COMMUNICATION APPARATUS AND METHOD

摘要

A communications device is disclosed and includes: a first acquiring unit (10) for acquiring first specific wavelength light and second specific wavelength light from a first optical path; a first receiving unit (30) for converting the first specific wavelength light coming from the first acquiring unit (10) into a first electrical signal; a first control unit (40) for sending a first modulating signal to a first loopback unit (20) according to the first electrical signal coming from the first receiving unit (10); and the first loopback unit (20) for modulating the second specific wavelength light coming from the first acquiring unit (10) according to the first modulating signal, and looping the modulated second specific wavelength light back to a second optical path, where a transmission direction of an optical signal in the second optical path is opposite to a transmission direction of an optical signal in the first optical path. The present invention further discloses a communications method. According to embodiments of the present invention, communication with a terminal-station device can be implemented, without the need of separately providing a light source, and service performance of communications can be effectively ensured.