Patent ID: 9014569
Filing Date: 2015-04-21
Classification: H04B,H04J

Abstract:
1. An optical node comprising: a transmitter to produce an optical supervisory signal for supervising an optical network; a manager to manage first configuration information or second information, the first configuration information indicating that the optical node is an optical add-drop multiplexer node and has no post amplifiers, the second configuration information indicating that the optical node is not the optical add-drop multiplexer node and has no post amplifiers; a processor that is operative to perform control of a power level of the optical supervisory signal according to a per-wavelength power level of an optical communication signal in the case of recognizing the first configuration information, and to stop performing the control in the case of recognizing the second configuration information; a multiplexer to combine the optical supervisory signal after adjusting the power level by the processor with the optical communication signal to be transmitted to another optical node located downstream; and a storage to store information indicating a per-wavelength power level of the optical communication signal entering the multiplexer; wherein the processor is operative to adjust the power level of the optical supervisory signal, and to control the adjusting such that the adjusted power level of the optical supervisory signal matches with the per-wavelength power level which is indicated by the information in the storage, when the optical node is an optical add-drop multiplexer node using in-line amplifiers.