  H04B10/032 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0283

摘要： An optical network includes an optical ring capable of transmitting traffic in one of a plurality of wavelengths of an optical signal between a plurality of nodes. The nodes transmit a plurality of working traffic streams in a plurality of working wavelengths. In response to an interruption in a first working traffic stream, a node transmits, in a protection wavelength, a first protection traffic stream that is associated with the first working traffic stream. Furthermore, in response to an interruption in a second working traffic stream, a node transmits, in the protection wavelength, a second protection traffic stream that is associated with the second working traffic stream, such that the first protection traffic stream and the second protection traffic stream share, at different times, the protection wavelength.

摘要翻译： 光网络包括能够以多个节点之间的光信号的多个波长中的一个波长发送业务的光环。 节点以多个工作波长发送多个工作业务流。 响应于第一工作业务流中的中断，节点以保护波长发送与第一工作业务流相关联的第一保护业务流。 此外，响应于第二工作业务流中断，节点以保护波长发送与第二工作业务流相关联的第二保护业务流，使得第一保护业务流和第二保护业务 流分享，在不同的时间，保护波长。

公开(公告)号：US07061666B2

公开(公告)日：2006-06-13

申请号：US10414237

申请日：2003-04-16

申请人： Shinya Inagaki ,  Norifumi Shukunami ,  Susumu Kinoshita ,  Hiroyuki Itou ,  Taiki Kobayashi

发明人： Shinya Inagaki ,  Norifumi Shukunami ,  Susumu Kinoshita ,  Hiroyuki Itou ,  Taiki Kobayashi

IPC分类号： H01S3/00

CPC分类号： H04B10/2942 ,  H01S3/06758 ,  H01S3/1301 ,  H01S3/1305 ,  H04B10/2912 ,  H04B10/2941 ,  H04B2210/003

摘要： An optical amplification device which includes first and second optical amplifiers, and a controller. The first optical amplifier receives a light and amplifies the received light. The second optical amplifier receives the light amplified by the first optical amplifier, and amplifies the received light. When a level of the light received by the first optical amplifier changes by Δ, the controller controls a level of the light received by the second optical amplifier to change by approximately −Δ. In various embodiments, the controller causes the sum of the gains of the first and second optical amplifiers to be constant. In other embodiments, the optical amplification device includes first and second optical amplifier and a gain adjustor. The gain adjustor detects a deviation in gain of the first optical amplifier from a target gain, and adjusts the gain of the second optical amplifier to compensate for the detected deviation.

公开(公告)号：US07027210B2

公开(公告)日：2006-04-11

申请号：US10448579

申请日：2003-05-29

申请人： Cechan Tian ,  Susumu Kinoshita

发明人： Cechan Tian ,  Susumu Kinoshita

IPC分类号： H01S3/00 ,  H04B10/00

CPC分类号： H04B10/0731 ,  H04J14/0221

摘要： A method for determining gain for an optical signal includes measuring a first power level that is an output power level of an optical signal at a first optical node, communicating the optical signal to a second optical node, and communicating the first power level to the second optical node in an optical supervisory channel of the optical signal. The method further includes receiving the optical signal at the second optical node, measuring a second power level of the optical signal at the second optical node, and determining a gain for the optical signal based on the first and second power levels.

公开(公告)号：US07009761B2

公开(公告)日：2006-03-07

申请号：US10448634

申请日：2003-05-29

申请人： Cechan Tian ,  Susumu Kinoshita

发明人： Cechan Tian ,  Susumu Kinoshita

IPC分类号： H01S3/00

CPC分类号： H04B10/2942 ,  H01S3/1301

摘要： A method for correcting power tilt in an optical signal includes tapping off a representative portion of an optical signal and separating the representative portion into a first signal and a second signal. The first signal includes a first wavelength band and the second signal includes a second wavelength band different from the first wavelength band, wherein each wavelength band includes more than one channel. The method also includes detecting a power level of the first signal, detecting a power level of the second signal, and comparing the power levels of the first and second signals. The method further includes determining a power tilt for the optical signal based on the comparison and adjusting an amplifier gain based on the power tilt.

摘要翻译： 一种用于校正光信号中的功率倾斜的方法包括：抽出光信号的代表部分，并将代表部分分离成第一信号和第二信号。 第一信号包括第一波长带，第二信号包括不同于第一波长带的第二波长带，其中每个波长带包括多个信道。 该方法还包括检测第一信号的功率电平，检测第二信号的功率电平，以及比较第一和第二信号的功率电平。 该方法还包括基于比较确定光信号的功率倾斜并且基于功率倾斜来调整放大器增益。