OPTICAL WAVELENGTH MULTIPLEXING DEVICE, OPTICAL TRANSMISSION DEVICE, AND ABNORMALITY DETERMINATION METHOD

摘要

An optical wavelength multiplexing device includes: a wavelength selective switch including a first input port for receiving an optical signal, a second input port for receiving a monitoring signal, output ports for outputting the optical signal or the monitoring signal, and an adjustment unit that adjusts a level of the optical signal or the monitoring signal at one of the output ports; a measurement unit that measures an output level of the monitoring signal at one of the output ports; and a control unit that specifies an unused output port of the output ports as a monitoring target port; sets a specific adjustment amount to the monitoring target port; outputs the monitoring signal to the monitoring target port; and determines whether the monitoring target port has an abnormality, based on the output level at the monitoring target port and an estimated output level at the monitoring target port.

主权项

1. An optical wavelength multiplexing device comprising:
a wavelength selective switch that includes a first input port through which an optical signal is input, a second input port through which a monitoring signal corresponding to a monitoring optical signal is input, a plurality of output ports through which the optical signal or the monitoring signal is output, and an adjustment unit that adjusts a level of the optical signal or the monitoring signal output to one of the plurality of output ports; a measurement unit that measures an output level of the monitoring signal at one of the plurality of output ports; and a control unit that controls the wavelength selective switch and the measurement unit; wherein the control unit: specifies an unused output port from among the plurality of output ports as a monitoring target port; sets an adjustment amount of the monitoring target port at a specific adjustment amount; outputs the monitoring signal to the monitoring target port; and determines whether the monitoring target port has an abnormality, based on the output level of the monitoring signal at the monitoring target port, which is measured by the measurement unit, and an estimated output level of the monitoring signal at the monitoring target port when the specific adjustment amount is set.