WAVELENGTH DIVISION MULTIPLEXING EQUIPMENT AND METHOD FOR DISPERSION COMPENSATION OF OPTICAL SIGNAL

摘要

For the purpose of reducing the restoration time in the event of line disturbance on an optical network, a transponder (21) has an active line (41) and a standby line (43), while a transponder (22) has an active line (42) and a standby line (44). The standby line (44) for the transponder (22) is accommodated on the same optical line as the active line (41) for the transponder (21). Upon detection of any line disturbance, a receiving-side transponder (24) obtains the VDC setting value of the active line (41) for a transponder (23), and sets up the VDC setting value for the standby line (44).