公开(公告)号：WO0205438A3

公开(公告)日：2002-05-23

申请号：PCT/US0121232

申请日：2001-07-05

Applicant: SYCAMORE NETWORKS INC

Inventor： PATEL NAIMISH ,  NARVAEZ PAOLO ,  AZIZOGLU MURAT

IPC: H04B10/02 ,  H04B10/08 ,  H04J14/02

CPC classification number: H04J14/0291 ,  H04B10/0771 ,  H04B10/0773 ,  H04B2210/071 ,  H04B2210/078 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0279 ,  H04J14/0283 ,  H04J14/0284 ,  H04J14/0295 ,  H04J14/0297

Abstract: A system is provided for protecting a wavelength division multiplexing optical communications network against communication failures at the link, wavelength (404, 414) and fiber (402, 412) layers. The system includes failure detectors for detecting communication failures of the network and for generating failure signals in response thereto, and protection switching elements for receiving the failure signals and controlling the protection switching in response thereto. The system also includes a first set of interlayer communication channels within each of the link, wavelength (404, 414) and fiber (402, 412) layers for sending the failure signals between the failure detectors and the protection switching elements, and a second set of interlayer communication channels between adjacent ones of the link, wavelength (404, 414) and fiber (402, 412) layers for sending the failure signals between the failure detectors and the protection switching elements.

Abstract translation: 提供了一种用于保护波分复用光通信网络以防止链路，波长（404,414）和光纤（402,412）层处的通信故障的系统。 该系统包括用于检测网络的通信故障并响应于其产生故障信号的故障检测器，以及用于接收故障信号并响应于此来控制保护切换的保护开关元件。 该系统还包括在每个链路，波长（404,414）和光纤（402,412）层内的第一组层间通信信道，用于在故障检测器和保护开关元件之间发送故障信号，以及第二组 用于在故障检测器和保护开关元件之间发送故障信号的相邻链路之间的层间通信信道，波长（404,414）和光纤（402,412）层。

公开(公告)号：WO01061937A1

公开(公告)日：2001-08-23

申请号：PCT/JP2000/000917

申请日：2000-02-18

IPC: H04J14/02 ,  H04L12/24 ,  H04Q11/04 ,  H04L12/437

CPC classification number: H04J14/0294 ,  H04J14/0227 ,  H04J14/0241 ,  H04J14/0283 ,  H04J14/0291 ,  H04J2203/0032 ,  H04J2203/0042 ,  H04J2203/006 ,  H04L41/0663 ,  H04Q11/0478

Abstract: A method of switching an optical bidirectional ring composed of a plurality of nodes. At an add node into which a signal is inserted, signals are simultaneously inserted into a currently used route and an auxiliary route in the opposite direction to the currently used route for a path where no momentary interruption is set. At a drop node from which a signal of a designated path is extracted, the signal extracted from the currently used route when a failure occurs in the path of the currently used route is switched without any momentary interruption to the signal extracted from the auxiliary route. When the switching with no momentary interruption is unnecessary at the drop node due to a failure, at the add node, the signal of the path of no momentary interruption is not inserted into the momentary route, but the folded-back path is passed through the auxiliary route. As a result, the UPSR system can be fused into the BLSR system to realize a path of no momentary interruption by the BLSR system. Thus, it is possible to have the two advantages of the line capacity efficiency and the line reliability and to decrease the memory capacity.

Abstract translation: 一种切换由多个节点组成的光双向环的方法。 在其中插入信号的添加节点，信号被同时插入到当前使用的路由中，并且辅助路由与当前使用的路由相反，用于不设置瞬时中断的路径。 在提取指定​​路径的信号的丢弃节点处，在从当前使用的路线的路径中发生故障时从当前使用的路线提取的信号切换，而不会从辅助路线提取的信号中断。 当由于故障而在下降节点不需要瞬间中断的切换时，在加法节点处，不存在瞬时中断的路径的信号不被插入到瞬时路由中，而是折叠路径通过 辅路 因此，UPSR系统可以融合到BLSR系统中，实现BLSR系统没有瞬间中断的路径。 因此，可以具有线路容量效率和线路可靠性的两个优点，并且降低存储器容量。

公开(公告)号：WO01033756A2

公开(公告)日：2001-05-10

申请号：PCT/IL2000/000706

申请日：2000-11-02

IPC: H04B10/00 ,  H04B10/02 ,  H04B10/08 ,  H04Q11/00 ,  H04J14/00

CPC classification number: H04Q11/0062 ,  H04B10/00 ,  H04J14/0279 ,  H04J14/0291 ,  H04Q2011/0081 ,  H04Q2011/0083

Abstract: An optical transmission system comprising a plurality of telecommunication channels, characterized in that when a failure occurs in one or more of said telecommunication channels, a continuous operation of the non-failing telecommunication channels is enabled, provided that the overall transmitted energy in said non-failing telecommunication channels exceeds a pre-defined threshold.

Abstract translation: 一种包括多个电信信道的光传输系统，其特征在于，当在一个或多个所述电信信道中发生故障时，能够使所述非故障电信信道的连续操作成立，只要所述非电信信道中的总发射能量， 失败的电信渠道超过预定义的门槛。

公开(公告)号：WO00058832A1

公开(公告)日：2000-10-05

申请号：PCT/US1999/015897

申请日：1999-07-14

IPC: H04B10/02 ,  H04B10/20 ,  H04J3/00 ,  H04J14/00 ,  H04J14/02 ,  H04Q11/00 ,  G06F11/00

CPC classification number: H04Q11/0062 ,  H04J14/0283 ,  H04J14/0291 ,  H04J14/0295 ,  H04Q2011/0081

Abstract: A network (21, 21') is maintained functional in the presence of a wide range of faults (120), including physical fiber cuts, transmission impairments creating signal quality degradation, and failure of equipment modules (20), for example, transceivers, using a common control and backup channel (36), either alone or in combination with fiber loopback protection (22-1, 22-2) or wavelength loopback protection ( lambda C), or fiber loopback protection (21-1, 22-2) or wavelength loopback protection ( lambda C) alone. Systems constructed according to the invention require only a single transceiver (34) per wavelength at each node (20) that accesses that wavelength. The invention is equally applicable to type 1 nodes (24), which drop and add a single, predetermined wavelength, and to type 2 nodes (28) which have the capability to drop and add any subset of the wavelengths employed in the network (21, 21').

Abstract translation: 存在广泛的故障（120）的网络（21,21'）保持功能，包括物理光纤切断，产生信号质量劣化的传输损伤和设备模块（20）的故障，例如收发器， 使用公共控制和备用通道（36），单独或与光纤环回保护（22-1,22-2）或波长环回保护（λC）或光纤环回保护（21-1,22-2） ）或波长环回保护（lambda C）。 根据本发明构造的系统在访问该波长的每个节点（20）处仅需要每个波长的单个收发器（34）。 本发明同样适用于丢弃和添加单个预定波长的类型1节点（24），并且具有能够丢弃并添加网络中使用的波长的任何子集的类型2节点（28）（21） ，21'）。

公开(公告)号：WO0035105A2

公开(公告)日：2000-06-15

申请号：PCT/US9926545

申请日：1999-11-10

Applicant: CHORUM TECHNOLOGIES INC

Inventor： LIU JIAN-YU ,  WU KUANG-YI

IPC: G02B6/34 ,  G02F1/31 ,  H04B10/00 ,  H04B10/02 ,  H04B10/28 ,  H04J14/00 ,  H04J14/02 ,  H04Q11/00 ,  H04B

CPC classification number: H04J14/0289 ,  G02B6/272 ,  G02B6/29302 ,  G02B6/29361 ,  G02B6/29395 ,  G02B6/29397 ,  G02F1/31 ,  H04B10/032 ,  H04J14/0208 ,  H04J14/0209 ,  H04J14/0212 ,  H04J14/0213 ,  H04J14/0279 ,  H04J14/0283 ,  H04J14/0291 ,  H04Q11/0003 ,  H04Q11/0005 ,  H04Q2011/0026 ,  H04Q2011/0032 ,  H04Q2011/0035

Abstract: A system for dealing with faults in wavelength division multiplexed (WDM) optical communications between two terminals (1, 2) connected by at least two optical fibers (11, 12) monitors the status of communications over both optical fibers. If both optical fibers (11, 12) are operating normally, a first set of channels is routed over the first optical fiber (11) and a second set of channels (which is mutually exclusive of the first set of channels) is routed over the second optical fiber (12). However, if a fault is detected in either optical fiber (11, 12), the first terminal (1) combines the first and second sets of channels and routes the combined channels over the remaining optical fiber to the second terminal (2). The second terminal (2) separates the combined channels to recreate the first and second sets of channels. Wavelength slicers (101-104) can be used to multiplex and demultiplex the channels at both terminals. This architecture allows the first and second sets of channels to be interdigitally spaced.

Abstract translation: 用于处理由至少两个光纤（11,12）连接的两个终端（1,2）之间的波分复用（WDM）光通信中的故障的系统监视两个光纤上的通信状态。 如果两根光纤（11,12）都正常工作，则第一组信道在第一光纤（11）上路由，并且第二组信道（其与第一组信道互斥）路由在第一组光纤 第二光纤（12）。 然而，如果在任一光纤（11,12）中检测到故障，则第一终端（1）组合第一组信道和第二组信道，并将组合的信道在其余的光纤上路由到第二终端（2）。 第二终端（2）分离组合的频道以重新创建第一和第二组频道。 波长限幅器（101-104）可用于复用和解复用两端的信道。 这种结构允许第一组和第二组通道间隔开。

公开(公告)号：WO9725829A3

公开(公告)日：1997-10-23

申请号：PCT/US9619919

申请日：1996-12-23

Applicant: MCI COMMUNICATIONS CORP

Inventor： FEE JOHN A

IPC: H04M3/22 ,  H04Q3/52 ,  H04Q11/00

CPC classification number: H04J14/0297 ,  H04J14/0279 ,  H04J14/0291 ,  H04J14/0295 ,  H04Q11/0062 ,  H04Q2011/0009 ,  H04Q2011/0011 ,  H04Q2011/0043 ,  H04Q2011/0052 ,  H04Q2011/0081 ,  H04Q2011/0083

Abstract: A system and method for photonic facility and line protection switching in an optical network to permit fault tolerant operation. The optical network comprises components whose operation is monitored by a controller. If the controller determines an optical transmission line in a single path has failed, the controller will re-route the signal path through a spare, or protect component. Alternatively, the controller can re-route the signal path through a frequency translator and another optical transmission line.

公开(公告)号：WO1996019884A1

公开(公告)日：1996-06-27

申请号：PCT/SE1995001490

申请日：1995-12-11

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) ,  ALMSTRÖM, Erland

Inventor： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

IPC: H04J14/02

CPC classification number: H04J14/0291 ,  H04J14/0204 ,  H04J14/0206 ,  H04J14/021 ,  H04J14/0212 ,  H04J14/0283 ,  H04Q11/0062 ,  H04Q11/0066 ,  H04Q2011/0009 ,  H04Q2011/0043 ,  H04Q2011/0081 ,  H04Q2011/0083 ,  H04Q2011/0092

Abstract: The present invention discloses a method of configuring subnodes, or configuring a system of subnodes, in an optical network ring against both node and fiber failure by means of OADM, Optical Add Drop Multiplexer. The network comprises a working ring and a stand-by ring and each subnode includes selective optical filter means, optical 2x2 switch means and optical amplifier means. The method and the system is further comprising the steps of monitoring the inputs and outputs of each subnode at the working and stand-by rings by means of monitor device means, which are generating alarm signals upon detection of signal loss at a subnode. As a response to the alarm signal the state of the subnode, which causes the alarm signal, is transferred from a first state into one of a number of possible conditions as a function of the generated alarm signal, and thereby selecting a switch configuration for the subnode according to the new state to clear the error detected.

Abstract translation: 本发明公开了一种通过OADM，Optical Add Drop Multiplexer，配置光网络环境中的子节点或配置节点和光纤故障两种节点和光纤故障的子节点系统的方法。 网络包括工作环和备用环，每个子节点包括选择性滤光器装置，光学2x2开关装置和光放大器装置。 所述方法和系统还包括以下步骤：借助于在子节点检测到信号丢失时产生报警信号的监视器装置来监视工作和待机环路处的每个子节点的输入和输出。 作为对报警信号的响应，导致报警信号的子节点的状态根据生成的报警信号从第一状态转移到多个可能状态中的一个状态，从而选择用于 subnode根据新状态清除检测到的错误。

公开(公告)号：WO2016192784A1

公开(公告)日：2016-12-08

申请号：PCT/EP2015/062306

申请日：2015-06-02

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Inventor： IOVANNA, Paola ,  TESTA, Francesco

IPC: H04J14/02 ,  H04Q11/00

CPC classification number: H04J14/0283 ,  H04J14/0291 ,  H04J14/0297

Abstract: A transport network (30) is configured to connect one or more optical rings (10) of optical add and drop devices (32) with one or more digital units (34) in a radio access network. The transport network (30) comprises a first electronic cross- connect (36) and a second electronic cross-connect (38). A switch (40) is provided for connecting the first electronic cross-connect (36) and/or the second electronic cross-connect (38) to the one or more digital units (34). The first and second electronic cross-connects (36, 38) are each coupled to at least one of the one or more optical rings (10) of optical add and drop devices (32).

Abstract translation: 传输网络（30）被配置为将无线接入网络中的一个或多个光学添加和丢弃设备（32）的一个或多个光环（10）与一个或多个数字单元（34）连接。 传输网络（30）包括第一电子交叉连接（36）和第二电子交叉连接（38）。 提供了一个开关（40），用于将第一电子交叉连接（36）和/或第二电子交叉连接（38）连接到一个或多个数字单元（34）。 第一和第二电子交叉连接器（36,38）各自耦合到光学分插装置（32）的一个或多个光环（10）中的至少一个。

公开(公告)号：WO2016038463A3

公开(公告)日：2016-08-18

申请号：PCT/IB2015001999

申请日：2015-09-11

Applicant: UNIV ARIZONA ,  UNIV COLUMBIA

Inventor： KILPER DANIEL ,  BERGMAN KEREN ,  ZUSSMAN GIL ,  BIRAND BERK

IPC: H04J14/00 ,  H04J14/02 ,  H04J14/08

CPC classification number: H04J14/0212 ,  H04B10/0795 ,  H04B10/11 ,  H04J14/0221 ,  H04J14/0242 ,  H04J14/0291 ,  H04Q11/0005 ,  H04Q2011/0016

Abstract: An optical communication system includes a plurality of optical system nodes, a plurality of optical space switches and a plurality of optical fibers. The plurality of optical system nodes each includes at least one reconfigurable optical add/drop multiplexer (ROADM). The optical system nodes each have at least one client side port and at least one line side port. Each optical space switch is operatively coupled to the line side port of one of the plurality of optical system nodes. Each of the optical fibers couples one of the optical space switches to another of the optical space switches.

Abstract translation: 一种光通信系统包括多个光系统节点，多个光空间交换机和多个光纤。 多个光学系统节点各自包括至少一个可重新配置的光分插复用器（ROADM）。 每个光学系统节点具有至少一个客户端侧端口和至少一个线路侧端口。 每个光学空间开关可操作地耦合到多个光学系统节点之一的线路侧端口。 每个光纤将一个光空间交换机耦合到另一个光空间交换机。

公开(公告)号：WO2016038463A2

公开(公告)日：2016-03-17

申请号：PCT/IB2015/001999

申请日：2015-09-11

Applicant: THE ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONA ,  THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK

Inventor： KILPER, Daniel ,  BERGMAN, Keren ,  ZUSSMAN, Gil ,  BIRAND, Berk

IPC: H04J14/06 ,  G02F1/295

CPC classification number: H04J14/0212 ,  H04B10/0795 ,  H04B10/11 ,  H04J14/0221 ,  H04J14/0242 ,  H04J14/0291 ,  H04Q11/0005 ,  H04Q2011/0016

Abstract: An optical communication system includes a plurality of optical system nodes, a plurality of optical space switches and a plurality of optical fibers. The plurality of optical system nodes each includes at least one reconfigurable optical add/drop multiplexer (ROADM). The optical system nodes each have at least one client side port and at least one line side port. Each optical space switch is operatively coupled to the line side port of one of the plurality of optical system nodes. Each of the optical fibers couples one of the optical space switches to another of the optical space switches.

Abstract translation: 光通信系统包括多个光学系统节点，多个光学空间开关和多个光纤。 所述多个光学系统节点各自包括至少一个可重新配置的光分插复用器（ROADM）。 光学系统节点各自具有至少一个客户侧端口和至少一个线路侧端口。 每个光学空间开关可操作地耦合到多个光学系统节点之一的线路侧端口。 每个光纤将一个光学空间开关连接到另一个光学空间开关。