OPTICAL COMMUNICATION DEVICE, OPTICAL TRANSMISSION APPARATUS, AND OPTICAL TRANSMISSION METHOD

摘要

An objective of the invention is to solve the problem wherein, in an optical transmission apparatus using a phase shift apparatus, it becomes difficult to establish a correspondence between the phase of shifted light and information which is transmitted, thus complicating the configuration of an optical receiving apparatus thereof. This optical communication device comprises: an optical transmission apparatus which outputs a transmission light which is phase shifted on the basis of transmission information; an optical receiving apparatus which receives and demodulates the phase shifted light; and an optical feedback unit which introduces a portion of the transmission light to the optical receiving apparatus. The optical transmission apparatus further comprises a light source which outputs a sequential light, a phase shift unit which phase shifts the sequential light on the basis of the transmission information, and a control unit which controls the operation of the phase shift unit. The optical receiving apparatus acquires receiving information by demodulating the transmitted light which is obtained from the optical feedback unit and transmits the receiving information to the control unit. The control unit controls the operation of the phase shift unit on the basis of the transmission information and the receiving information.