公开(公告)号：US06697577B1

公开(公告)日：2004-02-24

申请号：US09431165

申请日：1999-11-01

申请人： Jinghui Li ,  Hugues Tournier ,  Joel Milgram ,  Suet Yuen ,  LeRoy Pick ,  Stephen Roberts ,  Bernard Thiboutot

发明人： Jinghui Li ,  Hugues Tournier ,  Joel Milgram ,  Suet Yuen ,  LeRoy Pick ,  Stephen Roberts ,  Bernard Thiboutot

IPC分类号： H04B1006

CPC分类号： H04B10/695 ,  H04B2210/078

摘要： A tuning system for use in a receiver of an optical transmission system. The receiver includes a data channel transporting a data signal and a monitoring channel transporting a copy of the data signal. The tuning system includes a processing module for processing the copy of the data signal to generate a control signal conveying tuning information. This tuning information is used by the receiver to alter an operating point of the receiver on the data channel. The operating point of the receiver that is susceptible to be altered by the control signal is a decision threshold applied on the data signal to discriminate one binary value from another binary value on the data channel of the receiver. This approach allows, when required or desired, tuning of the system while the system is in service. This is possible since the tuning of the system is performed using the monitoring channel, and does not disturb nor corrupt the actual data being transported on the data channel.

摘要翻译： 一种用于光传输系统的接收机的调谐系统。 接收机包括传送数据信号的数据信道和传送数据信号的副本的监视信道。 调谐系统包括用于处理数据信号的副本以产生传送调谐信息的控制信号的处理模块。 该调谐信息被接收机用于改变数据信道上接收机的工作点。 容易被控制信号改变的接收机的工作点是施加在数据信号上的判定阈值，以将一个二进制值与接收机的数据信道上的另一个二进制值进行区分。 当需要或期望时，该方法允许在系统使用时调整系统。 这是可能的，因为系统的调谐是使用监视通道执行的，并且不会干扰或损坏在数据通道上传送的实际数据。