首页>
外国专利>
Place Independent application of a correlation-based OTDR technique in a branched optical fiber network in operation.
Place Independent application of a correlation-based OTDR technique in a branched optical fiber network in operation.
展开▼
机译:基于相关性的OTDR技术在运行中的分支光纤网络中的位置独立应用。
展开▼
页面导航
摘要
著录项
相似文献
摘要
In a branched optical fibre network in which an optical signal (I) modulated with a data signal is distributed by a transmitter connected to the network, OTDR based on correlation is applied independently of position by uncoupling both a signal part (I1) of the distributed signal (I) in the forward direction and a signal part (R1) of the reflected signal (R) in the return direction at an arbitrarily chosen uncoupling point P in a fibre connection (46) of the network, detecting them and correlating them with one another. A device for performing such a positionally independent correlation OTDR is provided with uncoupling means (60) having a first signal output (68) and a second signal output (66), via which outputs the signal part (I1) and the signal part (R1), respectively, are fed to optical receivers (70 and 71). The signal parts received are detected by the receivers, demodulated and corresponding electrical signals are supplied to a correlator (78) which produces an OTDR signal for an OTDR imaging means (82). IMAGE
展开▼