Full duplex electrical communication adapted to optical link

A node configured for full-duplex communication over an electrical interface and an optical link, the node comprising:

• signal-separation circuitry configured to obtain a first node electrical transmit signal from a full-duplex electrical communication signal present on the electrical interface;
• transmit components configured to convert the first node electrical transmit signal to a first node optical transmit signal and to send the first node optical transmit signal over at least one optical link;
• and
• receive components configured to receive a peer optical transmit signal from the at least one optical link and to convert the peer optical transmit signal to a peer electrical transmit signal,
• wherein the full-duplex electrical communication signal comprises a superposition of the first node electrical transmit signal and the peer electrical transmit signal.

A communication system comprising:

• a first node and a second node interconnected by at least one optical link, each of the first node and the second node comprising:
• signal-separation circuitry configured to:
• obtain a local electrical transmit signal from a full-duplex electrical communication signal present on an electrical interface;
• transmit components configured to convert the local electrical transmit signal to an optical transmit signal and to send the optical transmit signal over the at least one optical link;
• and
• receive components configured to receive a counterpart optical transmit signal from the at least one optical link and to convert the counterpart optical transmit signal to a counterpart electrical transmit signal,
• wherein, at each node, the full-duplex electrical communication signal comprises a superposition of the local electrical transmit signal and the counterpart electrical transmit signal.