PASSIVE OPTICAL NETWORK SYSTEM CAPABLE OF EFFECTIVELY UTILIZING COMMUNICATION BAND

摘要

PROBLEM TO BE SOLVED: To effectively utilize a communication band in a passive optical network system. SOLUTION: The passive light network system has an optical line terminal 1 for transmitting a plurality of kinds of distribution data with an optical signal, a plurality of optical network terminals 2a to 2c for receiving the distribution data with the optical signal, and a light branching device 3 for distributing the distribution data with the optical signal to the optical network terminals 2a to 2c in the state of the optical signal. Each of the plurality of the optical network terminals transmits the reception request of the distribution data desired to receive among the plurality of the kinds of distribution data transmitted by the optical line terminal 1 to the optical line terminal 1 by designating the kind of the distribution data desired to receive. The optical line terminal 1 transmits the kind of the distribution data designated by a reception request transmitted from the plurality of optical network terminal among the plurality of kinds of distribution data to the plurality of optical network terminals 2a to 2c.