OPTICAL WAVELENGTH MULTIPLEXING DEVICE, OPTICAL TRANSMISSION DEVICE, AND ABNORMALITY DETERMINATION METHOD
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...
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Main Authors | , , , , |
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Format | Patent |
Language | English |
Published |
20.10.2016
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Subjects | |
Online Access | Get full text |
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Summary: | 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. |
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Bibliography: | Application Number: US201615079006 |