Patent Number: 7,133,611

Title: Main signal controlling apparatus and method in a WDM optical communications system

Abstract: If a repeater supervisory control (SV), a pre-emphasis automatic adjustment (PE), a receiving side threshold value automatic adjustment (Vth), a transmitting side dispersion compensation value setting (VDC(T)), and a receiving side dispersion compensation value setting (VDC(R)) are executed for an optical main signal, these controls are executed in the above described priority order. Accordingly, if the controls are independently executed, or if two or more controls simultaneously occur, a control with a higher priority is executed. In this way, a transmission quality of an optical signal is prevented from being badly influenced as a result that the controls are simultaneously executed.

Inventors: Kaneko; Shinichi (Kawasaki, JP)

Assignee: Fujitsu Limited

International Classification: H04B 10/08 (20060101)

Expiration Date: 2019-11-07 0:00:00