-
公开(公告)号：US10305788B2
公开(公告)日：2019-05-28
申请号：US15199725
申请日：2016-06-30
IPC分类号： H04L12/707 , H04L12/727 , H04L1/00 , H04L29/06 , H04L29/08 , H04L12/721
摘要： The present disclosure generally discloses capabilities for supporting new network zones and associated services. The network zones and associated services may include a near-real-time (NRT) zone and associated NRT services, a real-time (RT) zone and associated RT services, or the like. The resilient network zones and associated resilient and non-resilient services may be configured to provide bounded latency guarantees for reliably supporting various types of applications (e.g., mobile fronthaul, cloud computing, Internet-of-Things (IoT), or the like). The network zones and associated services may be provided using a distance-constrained fiber and wavelength switching fabric design comprised of various network devices and using associated controllers, which may be configured to support service provisioning functions, service testing functions, wavelength switching functions, and so forth.
-
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：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。
-
5.发明申请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：US20050190359A1
公开(公告)日：2005-09-01
申请号：US11065098
申请日：2005-02-25
申请人： James Bacque , Ping Wan , Derrick Remedios , Eddie Ng
发明人： James Bacque , Ping Wan , Derrick Remedios , Eddie Ng
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. The optical fiber carries a plurality of wavelengths, which may or may not be modulated by low frequency dither tones that are utilized for identification purposes and performance monitoring in the optical network. First, the method comprises measuring 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; comparing the measured powers at the local detection points; and determining whether or not a faulty detection point exists along the optical path. If a fault is identified, the method further provides a multi-stage fault detection procedure, which comprises 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. A correlation of the measured total wavelength power losses between the various detection points is used for determining the faulty component location along the optical path. The apparatus, which incorporates the above multi-stage method 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。 光纤承载多个波长，其可以或可以不被用于光网络中的识别目的和性能监视的低频抖动音调制。 首先，该方法包括测量光纤的总功率和总波长功率，作为多个局部检测点处各个波长的功率之和; 比较局部检测点的测量功率; 以及确定沿光路是否存在故障检测点。 如果识别故障，则该方法进一步提供多级故障检测程序，其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。 使用各个检测点之间测量的总波长功率损耗的相关性来确定沿光路的故障分量位置。 还提供了包括用于确定光网络中的故障部件位置的上述多级方法的装置。
-
公开(公告)号：US06732058B2
公开(公告)日：2004-05-04
申请号：US10134382
申请日：2002-04-30
申请人： Dongxing Jin , Ping Wan , Derrick Remedios , Leonard Marziliano
发明人： Dongxing Jin , Ping Wan , Derrick Remedios , Leonard Marziliano
IPC分类号： G06F1900
CPC分类号： G06F17/142 , G06F17/141 , G06F17/147
摘要： Various methods and apparatuses are provided for performing a radix-M FFT (Fast Fourier Transform) upon N time domain samples to produce N/S frequency domain samples for detecting tones of dithers impressed on channels of a WDM (wavelength Division Multiplexed) optical signal. Successive tones have a tone frequency spacing, &Dgr;fta, and a sampling frequency, fs, is chosen so that fs=N&Dgr;fta/S. S is a spacing given by S=Mw with w being an integer. The radix-M FFT is performed in k=logm(N) stages and within the stages a reduced number of radix-M computations, when compared to the number of radix-M computations of a conventional radix-M FFT, are performed on data points associated with the N time domain samples. This is possible because successive frequency domain samples of the N/S frequency domain samples differ by &Dgr;fta=S&Dgr;f where &Dgr;f is a frequency bandwidth.
摘要翻译： 提供了各种方法和装置，用于在N个时域样本上执行基数M FFT（快速傅立叶变换），以产生N / S频域样本，用于检测印在WDM（波分复用）光信号的信道上的抖动的音调。 连续色调具有音频间隔Deltafta，并且选择采样频率fs，使得fs = NDeltafta / S。 S是由S = M
给出的间隔，其中w是整数。 在k = logm（N）个阶段中执行基数M FFT，并且在与数据的基数-M计算的数量相比较时，减少数量的基数M计算的阶段执行数据 与N个时域样本相关联的点。 这是可能的，因为N / S频域样本的连续频域样本随Deltafta = SDeltaf而不同，其中Deltaf是频带宽度。 -
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。
-
公开(公告)号：US20060291870A1
公开(公告)日：2006-12-28
申请号：US11511248
申请日：2006-08-29
申请人： Ping Wan , Derrick Remedios , Patrick Chimfwembe
发明人： Ping Wan , Derrick Remedios , Patrick Chimfwembe
IPC分类号： H04B10/04
CPC分类号： H04B10/505 , H04B10/50572 , H04J14/0227 , H04J14/0241 , H04J14/0278 , H04J14/0298
摘要： Signals in an optical communications network, such as optical channels in an optical WDM network for example, are each identified by at least two low frequency dither tones with which the signal is modulated. The dither tones alternate with a predetermined periodicity to produce a cyclically repeated sequence of dither tones. A network parameter, such as a channel identifier for example, is obtained by the detection of the particular combination of dither tones in the sequence. To detect a number of network parameters a signal is modulated with a number of cyclically repeated sequences of dither tones each uniquely identifying a respective network parameter. In some implementations each dither tone in a cyclically repeated sequence of dither tones is repeated with substantially the same phase and coherent averaging is performed over a number of periods to detect dither tones on low power signals.
-
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。
-
10.发明授权Method and apparatus for gain excursion minimization in automatic gain controlled optical systems 有权自动增益控制光学系统中增益偏移最小化的方法和装置公开(公告)号：US06903867B2
公开(公告)日：2005-06-07
申请号：US10195495
申请日：2002-07-16
CPC分类号： H04B10/2942 , H04B10/2935
摘要： An apparatus and method for minimizing channel gain excursion in an optical system with automatic gain control is provided. The apparatus includes a feedback control loop which dynamically regulates the target gain of an automatic gain controlled (AGC) amplifier so as to compensate for the action of the AGC amplifier to maintain a constant linear average gain without accounting for the distribution of channels that carry signals across the amplifier spectral gain profile, which causes gain excursion of individual channels. The feedback control loop measures gain of individual channels and uses these measurements to regulate the target gain of the amplifier so as to minimize gain excursion of individual channels. If required, the apparatus may be integrated into a package. In one embodiment, the method for regulating the target gain is to maintain constant gain for all channels irrespective of the number of channels that carry a signal. This method is simple and guarantees no gain excursion. In another embodiment, a weight is assigned to an individual channel to calculate a weighted average for the target gain of the amplifier while attempting to minimize gain excursion of individual channels.
摘要翻译： 提供一种用于使具有自动增益控制的光学系统中的通道增益偏移最小化的装置和方法。 该装置包括反馈控制回路，其动态地调节自动增益控制（AGC）放大器的目标增益，以便补偿AGC放大器的动作以维持恒定的线性平均增益，而不考虑携带信号的信道的分布 在放大器频谱增益曲线上，这导致单个通道的增益偏移。 反馈控制环路测量单个通道的增益，并使用这些测量来调节放大器的目标增益，以便最小化各个通道的增益偏移。 如果需要，该装置可以集成到包装中。 在一个实施例中，用于调节目标增益的方法是保持所有通道的恒定增益，而不管携带信号的通道数量如何。 这种方法很简单，保证没有增益偏移。 在另一个实施例中，将权重分配给单个信道以计算放大器的目标增益的加权平均值，同时尝试最小化各个信道的增益偏移。
-
-
-
-
-
-
-
-
-
搜索结果
36 条记录 (耗时 0.02 秒)