公开(公告)号：US06915075B1

公开(公告)日：2005-07-05

申请号：US09643993

申请日：2000-08-23

Applicant: Magnus Öberg ,  Nigel Robert Wood ,  Jonas Hemgren

Inventor： Magnus Öberg ,  Nigel Robert Wood ,  Jonas Hemgren

IPC: H04J14/02 ,  H04B10/18 ,  H04J14/00

CPC classification number: H04J14/0297 ,  H04J14/0279 ,  H04J14/0293

Abstract: An optical network comprises a bidirectional link connecting two nodes (1) through two optical fibers (3). Optical output signals from optical transmitters (7) in a node are provided to transponders (11) issuing optical signals of well-defined wavelengths to a power combiner (13), from which optical signals are forwarded to the other node on the respective fiber. The network can have protection for failures of various components. Thus, a spare transponder (21) can receive the optical output signals of an optical transmitter (7) in the case of a failure of an ordinary transponder (11). The spare transponder (21) is also connected to the combiner (13). The optical transmitters (7) and receivers (9) can be duplicated by providing spare transmitters (7′) and spare receivers (9′). Various arrangements can be used for connecting the output of a transmitter to an ordinary transponder or the spare transponder. For example, cross-bar switches (17, 19) can be arranged at the outputs of a pair of an ordinary transmitter and a spare transmitter and at the inputs of a pair of an ordinary receiver and a spare receiver. For a node having N−1 ordinary transmitters a N:1 switch (23) is then arranged at the input of the spare transponder (21).

Abstract translation: 光网络包括通过两个光纤（3）连接两个节点（1）的双向链路。 一个节点中的光发射机（7）的光输出信号被提供给转发器（11）向功率组合器（13）发出明确定义的波长的光信号，光信号从该光信号转发到相应光纤上的另一个节点。 网络可以保护各种组件的故障。 因此，在普通应答器（11）发生故障的情况下，备用转发器（21）可以接收光发送器（7）的光输出信号。 备用应答器（21）也连接到组合器（13）。 可以通过提供备用发射机（7'）和备用接收机（9'）来复制光发射机（7）和接收机（9）。 可以使用各种布置来将发射机的输出连接到普通的应答器或备用发射机应答器。 例如，横杆开关（17,19）可以布置在一对普通发射机和备用发射机的输出端以及一对普通接收机和备用接收机的输入端。 对于具有N-1个普通发射机的节点，N：1交换机（23）然后被布置在备用发射机应答器（21）的输入端。

公开(公告)号：US06907195B2

公开(公告)日：2005-06-14

申请号：US09939784

申请日：2001-08-28

Applicant: Zhengchen Yu ,  William Shieh ,  Thomas R. Clark, Jr. ,  Vladimir Petricevic

Inventor： Zhengchen Yu ,  William Shieh ,  Thomas R. Clark, Jr. ,  Vladimir Petricevic

IPC: H04B10/155 ,  H04J14/02 ,  G02F1/00

CPC classification number: H04J14/0221 ,  H04B10/506 ,  H04J14/02 ,  H04J14/0226 ,  H04J14/0246 ,  H04J14/0279 ,  H04J14/0297

Abstract: A wavelength division multiplexed (WDM) optical network includes a plurality of optical transmitters, each optical transmitter generating a data signal sent over a respective one of a plurality of signal channels, the plurality of signal channels being divided into a number of sub-bands where each sub-band includes at least two signal channels, and a plurality of substitute signal transmitters, the number of substitute signal transmitters being equal to the number of sub-bands, each substitute signal transmitter generating a substitute signal which provides loading in a corresponding sub-band. The WDM optical network also includes a combining circuit which combines the data signals output from the plurality of optical transmitters and the substitute signals output from the plurality of substitute signal transmitters into a WDM signal, and an optical transmission fiber which receives the WDM signal from the combining circuit.

Abstract translation: 波分多路复用（WDM）光网络包括多个光发射机，每个光发射机产生通过多个信号信道中的相应一个发送的数据信号，所述多个信号信道被划分成多个子带， 每个子带包括至少两个信号信道和多个替代信号发射机，替代信号发射机的数目等于子带数，每个替代信号发射机产生替代信号，该替代信号提供相应子载波的加载 -带。 WDM光网络还包括组合电路，其将从多个光发射机输出的数据信号和从多个替代信号发射机输出的替代信号组合成WDM信号，以及光传输光纤，其从 组合电路。

公开(公告)号：US20050123297A1

公开(公告)日：2005-06-09

申请号：US11037073

申请日：2005-01-19

Applicant: Kenji Watanabe

Inventor： Kenji Watanabe

IPC: H04B10/03 ,  H04B10/032 ,  H04B10/07 ,  H04B10/524 ,  H04J14/00 ,  H04J14/02 ,  H04L12/70

CPC classification number: H04J14/029 ,  H04B10/032 ,  H04J14/0279 ,  H04J14/0294 ,  H04J14/0297

Abstract: A transmission apparatus that receives an optical signal by selecting any one of a plurality of provided optical signal transmission paths through protection control is configured to include a plurality of optical signal outputting sections that output the optical signals transmitted through said optical signal transmission paths respectively as optical signals having wavelengths that are different from each other, a wavelength selective optical switch capable of selectively outputting light of a wavelength corresponding to any one of the optical signals coming from the optical signal outputting sections on the basis of the frequency of a controlling frequency signal, and an optical switch controlling section that supplies said controlling frequency signal to the wavelength selective optical switch so as to output the optical signal coming from the optical signal transmission path side that is selected by said protection control among the optical signals coming from the optical signal outputting sections.

Abstract translation: 通过保护控制通过选择多个提供的光信号传输路径中的任何一个来接收光信号的发送装置被配置为包括多个光信号输出部分，其将通过所述光信号传输路径传输的光信号分别作为光 具有彼此不同的波长的信号，能够根据控制频率信号的频率选择性地输出与来自光信号输出部的任何一个光信号相对应的波长的光的波长选择光开关， 以及光开关控制部分，其将所述控制频率信号提供给波长选择光开关，以便在来自光信号的光信号中输出来自由所述保护控制选择的光信号传输路径侧的光信号 输出部分。

公开(公告)号：US20050047787A1

公开(公告)日：2005-03-03

申请号：US10647935

申请日：2003-08-26

Applicant: Charles Norman

Inventor： Charles Norman

IPC: H04J14/02

CPC classification number: H04J14/0293 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0279 ,  H04J14/0283

Abstract: A communication system includes an optical network, a first POP, and a second POP. The first POP receives user communications from a first user system and transfers the user communications to the optical network over a first optical wavelength. The optical network transfers first user communications to the second POP over the first optical wavelength. The second POP transfers the user communications to a second user system. Responsive to a problem with the transfer of the user communications over the first optical wavelength, the first POP transfers the user communications to the optical network over a second optical wavelength, and the optical network transfers the user communications to the second POP over the second optical wavelength.

Abstract translation: 通信系统包括光网络，第一POP和第二POP。 第一POP从第一用户系统接收用户通信，并通过第一光波长将用户通信传送到光网络。 光网络在第一光波长上将第一用户通信传送到第二POP。 第二POP将用户通信传送到第二用户系统。 响应于在第一光波长上传送用户通信的问题，第一POP通过第二光波长将用户通信传送到光网络，并且光网络将用户通信通过第二光学传输到第二POP 波长。

公开(公告)号：US20050025486A1

公开(公告)日：2005-02-03

申请号：US10910424

申请日：2004-08-02

Applicant: Johnny Zhong ,  Steve Wang ,  Frank Levinson

Inventor： Johnny Zhong ,  Steve Wang ,  Frank Levinson

IPC: H04B10/24 ,  H04J14/02

CPC classification number: H04B10/2503 ,  H04J14/02 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0279

Abstract: Optical systems route signals bi-directionally on a single fiber. The bidirectional data transmission over a single fiber can be used for WDM systems, including for example both CWDM and DWDM systems. The systems can include devices, such as interleavers, bandpass filter, and circulators, which are used in pairs at opposite ends of an optical fiber to couple signals into a bidirectional signal over the optical fiber. The use of a circulator enables signals traveling in opposite directions on the single fiber to occupy the same wavelength channels.

Abstract translation: 光学系统在单个光纤上双向路由信号。 单个光纤上的双向数据传输可用于WDM系统，包括例如CWDM和DWDM系统。 这些系统可以包括诸如交织器，带通滤波器和循环器的器件，其在光纤的相对端成对使用以将信号耦合到光纤上的双向信号中。 使用循环器使得在单个光纤上沿相反方向行进的信号能够占据相同的波长信道。

公开(公告)号：US20040247316A1

公开(公告)日：2004-12-09

申请号：US10793546

申请日：2004-03-03

Applicant: UBI Systems, Inc.

Inventor： Alexander I. Soto ,  Walter G. Soto

IPC: H04J014/00

CPC classification number: H04J14/02 ,  H04B10/071 ,  H04J14/0226 ,  H04J14/0247 ,  H04J14/0252 ,  H04J14/0279 ,  H04J14/0282

Abstract: Abstract of the DisclosureA system and method for multiplexing an in-service optical time domain reflectometry (ISOTDR) session using the same wavelength as the data traffic for point-to-point or point-to-multipoint optical fiber networks while not impacting data transmission is disclosed.

Abstract translation: 摘要公开一种使用与点对点或点对多点光纤网络的数据流量相同的波长来复用正在使用的光时域反射（ISOTDR）会话而不影响数据传输的系统和方法 被披露。

公开(公告)号：US20040208502A1

公开(公告)日：2004-10-21

申请号：US10261580

申请日：2002-10-02

Applicant: FUJITSU LIMITED

Inventor： Masami Doukai

IPC: H04B010/08 ,  H04J014/02

CPC classification number: H04J14/0227 ,  H04J14/0226 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0279

Abstract: A WDM (Wavelength Divisional Multiplex) device is provided in which a client signal having a band that is greater than a band of a wavelength used for wavelength-division multiplexing is allocated a plurality of wavelengths and is transmitted as a wavelength-division multiplexed signal. The WDM device includes a used-band detecting part for detecting a used-band that is used by the client signal supplied from a client device. The used-band is detected from a path layer of the client signal using set-up information contained in the path layer of the client signal. The WDM device also includes a mapping part for mapping the detected used-band onto wavelengths used for wavelength-division multiplexing.

Abstract translation: 提供了一种WDM（波分复用）​​装置，其中具有大于波分复用的波长带的客户端信号被分配多个波长并作为波分复用信号发送。 WDM设备包括用于检测由客户端设备提供的客户端信号使用的使用频带的使用频带检测部分。 使用客户端信号的路径层中包含的设置信息，从客户端信号的路径层检测使用频带。 WDM设备还包括用于将检测到的使用频带映射到用于波分复用的波长上的映射部分。

公开(公告)号：US20040202473A1

公开(公告)日：2004-10-14

申请号：US10809929

申请日：2004-03-26

Applicant: FUJITSU LIMITED

Inventor： Kentaro Nakamura ,  Takafumi Terahara

IPC: H04J014/02

CPC classification number: H04J14/02 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0279

Abstract: The present invention provides a WDM transmission system that can multiplex/demultiplex and transmit wavelength division multiplexing signals, where signal lights have a different signal bandwidth, in a status without much deterioration of transmission quality. For the WDM signals P0, 10 Gbit/s signals with a 25 GHz bandwidth are arrayed in odd channels on a grid with a 50 GHz interval, and 40 Gbit/s signals with a 75 GHz bandwidth are arrayed in even channels. The WDM signals P0 are demultiplexed by the interleaver 1, then are demultiplexed by the interleavers 2 and 3. The central frequency of the transmission bands-of the ports A1 and B1 are shifted from the central frequency of the 10 Gbit/s signals so that the overlapping portion of the transmission band of the ports A1 and B1 substantially match the signal band of the channel ch null4i-2null (i is an integer of 1 or higher). By this, only 40 Gbit/s signals in the channel ch null4i-2null are output from the port B1. The overlapping portion of the transmission band of the other port is also set so as to match with the signal band of the signal to be output in the same way.

Abstract translation: 本发明提供了一种WDM传输系统，其能够以不影响传输质量的恶化的状态对信号光具有不同信号带宽的波分复用信号进行复用/解复用和发送。 对于WDM信号P0，具有25GHz带宽的10Gbit / s信号在具有50GHz间隔的电网上的奇数通道中排列，并且在偶数通道中排列具有75GHz带宽的40Gbit / s信号。 WDM信号P0由交织器1解复用，然后由交织器2和3解复用。端口A1和B1的传输频带的中心频率从10Gbit / s信号的中心频率偏移，使得 端口A1和B1的传输频带的重叠部分基本上与信道ch [4i-2]（i为1或更高的整数）的信号频带匹配。 由此，从端口B1输出信道ch [4i-2]中仅40Gbit / s的信号。 另一端口的传输频带的重叠部分也被设置为与以相同的方式输出的信号的信号频带相匹配。

公开(公告)号：US06748179B2

公开(公告)日：2004-06-08

申请号：US09801103

申请日：2001-03-07

Applicant: Michael Lange ,  Edward Tegge ,  John DeSalvo

Inventor： Michael Lange ,  Edward Tegge ,  John DeSalvo

IPC: H04B1000

CPC classification number: H04B10/07955 ,  H04B10/077 ,  H04J14/0279 ,  H04J14/0282 ,  H04J14/0295 ,  H04J14/0297

Abstract: The system and method of the present invention is operative to monitor the performance of an optical communications channel. An optical splitter splits a wavelength division multiplexed (WDM) optical communications signal into a low power WDM signal onto a back-up path, where a tunable filter sweeps the optical communications channels, while a monitoring circuit monitors the optical communications channels for performance. Optical power can be stored and subsequently displayed, providing an optical spectrum analysis of the signal.

Abstract translation: 本发明的系统和方法可操作以监视光通信信道的性能。 光分路器将波分复用（WDM）光通信信号分解成低功率WDM信号到备用路径，其中可调滤波器扫描光通信信道，而监控电路监视光通信信道的性能。 可以存储和随后显示光功率，提供信号的光谱分析。

公开(公告)号：US20040081459A1

公开(公告)日：2004-04-29

申请号：US10421146

申请日：2003-04-24

Applicant: Agilent Technologies, Inc.

Inventor： Alexander Mumm ,  Albrecht Schroth ,  Horst Nill

IPC: H04B010/08

CPC classification number: H04J14/0226 ,  H04B10/071 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0279

Abstract: A communications network is described comprising a cable and a remote test unit being coupled to the cable. Optical data signals are transmitted with a first wavelength on the cable. The remote test unit is adapted to transmit optical test signals as well as optical result messages with a second wavelength to the cable.

Abstract translation: 描述了通信网络，其包括耦合到电缆的电缆和远程测试单元。 光缆上的光数据信号以第一波长传输。 远程测试单元适用于向光缆传输具有第二波长的光学测试信号以及光学结果消息。