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1.发明授权公开(公告)号：US06614956B2
公开(公告)日：2003-09-02
申请号：US10044909
申请日：2002-01-15
IPC分类号： G02B628
CPC分类号： H04B10/2503 , H04B10/0773 , H04B10/0775 , H04B2210/078 , H04J14/0204 , H04J14/0205 , H04J14/0206 , H04J14/0216 , H04J14/0226 , H04J14/0246 , H04J14/025 , H04J14/0279 , H04J14/0283 , H04J14/0284
摘要： The present invention provides a bidirectional wavelength division multiplexed optical communication system having bidirectional optical service channels. The bidirectional WDM optical communication system includes a bidirectional optical waveguide configured to carry a bidirectional optical communication signal comprising counterpropagating WDM optical signals. Each WDM optical signal includes plural optical channels and an optical service channel. A bidirectional optical add-drop multiplexer optically communicates with the waveguide. A first optical service channel selector optically communicates with the first bidirectional optical add-drop multiplexer input/output port. The first optical service channel selector is configured to separate the first optical service channel from the first WDM optical communication signal such that the first WDM signal enters the first input/output port of the bidirectional optical add-drop multiplexer and the first optical service channel is routed to a service channel module. Similarly, a second optical service channel selector optically communicates with the second input/output port of the bidirectional optical add-drop multiplexer and routes the second optical service channel to a service channel module. The bidirectional WDM optical communication system may advantageously by deployed in metropolitan networks requiring high volumes of add-drop multiplexing.
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2.发明授权公开(公告)号：US06339663B1
公开(公告)日：2002-01-15
申请号：US09742220
申请日：2000-12-22
IPC分类号： G02B628
CPC分类号： H04B10/2503 , H04B10/0773 , H04B10/0775 , H04B2210/078 , H04J14/0204 , H04J14/0205 , H04J14/0206 , H04J14/0216 , H04J14/0226 , H04J14/0246 , H04J14/025 , H04J14/0279 , H04J14/0283 , H04J14/0284
摘要： The present invention provides a bidirectional wavelength division multiplexed optical communication system having bidirectional optical service channels. The bidirectional WDM optical communication system includes a bidirectional optical waveguide configured to carry a bidirectional optical communication signal comprising counterpropagating WDM optical signals. Each WDM optical signal includes plural optical channels and an optical service channel. A bidirectional optical add-drop multiplexer optically communicates with the waveguide. A first optical service channel selector optically communicates with the first bidirectional optical add-drop multiplexer input/output port. The first optical service channel selector is configured to separate the first optical service channel from the first WDM optical communication signal such that the first WDM signal enters the first input/output port of the bidirectional optical add-drop multiplexer and the first optical service channel is routed to a service channel module. Similarly, a second optical service channel selector optically communicates with the second input/output port of the bidirectional optical add-drop multiplexer and routes the second optical service channel to a service channel module. The bidirectional WDM optical communication system may advantageously by deployed in metropolitan networks requiring high volumes of add-drop multiplexing.
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3.发明授权Protection switching in bidirectional WDM optical communication networks with transponders 失效具有应答器的双向WDM光通信网络中的保护倒换公开(公告)号：US06307986B1
公开(公告)日：2001-10-23
申请号：US09840043
申请日：2001-04-24
IPC分类号： G02B628
CPC分类号： H04J14/0295 , H04J14/0212 , H04J14/0213 , H04J14/0216 , H04J14/0219 , H04J14/0279 , H04J14/0283 , H04J14/0284 , H04J14/0294 , H04Q2011/0081
摘要： The present invention provides a system for protection switching in a wavelength division multiplexed optical communication network including optical transponders within optical nodes. A work optical transponder receives a first work optical channel dropped by an optical add-drop multiplexer from an optical waveguide while a second work optical transponder adds a work optical channel to the optical add-drop multiplexer. Similarly, a first protect optical transponder is positioned to receive a protect optical channel dropped by the optical add-drop multiplexer while a second protect optical transponder is positioned to add a protect optical channel to the optical add-drop multiplexer. A detection element detects the strength of the optical channel received by the first work optical transponder; control means responsive to the means for detecting the strength of the optical channel received by the first optical transponder, the control means activating the second protect transponder and inactivating the second work transponder when the strength of the optical channel received by the first optical transponder falls below a preset level.
摘要翻译： 本发明提供一种包括光节点内的光转发器的波分复用光通信网络中的保护倒换系统。 工作光学应答器接收由光学分支多路复用器从光波导丢弃的第一工作光信道，而第二工作光学应答器将工作光信道添加到光分插复用器。 类似地，第一保护光学应答器被定位成接收由光分插复用器掉落的保护光信道，而第二保护光转发器被定位成将保护光信道添加到光分插复用器。 检测元件检测由第一工作光学应答器接收的光信道的强度; 响应于用于检测由第一光学应答器接收的光信道的强度的装置的控制装置，当第一光转发器所接收的光信道的强度低于时，控制装置激活第二保护应答器并使第二工作转发器失活 预设级别。
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公开(公告)号：US06411412B1
公开(公告)日：2002-06-25
申请号：US09731760
申请日：2000-12-08
IPC分类号： H04J1402
CPC分类号： H04J14/0293 , H04J14/0216 , H04J14/022 , H04J14/0279 , H04J14/0283 , H04J14/0284 , H04J14/0286
摘要： The present invention relates to an optical network including a bridge for selectively transferring information from an optical channel carried on a first WDM optical waveguide to at least two optical channels on a second WDM optical waveguide. The first and second optical waveguides carry WDM optical signals each having plural optical channels. A bridge is interposed between the first and second optical waveguides which includes an optical add-drop multiplexer optically communicating with each waveguide. At least one optical channel having first and second data bits streams is dropped from the first waveguide. The first and second data bit streams are respectively encoded on two different optical channels which are then added to the second optical waveguide.
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5.发明授权公开(公告)号：US06348985B1
公开(公告)日：2002-02-19
申请号：US09731761
申请日：2000-12-08
IPC分类号： H04J1402
CPC分类号： H04J14/0293 , H04J14/0216 , H04J14/022 , H04J14/0279 , H04J14/0283 , H04J14/0284 , H04J14/0286
摘要： The present invention relates to a bidirectional optical network including a bridge for selectively transferring information from an optical channel carried on a first bidirectional WDM optical waveguide to at least two optical channels on a second bidirectional WDM optical waveguide. The first and second bidirectional optical waveguides each carry two counter-propagating WDM optical signals each having plural channels. A bridge is interposed between the first and second bidirectional optical waveguides which includes an optical add-drop multiplexer optically communicating with each bidirectional waveguide. At least one optical channel having first and second data bits streams is dropped from the first bidirectional waveguide. The first and second data bit streams are respectively encoded on two different optical channels which are then added to the second bidirectional optical waveguide. Advantageously, the two optical channels encoded with the two series of data bits may travel in the same or opposite directions when added to the second bidirectional waveguide, further enhancing network flexibility.
摘要翻译： 双向光网络技术领域本发明涉及一种双向光网络，其包括用于选择性地将信息从第一双向WDM光波导上携带的光信道传送到第二双向WDM光波导上的至少两个光信道的桥。 第一和第二双向光波导都携带两个具有多个通道的反向传播的WDM光信号。 桥接在第一和第二双向光波导之间，其包括与每个双向波导光学通信的光分插复用器。 至少一个具有第一和第二数据比特流的光信道从第一双向波导中丢弃。 第一和第二数据比特流分别编码在两个不同的光通道上，然后将其添加到第二双向光波导。 有利的是，当被添加到第二双向波导时，用两个数据位序列编码的两个光信道可以以相同或相反的方向行进，进一步提高了网络的灵活性。
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6.发明授权Protection switching in bidirectional WDM optical communication networks with transponders 失效具有应答器的双向WDM光通信网络中的保护倒换公开(公告)号：US06438286B1
公开(公告)日：2002-08-20
申请号：US09983071
申请日：2001-10-23
IPC分类号： G02B626
CPC分类号： H04J14/0295 , H04J14/0212 , H04J14/0213 , H04J14/0216 , H04J14/0219 , H04J14/0279 , H04J14/0283 , H04J14/0284 , H04J14/0294 , H04Q2011/0081
摘要： The present invention provides a system for protection switching in a wavelength division multiplexed optical communication network including optical transponders within optical nodes. A work optical transponder receives a first work optical channel dropped by an optical add-drop multiplexer from an optical waveguide while a second work optical transponder adds a work optical channel to the optical add-drop multiplexer. Similarly, a first protect optical transponder is positioned to receive a protect optical channel dropped by the optical add-drop multiplexer while a second protect optical transponder is positioned to add a protect optical channel to the optical add-drop multiplexer. A detection element detects the strength of the optical channel received by the first work optical transponder; control means responsive to the means for detecting the strength of the optical channel received by the first optical transponder, the control means activating the second protect transponder and inactivating the second work transponder when the strength of the optical channel received by the first optical transponder falls below a preset level.
摘要翻译： 本发明提供一种包括光节点内的光转发器的波分复用光通信网络中的保护倒换系统。 工作光学应答器接收由光学分支多路复用器从光波导丢弃的第一工作光信道，而第二工作光学应答器将工作光信道添加到光分插复用器。 类似地，第一保护光学应答器被定位成接收由光分插复用器掉落的保护光信道，而第二保护光转发器被定位成将保护光信道添加到光分插复用器。 检测元件检测由第一工作光转发器接收的光信道的强度;响应于用于检测由第一光转发器接收的光信道的强度的装置的控制装置，控制装置激活第二保护应答器， 第二工作转发器，当第一光学应答器接收的光通道的强度低于预设水平时。
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7.发明授权公开(公告)号：US06321004B1
公开(公告)日：2001-11-20
申请号：US09840042
申请日：2001-04-24
IPC分类号： G02B628
CPC分类号： H04J14/0295 , H04B10/032 , H04J14/0279 , H04J14/0283 , H04J14/0284
摘要： The present invention provides a bidirectional wavelength division multiplexed optical communication network having a protection switching capability within a bidirectional optical waveguide. A bidirectional optical waveguide having plural optical nodes carries counterpropagating wavelength division multiplexed optical communication signals: M optical channels in a first direction and N optical channels in a second direction. The network includes the capacity to generate X+Y protect optical channels which respectively propagate in the first and second directions. Upon detecting loss of an optical signal means are provided for switching the affected M work optical channels to the Y protect optical channels and the affected N work channels to the X protect channels. In this manner, protection switching may be accomplished in a bidirectional optical network on a single bidirectional optical waveguide.
摘要翻译： 本发明提供一种在双向光波导内具有保护切换能力的双向波分复用光通信网络。 具有多个光节点的双向光波导携带反向传播波分复用光通信信号：M个第一方向的光信道和第二方向的N个光信道。 该网络包括产生分别在第一和第二方向传播的X + Y保护光通道的能力。 当检测到光信号丢失时，提供用于将受影响的M工作光信道切换到Y保护光信道和受影响的N个工作信道到X保护信道的装置。 以这种方式，可以在单个双向光波导上的双向光网络中实现保护切换。
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8.发明授权WDM optical communication system with channels supporting multiple data formats 失效WDM光通信系统，支持多种数据格式的信道公开(公告)号：US06288811B1
公开(公告)日：2001-09-11
申请号：US09688804
申请日：2000-10-17
IPC分类号： H04B1000
CPC分类号： H04J14/0213 , H04J14/02 , H04J14/0209 , H04J14/021 , H04J14/0216 , H04J14/0219 , H04J14/0279 , H04J14/0283 , H04J14/0284 , H04J14/0294
摘要： The present invention provides a flexible WDM optical communication system in which each optical channel of the WDM optical communication signal can simultaneously accept multiple data formats. In one embodiment, the WDM optical system includes an optical waveguide having an optical add-drop multiplexer to selectively add and/or drop one or more optical channels to/from the WDM signal carried on the waveguide. A first source of data imparts information onto a first optical channel in a packet format while a second source of data imparts information onto the first optical channel in a time division multiplexed format. Other data sources having other data formats may also be included. An optical network interface electrically communicates with the data sources, placing the data from these sources onto the first optical channel which is generated from an optical source such as a laser. An optical path carries the optical channel from the optical source to the optical add-drop multiplexer. From there, it is multiplexed onto the optical waveguide, merging with the other optical channels of the WDM optical signal.
摘要翻译： 本发明提供了一种灵活的WDM光通信系统，其中WDM光通信信号的每个光信道可以同时接受多种数据格式。 在一个实施例中，WDM光学系统包括具有光分插复用器的光波导，用于向/从波导上承载的WDM信号选择性地添加和/或丢弃一个或多个光信道。 第一数据源以分组格式向第一光信道发送信息，而第二数据源以时分复用格式将信息发送到第一光信道上。 也可以包括具有其他数据格式的其他数据源。 光网络接口与数据源电通信，将来自这些源的数据放置在从诸如激光器的光源产生的第一光通道上。 光路将光信道从光源传送到光分插复用器。 从那里复用到光波导上，与WDM光信号的其他光通道合并。
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