COMMUNICATION DEVICE, COMMUNICATION METHOD, AND COMMUNICATION SYSTEM

摘要

There is provided a communication device that includes: a communication unit that supplies a first signal to an optical transmitter and receives a second signal from an optical receiver, in which the optical transmitter transmits an optical signal, and the optical receiver receives an optical signal; and a coupling detection unit that performs a first coupling detecting operation that involves detection of coupling to a communication partner with use of an electrical signal.