公开(公告)号：EP1109341A3

公开(公告)日：2005-09-28

申请号：EP00310736.4

申请日：2000-12-04

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Nielsen, Torben N. ,  Spector, Magaly ,  Thompson, William A.

IPC: H04J14/02 ,  G02B6/34

CPC classification number: H04J14/0201

Abstract: An optical wavelength add/drop multiplexer (WADM) is configured to add or drop two or more signals each associated with one of a plurality of channels in a wavelength division multiplexed (WDM) signal. The WADM comprises an optical circulator that is optically coupled at one port to two or more serially interconnected fiber Bragg gratings (FBGs), and is optically coupled at another port to a thin film filter including two or more serially interconnected thin film filter elements. Each of the two or more FBGs is matched with a thin film filter element, both arranged to be responsive to signals associated with one of the plurality of channels. Bandwidth and dispersion properties for the FBGs are selected to permit operation of the WADM at two distinct signal data rates. To equalize associated insertion losses in embodiments of the invention arranged to add or drop two or more signals, the FBGs are matched to the thin film filter elements in inverse order with respect to their optical distance from the optical circulator.

公开(公告)号：EP1608098A1

公开(公告)日：2005-12-21

申请号：EP05253432.8

申请日：2005-06-03

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Fishman, Daniel A. ,  Xiang, Liu ,  Silverio, Vincent, John ,  Thompson, William A. ,  Ying, Jinpin

IPC: H04J14/02

CPC classification number: H04J14/0204 ,  H04J14/0205 ,  H04J14/0208 ,  H04J14/0213 ,  H04J14/0219

Abstract: An optical add/drop multiplexer (OADM) adapted to route optical signals having at least two different bit rates. The OADM has at least two sets of DWDM channels with channels in a first set having a first bandwidth value, e.g., suitable for the transmission of signals having a bit rate of 10 Gb/s, and channels in a second set having a second bandwidth value, e.g., suitable for the transmission of signals having a bit rate of 40 Gb/s. In one embodiment, the frequencies of the channels from the first set are interleaved with the frequencies of the channels from the second set, and the OADM has first and second optical branches adapted to process optical signals corresponding to the first and second sets, respectively. Initially, the OADM may be configured to process 10-Gb/s signals using the first optical branch only while leaving the second optical branch unutilized. During an upgrade, which adds a 40-Gb/s service to the system, the OADM may be configured to process 40-Gb/s signals using the second optical branch. Advantageously, the upgrade can be performed without or with minimum interruptions to the 10-Gb/s service already in place.

Abstract translation: 适于路由具有至少两个不同比特率的光信号的光分插复用器（OADM）。 OADM具有至少两组DWDM信道，第一组中的信道具有第一带宽值，例如，适合于具有10Gb / s比特率的信号的传输，以及具有第二带宽的第二组中的信道 值，例如，适合于传输具有40Gb / s比特率的信号。 在一个实施例中，来自第一组的信道的频率与来自第二组的信道的频率交织，并且OADM具有分别适于处理对应于第一和第二组的光信号的第一和第二光分支。 最初，OADM可以被配置为仅在不使用第二光学分支的情况下使用第一光学分支来处理10-Gb / s信号。 在升级过程中，为系统增加了40 Gb / s的服务，OADM可以配置为使用第二个光分支处理40 Gb / s信号。 有利的是，升级可以在没有或者对已经存在的10Gb / s服务的最小中断的情况下执行。

公开(公告)号：EP1460784A1

公开(公告)日：2004-09-22

申请号：EP04014298.6

申请日：2000-12-12

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Bode, Dirk ,  Hyun, Victor S. ,  Israel, John G. ,  Lingner, Gerard T. ,  McKay, Bradley A. ,  Nadhumi, Prasanna R. ,  Thompson, William A.

IPC: H04B10/17

CPC classification number: H04B10/2935

Abstract: Each of a series of optical amplifiers is arranged such that, in response to detecting particular stimuli occurring at an input or receipt of an adjustment start message from an upstream amplifier, adjusts certain amplifier parameters using small steps and completes the adjustment using large steps if it does not receive the adjustment start message within a predetermined period of time of starting the adjustment in response to detecting the stimuli. If the optical amplifier receives the adjustment start message, then it continues to perform the adjustment and completes the adjustment using large steps when it receives an adjustment done message from the upstream optical amplifier. At that point, the optical amplifier sends an adjustment done message to the next downstream amplifier if it is not the tail-end amplifier.

Abstract translation: 一系列光放大器中的每一个被布置成使得响应于检测在输入处发生的特定刺激或接收来自上游放大器的调整开始消息，使用小步骤来调整某些放大器参数，并且如果使用大步骤则完成调整 在响应于检测到刺激而在开始调整的预定时间段内没有接收到调整开始消息。 如果光放大器接收到调整开始消息，则当从上游光放大器接收到调整完成消息时，它继续执行调整并且使用大步骤完成调整。 此时，光放大器如果不是尾端放大器，则向下一个下游放大器发送调整完成消息。

公开(公告)号：EP1113597A2

公开(公告)日：2001-07-04

申请号：EP00311057.4

申请日：2000-12-12

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Bode, Dirk ,  Hyun, Victor S. ,  Israel, John G. ,  Lingner, Gerard T. ,  McKay, Bradley ,  Nadhumi, Prasanna R. ,  Thompson, William A.

IPC: H04B10/17

CPC classification number: H04B10/2935

Abstract: Each of a series of optical amplifiers is arranged such that, in response to detecting particular stimuli occurring at an input or receipt of an adjustment start message from an upstream amplifier, adjusts certain amplifier parameters using small steps and completes the adjustment using large steps if it does not receive the adjustment start message within a predetermined period of time of starting the adjustment in response to detecting the stimuli. If the optical amplifier receives the adjustment start message, then it continues to perform the adjustment and completes the adjustment using large steps when it receives an adjustment done message from the upstream optical amplifier. At that point, the optical amplifier sends an adjustment done message to the next downstream amplifier if it is not the tail-end amplifier.

Abstract translation: 一系列光放大器中的每一个被布置成使得响应于检测在输入处发生的特定刺激或接收来自上游放大器的调整开始消息，使用小步骤来调整某些放大器参数，并且如果使用大步骤则完成调整 在响应于检测到刺激而在开始调整的预定时间段内没有接收到调整开始消息。 如果光放大器接收到调整开始消息，则当从上游光放大器接收到调整完成消息时，它继续执行调整并且使用大步骤完成调整。 此时，光放大器如果不是尾端放大器，则向下一个下游放大器发送调整完成消息。

公开(公告)号：EP1460784B1

公开(公告)日：2005-10-05

申请号：EP04014298.6

申请日：2000-12-12

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Bode, Dirk ,  Hyun, Victor S. ,  Israel, John G. ,  Lingner, Gerard T. ,  McKay, Bradley A. ,  Nadhumi, Prasanna R. ,  Thompson, William A.

IPC: H04B10/17

CPC classification number: H04B10/2935

公开(公告)号：EP1168686A1

公开(公告)日：2002-01-02

申请号：EP01300296.9

申请日：2001-01-15

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Thompson, William A.

IPC: H04B10/24

CPC classification number: H04B10/2503

Abstract: A bi-directional optical transmission system according to the present invention provides transport of x optical channels over n nodes. The system supports two-way transport of the x channels over a single fiber connecting each of the nodes in sequence. The system is advantageous in that only two optical transmission bands are utilized in order to achieve minimal loss in the separation of bands. The two directions of optical transmission on the fiber between the end nodes have a spectral (wavelength/frequency) separation, in addition to directional separation. The use of only two bands permits the utilization of low-loss wide band thin film optical filters to combine and separate the signals at each node. Further processing of the signals takes place in unidirectional components, e.g., multiplexers, demultiplexers and amplifiers, as required. An alternating arrangement of the optical filters in the two separate bands is chosen to maximize the optical performance of the overall system and significantly reduce insertion losses. In one exemplary embodiment of the present invention, at each intermediate node in the system a transmission filter for the first band of optical signals is used between the output of an optical amplifier for the first band and the bi-directional fibers. A reflection port of this filter is used to carry oppositely directed signals of the second band from the bidirectional fiber to an optical amplifier for the second band. An optical transmission filter for the second optical band is also used at each intermediate node between the output of an optical amplifier for the second band and the bi-directional fiber. The reflection port of the second band filter is used to carry the input signal of the first band from the bi-directional fibers to the optical amplifier for the first band. End nodes in the system include only an appropriate one of the transmission filters. The alternate arrangement of filters simultaneously provides for optimal signal performance for both directions of transmission at every node in the system while at the same time minimizing insertion losses from filtering components.

Abstract translation: 根据本发明的双向光传输系统提供x个光信道在n个节点上的传输。 该系统支持通过单根光纤按顺序连接每个节点的x通道的双向传输。 该系统的优点在于仅使用两个光学传输频带以实现频带分离中的最小损失。 除了定向分离之外，端节点之间光纤上的光传输的两个方向具有光谱（波长/频率）分离。 仅使用两个频带允许利用低损耗宽带薄膜光学滤波器来组合和分离每个节点处的信号。 根据需要，信号的进一步处理发生在单向部件中，例如复用器，解复用器和放大器。 选择两个分离带中的光学滤波器的交替布置以最大化整个系统的光学性能并显着降低插入损耗。 在本发明的一个示例性实施例中，在系统中的每个中间节点处，用于第一频带的光信号的传输滤波器被用于第一频带的光放大器的输出与双向光纤之间。 该滤波器的反射端口用于将来自双向光纤的第二频带的相反指向的信号传送至第二频带的光学放大器。 用于第二光带的光学透射滤波器也用于第二频带的光学放大器的输出和双向光纤之间的每个中间节点。 第二带通滤波器的反射端口用于将来自双向光纤的第一频带的输入信号传送到第一频带的光放大器。 系统中的末端节点只包含一个适当的传输过滤器。 滤波器的交替布置同时为系统中每个节点的两个传输方向提供最佳的信号性能，同时使滤波元件的插入损耗最小化。

公开(公告)号：EP1109341A2

公开(公告)日：2001-06-20

申请号：EP00310736.4

申请日：2000-12-04

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Nielsen, Torben N. ,  Spector, Magaly ,  Thompson, William A.

IPC: H04J14/02

CPC classification number: H04J14/0201

Abstract: An optical wavelength add/drop multiplexer (WADM) is configured to add or drop two or more signals each associated with one of a plurality of channels in a wavelength division multiplexed (WDM) signal. The WADM comprises an optical circulator that is optically coupled at one port to two or more serially interconnected fiber Bragg gratings (FBGs), and is optically coupled at another port to a thin film filter including two or more serially interconnected thin film filter elements. Each of the two or more FBGs is matched with a thin film filter element, both arranged to be responsive to signals associated with one of the plurality of channels. Bandwidth and dispersion properties for the FBGs are selected to permit operation of the WADM at two distinct signal data rates. To equalize associated insertion losses in embodiments of the invention arranged to add or drop two or more signals, the FBGs are matched to the thin film filter elements in inverse order with respect to their optical distance from the optical circulator.

Abstract translation: 光波长分插多路复用器（WADM）被配置为在波分复用（WDM）信号中加入或分出与多个信道之一相关联的两个或更多个信号。 WADM包括在一个端口光学耦合到两个或更多个串联的光纤布拉格光栅（FBG）的光环行器，并且在另一个端口光耦合到包括两个或更多个串联的薄膜滤波器元件的薄膜滤波器。 两个或更多个FBG中的每一个与薄膜滤波器元件匹配，两个布置成响应于与多个通道中的一个通道相关联的信号。 选择FBG的带宽和色散特性以允许以两种不同的信号数据速率操作WADM。 为了平衡本发明的实施例中相关联的插入损耗，其布置成添加或丢弃两个或更多个信号，FBG相对于其与光循环器的光学距离相反的顺序与薄膜滤波器元件匹配。

公开(公告)号：EP1608097A3

公开(公告)日：2006-03-22

申请号：EP05253423.7

申请日：2005-06-03

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Fishman, Daniel A. ,  Liu, Xiang ,  Silverio, Vincent John ,  Thompson, William A. ,  Ying, Jinpin

IPC: H04J14/02

CPC classification number: H04J14/0221 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0208 ,  H04J14/0213 ,  H04J14/0219

Abstract: An optical add/drop multiplexer (OADM) adapted to route optical signals having at least two different bit rates. The OADM has at least two sets of DWDM channels, e.g., with channels in a first set having a first bandwidth value suitable for the transmission of 10-Gb/s signals and channels in a second set having a second bandwidth value suitable for the transmission of 40-Gb/s signals. The first and second sets occupy two different spectral bands and the first set has two subsets of interleaved channels. In one embodiment, the OADM has first and second optical branches adapted to process optical signals corresponding to first and second groups of channels, respectively. The first group includes a first subset from the first set while the second group includes the second set and a second subset from the first set. Advantageously, OADMs of the invention may be used to create independent processing paths for different groups of channels. As a result, a communication system having those OADMs can be upgraded, e.g., to add a new 40-Gb/s service and/or to populate additional 10-Gb/s channels substantially without interrupting the 10-Gb/s service already in place.

公开(公告)号：EP1608097A2

公开(公告)日：2005-12-21

申请号：EP05253423.7

申请日：2005-06-03

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Fishman, Daniel A. ,  Liu, Xiang ,  Silverio, Vincent John ,  Thompson, William A. ,  Ying, Jinpin

IPC: H04J14/02 ,  G02B6/34

CPC classification number: H04J14/0221 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0208 ,  H04J14/0213 ,  H04J14/0219

Abstract: An optical add/drop multiplexer (OADM) adapted to route optical signals having at least two different bit rates. The OADM has at least two sets of DWDM channels, e.g., with channels in a first set having a first bandwidth value suitable for the transmission of 10-Gb/s signals and channels in a second set having a second bandwidth value suitable for the transmission of 40-Gb/s signals. The first and second sets occupy two different spectral bands and the first set has two subsets of interleaved channels. In one embodiment, the OADM has first and second optical branches adapted to process optical signals corresponding to first and second groups of channels, respectively. The first group includes a first subset from the first set while the second group includes the second set and a second subset from the first set. Advantageously, OADMs of the invention may be used to create independent processing paths for different groups of channels. As a result, a communication system having those OADMs can be upgraded, e.g., to add a new 40-Gb/s service and/or to populate additional 10-Gb/s channels substantially without interrupting the 10-Gb/s service already in place.

Abstract translation: 适于路由具有至少两个不同比特率的光信号的光分插复用器（OADM）。 OADM具有至少两组DWDM信道，例如，具有适合于传输10Gb / s信号的第一带宽值的信道和具有适合于传输的第二带宽值的第二集合中的信道的至少两组DWDM信道 的40 Gb / s信号。 第一组和第二组占用两个不同的频谱带，第一组具有两个交织信道子集。 在一个实施例中，OADM具有分别适于处理对应于第一和第二组信道的光信号的第一和第二光分支。 第一组包括来自第一组的第一子集，而第二组包括第二组，而第二组包括第一组。 有利地，本发明的OADM可以用于为不同的信道组创建独立的处理路径。 因此，可以升级具有这些OADM的通信系统，例如，为了增加新的40Gb / s服务和/或基本上添加10Gb / s信道，而不会中断10Gb / s的服务 地点。

公开(公告)号：EP1113597B1

公开(公告)日：2005-04-20

申请号：EP00311057.4

申请日：2000-12-12

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Bode, Dirk ,  Hyun, Victor S. ,  Israel, John G. ,  Lingner, Gerard T. ,  McKay, Bradley A. ,  Nadhumi, Prasanna R. ,  Thompson, William A.

IPC: H04B10/17

CPC classification number: H04B10/2935