Add/drop multiplexer, network system, transmission method, non-transitory computer readable medium, and management device

An optical communication system comprising;

• a network management apparatus, and
• an optical communication apparatus;
• wherein
• the network management apparatus controls the optical communication apparatus;
• and
• the optical communication apparatus comprising;
• an attenuator configured to attenuate an optical signal from a target connected to the optical communication apparatus;
• and
• a controller configured to receive, from the network management apparatus, a connection information of the target and send, to the attenuator, an attenuation amount according to the connection information,
• wherein the connection information indicates the connection relationship between the target and the attenuator, and the controller sends, based on the connection information, the attenuation amount corresponding to a first optical device when the target is the first optical device, and sends the attenuation amount corresponding to a second optical device when the target is the second optical device.

An optical communication method for an optical communication apparatus, the optical communication method comprising;

• attenuating an optical signal from a target connected to the optical communication apparatus;
• and
• receiving a connection information of the target and attenuating the optical signal with an attenuation amount according to the connection information,
• wherein the connection information indicates the connection relationship between the target and the attenuator, and based on the connection information, the attenuation amount is determined to be an amount corresponding to a first optical device when the target is the first optical device, and is determined to be an amount corresponding to a second optical device when the target is the second optical device.