Control system, control apparatus, network apparatus, control method and program

A control device comprising:

• a processor;
• a storage medium having computer program instructions stored thereon, wherein the computer program instruction, when executed by the processor, perform processing of:
• performing communication using an optical signal with a plurality of terminal equipments that is external equipments that transmit a control signal that is an optical signal for controlling an operation of a control system required for optical communication and a non-control signal that is an optical signal that is not the control signal;
• and
• a control transceiver that is connected to any one of wave division multiplexers that are provided for each of the terminal equipments and demultiplex a signal in a band of the control signal and a signal in a band of the non-control signal, and performs conversion between an optical signal and an electric signal, wherein
• the processor controls an operation of a network equipment including the wave division multiplexer, a control optical switch that switches the wave division multiplexer that is a connection destination of the control transceiver, a distribution circuit that includes one or a plurality of input ports on which an optical signal is incident and one or a plurality of output ports from which the optical signal incident on the input port is output and is capable of changing a correspondence relationship between the input ports and the output ports, and a power monitor that measures a strength of the optical signal,
• the control signal is a signal transmitted and received between the terminal equipment and processor, and is a signal for one to control an other,
• the control transceiver converts the signal in the band of the control signal demultiplexed by the wave division multiplexer that is a connection destination to an electric signal,
• the processor executes processing of:
• communicating with the terminal equipment based on information indicated by the electric signal, acquiring propagation destination information indicating a propagation destination of a non-control signal, controlling the distribution circuit so that a non-control signal propagates to the propagation destination indicated by the propagation destination information, and switching a connection destination of the control transceiver by controlling an operation of the control optical switch based on a measurement result of the power monitor, and
• a number of the control optical switches is smaller than a number of the terminal equipments.

A network equipment comprising:

• a wave division multiplexer that is provided for each of a plurality of terminal equipments that is external equipments that transmit a control signal that is an optical signal for controlling an operation of a control system required for optical communication and a non-control signal that is an optical signal that is not the control signal and demultiplexes a signal in a band of the control signal and a signal in a band of the non-control signal;
• a control optical switch that switches the wave division multiplexer that is a connection destination of the control transceiver included in a control equipment including:
• a processor;
• a storage medium having computer program instructions stored thereon, wherein the computer program instruction, when executed by the processor, perform processing of:
• performing communication using an optical signal with a plurality of the terminal equipments and the control transceiver that is connected to any one of the wave division multiplexers and performs conversion between an optical signal and an electric signal;
• a distribution circuit that includes one or a plurality of input ports on which an optical signal is incident and one or a plurality of output ports from which the optical signal incident on the input port is output and is capable of changing a correspondence relationship between the input ports and the output ports;
• and
• a power monitor that measures a strength of the optical signal, wherein
• the control signal is a signal transmitted and received between the terminal equipment and the processor, and is a signal for one to control an other,
• the control transceiver converts the signal in the band of the control signal demultiplexed by the wave division multiplexer that is a connection destination to an electric signal,
• the processor executes processing of:
• communicating with the terminal equipment based on information indicated by the electric signal, acquiring propagation destination information indicating a propagation destination of a non-control signal, controlling the distribution circuit so that a non-control signal propagates to the propagation destination indicated by the propagation destination information, and switching a connection destination of the control transceiver by controlling an operation of the control optical switch based on a measurement result of the power monitor, and
• a number of the control optical switches is smaller than a number of the terminal equipments.