Control device for optical channel monitor, optical transmission device, and method of controlling optical channel monitor

An optical transmission device, comprising:

• an optical channel monitor;
• and
• a control device including at least one of processor and circuit,
• the at least one of processor and circuit configured to stop calibration of a measured wavelength when no wavelength peak of incoming light is detected from, the optical channel monitor measuring a light intensity at the measured wavelength,
• the at least one of processor and circuit configured to determine presence of a wavelength peak in the incoming light when detecting incoming light with a light intensity equal to or more than a given intensity,
• the at least one of processor and circuit configured to permit the calibration of the measured wavelength which has been stopped to be resumed when the wavelength peak is determined to be present.

A method of controlling an optical channel monitor, comprising:

• stopping calibration of a measured wavelength when no wavelength peak of incoming light is detected, the optical channel monitor measuring a light intensity at the measured wavelength;
• determining presence of a wavelength peak in the incoming light when detecting incoming light with a light intensity equal to or more than a given intensity;
• and
• permitting the calibration of the measured wavelength which has been stopped to be resumed when the wavelength peak is determined to be present in the determination.