-
公开(公告)号：US07783193B2
公开(公告)日：2010-08-24
申请号：US11754341
申请日：2007-05-28
IPC分类号： H04B10/08
CPC分类号： H04J14/0298 , H04B10/07 , H04B2210/075 , H04J14/0227 , H04J14/0241 , H04J14/028
摘要： Identification of optical channels in wavelength division multiplex (WDM) optical networks may be confounded by unwanted noise tones interfering with pilot/dither tones used for identifying optical channels. The invention describes a method of selecting pilot/dither tones that are selectively restricted to avoid allocating dither/pilot tone frequencies that appear as noise tones along the path of an optical channel in the optical network.
摘要翻译： 在波分多路复用（WDM）光网络中的光信道的识别可能会受到干扰用于识别光信道的导频/抖动音调的不利噪声音调的混淆。 本发明描述了一种选择限制的导频/抖动音调的方法，以避免分配出沿着光网络中的光信道路径出现的噪声音调的抖动/导频音频率。
-
公开(公告)号：US20070280700A1
公开(公告)日：2007-12-06
申请号：US11754341
申请日：2007-05-28
IPC分类号： H04B10/04
CPC分类号： H04J14/0298 , H04B10/07 , H04B2210/075 , H04J14/0227 , H04J14/0241 , H04J14/028
摘要： Identification of optical channels in wavelength division multiplex (WDM) optical networks may be confounded by unwanted noise tones interfering with pilot/dither tones used for identifying optical channels. The invention describes a method of selecting pilot/dither tones that are selectively restricted to avoid allocating dither/pilot tone frequencies that appear as noise tones along the path of an optical channel in the optical network.
摘要翻译： 在波分多路复用（WDM）光网络中的光信道的识别可能会受到干扰用于识别光信道的导频/抖动音调的不利噪声音调的混淆。 本发明描述了一种选择限制的导频/抖动音调的方法，以避免分配出沿着光网络中的光信道路径出现的噪声音调的抖动/导频音频率。
-
3.发明授权Method for network commissioning and upgrading using amplified spontaneous emission (ASE) sources 有权使用放大自发辐射（ASE）来源进行网络调试和升级的方法公开(公告)号：US07652816B2
公开(公告)日：2010-01-26
申请号：US11615953
申请日：2006-12-23
申请人： Jason Christopher De Rocher , Hamish Iain MacDonald , Walter Joseph Carpini , Eddie Kai Ho Ng , Derrick Remedios , James Benson Bacque , Ping Wai Wan
发明人： Jason Christopher De Rocher , Hamish Iain MacDonald , Walter Joseph Carpini , Eddie Kai Ho Ng , Derrick Remedios , James Benson Bacque , Ping Wai Wan
CPC分类号： H04B10/275
摘要： This invention provides a method for commissioning and upgrading an optical ring network using its internal amplifiers as Automatic Spontaneous Emission sources of light that are used in making measurements. A modular segmented approach is adopted and the network is commissioned segment by segment. A flexible method is used for upgrading a commissioned network by adding or deleting a node or changing the internal configuration of a node. The method uses techniques for the correction of the Optical Signal to Noise Ratio induced error as well as the Spectral Filtering Error during the loss computation required for adjusting the gains of the amplifiers at each network node to an appropriate value. Since the method does not require an external laser source that needs to be moved manually from node to node it greatly reduces the commissioning time. Since it uses only the components of the network itself and does not deploy any additional device it also leads to a significant saving in cost.
摘要翻译： 本发明提供了一种使用其内部放大器调试和升级光环网络的方法，所述放大器是用于进行测量的自动自发发射光源。 采用模块化分段方式，逐段调试网络。 灵活的方法用于通过添加或删除节点或更改节点的内部配置来升级委托网络。 该方法使用用于校正光信噪比诱导误差的技术以及在将每个网络节点处的放大器的增益调整到适当值所需的损耗计算期间的光谱滤波误差。 由于该方法不需要需要从节点手动移动的外部激光源，因此大大减少了调试时间。 由于它仅使用网络组件本身，并且不部署任何其他设备，因此也可大大节省成本。
-
4.发明授权Methods and apparatus for detecting a faulty component location along an optical path in an optical network 有权用于检测沿着光网络中的光路的故障部件位置的方法和装置公开(公告)号：US07139069B2
公开(公告)日：2006-11-21
申请号：US11065098
申请日：2005-02-25
IPC分类号： G01N21/00
CPC分类号： H04B10/077 , H04B10/07955
摘要： A multi-stage method and apparatus for determining a faulty component location along an optical path through an optical fiber in an optical network are disclosed. A total power of the optical fiber, and a total wavelength power as a sum of powers of the individual wavelengths at a plurality of local detection points are measured and compared at the local detection points, followed by determining whether or not a faulty detection point exists along the optical path. If a fault is identified, the method provides a multi-stage fault detection procedure, including measuring a total wavelength power loss between a local detection point and an adjacent detection point, between the local detection point and multiple non-adjacent detection points, and a correlation of the measured total wavelength power losses between the various detection points. A corresponding apparatus for determining the faulty component location in the optical network is also provided.
摘要翻译： 公开了一种用于通过光网络中的光纤确定沿着光路的故障部件位置的多级方法和装置。 在本地检测点测量光纤的总功率和总波长功率作为多个本地检测点处的各个波长的功率之和，然后确定是否存在故障检测点 沿光路。 如果识别故障，则该方法提供多级故障检测程序，包括测量本地检测点与相邻检测点之间，本地检测点与多个非相邻检测点之间的总波长功率损耗，以及 在各种检测点之间测量的总波长功率损耗的相关性。 还提供了用于确定光网络中的故障组件位置的相应设备。
-
5.发明授权公开(公告)号：US08014668B2
公开(公告)日：2011-09-06
申请号：US12017041
申请日：2008-01-20
申请人： Ping Wai Wan , Derrick Remedios , Patrick Chilufya Chimfwembe , Colin Geoffrey Kelly , James Benson Bacque
发明人： Ping Wai Wan , Derrick Remedios , Patrick Chilufya Chimfwembe , Colin Geoffrey Kelly , James Benson Bacque
CPC分类号： H04B10/0775 , H04B2210/075 , H04B2210/078
摘要： A method and apparatus for distributed measurement of chromatic dispersion in an optical network is disclosed. The network comprises optical switching nodes interconnected by optical links. An optical link may comprise multiple spans, each span ending in a transport module which comprises signal-processing components. At least one optical switching node has a probing signal generator transmitting an optical probing signal along a selected path in the network. Probing-signal detectors placed at selected transport modules determine chromatic-dispersion values and send results to a processing unit which determines appropriate placement of compensators or appropriate adjustments of compensators placed along the path. A preferred probing signal has the form of wavelength modulated optical carrier which is further intensity modulated by a periodic, preferably sinusoidal, probing tone. Variation in the phase-shift of the probing tone corresponding to variation of the wavelength of the optical probing signal determines chromatic-dispersion characteristics for different spans of the path.
摘要翻译： 公开了一种用于分布式测量光网络色散的方法和装置。 网络包括通过光链路互连的光交换节点。 光链路可以包括多个跨度，每个跨度结束于传输模块，其包括信号处理组件。 至少一个光交换节点具有探测信号发生器，沿着网络中的选定路径发射光探测信号。 放置在所选传输模块处的探测信号检测器确定色散值并将结果发送到处理单元，该处理单元确定补偿器的适当位置或沿路径放置的补偿器的适当调整。 优选的探测信号具有波长调制光载波的形式，其进一步通过周期性的，优选正弦的探测色调进行强度调制。 与光探测信号的波长变化相对应的探测音的相移的变化确定了路径不同跨度的色散特性。
-
6.发明授权Method for network commissioning using amplified spontaneous emission (ASE) sources 失效使用放大自发辐射（ASE）来源进行网络调试的方法公开(公告)号：US07321727B2
公开(公告)日：2008-01-22
申请号：US11178330
申请日：2005-07-12
申请人： Eddie Kai Ho Ng , Jason Christopher De Rocher , Derrick Remedios , James Benson Bacque , Ping Wai Wan
发明人： Eddie Kai Ho Ng , Jason Christopher De Rocher , Derrick Remedios , James Benson Bacque , Ping Wai Wan
CPC分类号： H04B10/075 , H04B10/0775 , H04J14/0227 , H04J14/0241 , H04J14/0283
摘要： This invention provides a method for commissioning an optical network using internal Automatic Spontaneous Emission (ASE) light inherently present in the optical network as a light source (the ASE light source) for measuring losses inside and between nodes in the network. A modular segmented approach is adopted and the network is commissioned segment by segment. The method uses techniques for the correction of the Optical Signal to Noise Ratio induced error as well as the Spectral Filtering Error during the loss computation required for adjusting the gains of the amplifiers at each network node to an appropriate value. Since the method does not require an external laser source that needs to be moved manually from node to node, it greatly reduces the commissioning time. Since it uses only the existing components of the network nodes it also leads to a significant saving in cost.
摘要翻译： 本发明提供一种使用光网络中固有存在的内部自发自发发射（ASE）光作为用于测量网络内部和节点之间的损耗的光源（ASE光源）来调试光网络的方法。 采用模块化分段方式，逐段调试网络。 该方法使用用于校正光信噪比诱导误差的技术以及在将每个网络节点处的放大器的增益调整到适当值所需的损耗计算期间的光谱滤波误差。 由于该方法不需要需要从节点手动移动的外部激光源，因此大大减少了调试时间。 由于它仅使用网络节点的现有组件，因此也可大大节省成本。
-
7.发明授权Method and system for compensating for side effects of cross gain modulation in amplified optical networks 有权用于补偿放大光网络中交叉增益调制的副作用的方法和系统公开(公告)号：US07127165B2
公开(公告)日：2006-10-24
申请号：US10628418
申请日：2003-07-29
申请人： Paul David Obeda , Robert Michael Bierman , James Benson Bacque , Colin Geoffrey Kelly , Derrick Remedios , Ping Wai Wan
发明人： Paul David Obeda , Robert Michael Bierman , James Benson Bacque , Colin Geoffrey Kelly , Derrick Remedios , Ping Wai Wan
IPC分类号： H04B10/08
CPC分类号： H04B10/079 , H04B10/07955 , H04B2210/075
摘要： A method and system for compensating for side effects of cross gain modulation in amplified optical networks, which allows reliable identification of expected and unexpected channels in the network is provided. Each optical channel traveling in the optical network is marked with a unique channel signature (expected channel signature), having one or more dither tone modulated onto the optical channel; followed by detecting a spectrum of tones, including said modulated dither tones and ghost tones thereof produced by the cross gain modulation in the optical network, at various locations in the optical network. Amplitudes of the spectrum tones, which belong to the expected channel signature, are compared with a first threshold, while amplitudes of the remaining spectrum tones, which are not the valid tones, are compared with a second threshold, which is lower than the first threshold. The spectrum tones are identified as valid tones if their amplitudes are above the first threshold; and an alarm signaling that the expected channel signature is missing is generated if the amplitude of the spectrum tone is below the first threshold. Yet another alarm is generated signaling that an unexpected channel is detected in the network if the amplitude of at least one of the remaining spectrum tones is exceeding the second threshold. Alternatively, the other alarm is generated if amplitudes of the remaining spectrum tones belonging to one of the allowable channel signatures in the network are above the second threshold. A corresponding system incorporating the step of the methods described above is also provided.
摘要翻译： 提供了一种用于补偿放大光网络中交叉增益调制的副作用的方法和系统，其允许可靠地识别网络中的预期和意外信道。 在光网络中行进的每个光信道被标记为具有调制到光信道上的一个或多个抖动音调的唯一信道签名（预期信道签名）; 随后在光网络中的各个位置处检测包括由光网络中的交叉增益调制产生的所述调制抖动音和其重音的音调。 将属于预期信道签名的频谱音调的幅度与第一阈值进行比较，而不是有效音调的剩余频谱音调的幅度与低于第一阈值的第二阈值进行比较 。 如果它们的幅度高于第一阈值，则频谱色调被识别为有效音调; 并且如果频谱色调的幅度低于第一阈值，则产生警告，指示预期信道签名丢失。 如果剩余频谱色调中的至少一个的幅度超过第二阈值，则产生另一报警，指示在网络中检测到意外信道。 或者，如果属于网络中的一个可允许频道签名的剩余频谱的幅度高于第二阈值，则产生另一警报。 还提供了包括上述方法的步骤的相应系统。
-
公开(公告)号：US20070280687A1
公开(公告)日：2007-12-06
申请号：US11754675
申请日：2007-05-29
申请人： Ping Wai Wan , Derrick Remedios
发明人： Ping Wai Wan , Derrick Remedios
IPC分类号： H04B10/20
CPC分类号： H04B10/85 , H04B10/0775 , H04B10/07955
摘要： Methods and apparatus for optical-power control in an optical network employing wavelength-division multiplexed (WDM) optical-fiber links are devised to circumvent the effect of crosstalk caused by optical-power scattering. Each carrier signal is amplitude-modulated by an identifying tone, with the power of an identifying tone having a predetermined ratio to the power of its carrier signal. A fiber span within an optical-fiber link is tapped at a preferred monitoring point, and the power spectrum of the envelope of the tapped optical signal is measured. To estimate an individual carrier power, a temporary gain is applied and the power of a corresponding tone is measured. To control optical power of each wavelength carrier in several spans in the network, a network controller selects an order of processing the spans of interest, and selects the order of processing of each channel within each span.
摘要翻译： 设计了采用波分复用（WDM）光纤链路的光网络中的光功率控制方法和装置，以避免由光功率散射引起的串扰的影响。 每个载波信号由标识音进行幅度调制，其中识别音的功率与其载波信号的功率具有预定的比例。 光纤链路中的光纤跨段在优选的监控点被点击，并且测量了抽头光信号的包络的功率谱。 为了估计单个载波功率，施加临时增益并测量相应音调的功率。 为了控制网络中多个跨度的每个波长载波的光功率，网络控制器选择处理感兴趣的跨度的顺序，并选择每个跨度内每个信道的处理顺序。
-
公开(公告)号：US07248798B2
公开(公告)日：2007-07-24
申请号：US10259290
申请日：2002-09-30
CPC分类号： H04J14/0227 , H04B10/00 , H04B2210/071 , H04B2210/074 , H04B2210/075 , H04B2210/077 , H04B2210/078 , H04J14/0258 , H04J14/0267 , H04J14/0276 , H04J14/0278 , H04J14/0298
摘要： A method and system for identification of a channel in an optical network is provided. The channel is identified by the use of unique combinations of two or more low frequencies, or tones, modulated onto the channel and optionally, a network parameter associated with the channel.
摘要翻译： 提供了一种用于识别光网络中的信道的方法和系统。 信道通过使用调制到信道上的两个或多个低频或音调的独特组合来识别，并且可选地使用与该信道相关联的网络参数。
-
公开(公告)号：US07142783B2
公开(公告)日：2006-11-28
申请号：US10452511
申请日：2003-06-03
IPC分类号： H04B10/08
CPC分类号： H04J14/0227 , H04B10/00 , H04B2210/071 , H04B2210/074 , H04B2210/075 , H04B2210/077 , H04B2210/078 , H04J14/0258 , H04J14/0267 , H04J14/0276 , H04J14/0278 , H04J14/0298
摘要： A method and system for identification of a channel in an optical network is provided. The channel is identified by the use of unique combinations of two or more low frequencies, or tones, modulated onto the channel and optionally, a network parameter associated with the channel.
摘要翻译： 提供了一种用于识别光网络中的信道的方法和系统。 信道通过使用调制到信道上的两个或多个低频或音调的独特组合来识别，并且可选地使用与该信道相关联的网络参数。
-
-
-
-
-
-
-
-
-
搜索结果
28 条记录 (耗时 0.023 秒)