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

IPC分类号： G01M11/00 ,  G01N21/00 ,  H04B10/08

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：US20060023737A1

公开(公告)日：2006-02-02

申请号：US11178330

申请日：2005-07-12

申请人： Eddie Ng ,  Jason De Rocher ,  Derrick Remedios ,  James Bacque ,  Ping Wan

发明人： Eddie Ng ,  Jason De Rocher ,  Derrick Remedios ,  James Bacque ,  Ping Wan

IPC分类号： H04L12/43

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。