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1. 发明授权

US5510917A Optical communication monitoring and control 失效
标题翻译：光通信监控
公开(公告)号：US5510917A
公开(公告)日：1996-04-23
申请号：US417461
申请日：1995-04-04
申请人： Michael Corke , Dean A. Werthman , Robin M. Moran , David W. Stowe , Neville J. Ronan , Amy R. Beaudet
发明人： Michael Corke , Dean A. Werthman , Robin M. Moran , David W. Stowe , Neville J. Ronan , Amy R. Beaudet
IPC分类号： H04B10/077 , H04B10/079 , H04J14/02 , H04B10/08
CPC分类号： H04J14/029 , H04B10/077 , H04B10/07953 , H04B10/07955 , H04J14/0279
摘要： For communicating over optical routes, route monitoring and protection are provided. In routes carrying signals on each of a number of wave lengths a tapped fraction of the signal is demultiplexed and an individual wave length is detected for determining performance and for triggering switching to alternative monitored routes carrying the same signal. Switching of all wave lengths if one shows faulty, with either a single wave length or all wave lengths being monitored is shown. Performance of a long wave length component is employed to determine route quality for shorter wave lengths as well. In bi-directional communication systems, performance of a wave length moving in one direction through a route determines route quality for transmission in the other direction, as well. Progressive sampling and digitization of the tapped signal and comparison to a digitized reference enables high sensitivity of monitoring. Detected average intensity of a tapped wave length, detected error rate in tapped wave lengths and use of performance data fed back from the receiver telecommunication equipment are used to control switching from one monitored route to another. In a unidirectional system, a wideband coupler at the transmitter is used both to merge signals at various wave lengths and to distribute energy at each of the wave lengths to each route.
摘要翻译：为了通过光路进行通信，提供路由监控和保护。在多个波长中的每一个上携带信号的路由中，信号的抽头分数被解复用，并且检测单个波长以确定性能并且用于触发切换到携带相同信号的替代监视路由。显示所有波长的切换，如果显示有故障，单个波长或被监测的所有波长。使用长波长分量的性能来确定较短波长的路线质量。在双向通信系统中，通过路线沿一个方向移动的波长的性能也决定了在另一个方向上传输的路由质量。轻触信号的逐行采样和数字化以及与数字化参考的比较可实现高灵敏度的监控。检测到的抽头波长的平均强度，抽头波长的检测误差率和使用从接收机电信设备反馈的性能数据，用于控制从一个被监控的路由到另一个的转换。在单向系统中，发射机处的宽带耦合器被用于合并各种波长的信号，并且在每个波长的每个路径上分配能量。

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