Optical transiver system for a combined wire and wireless service

PURPOSE: A light transmitting system for supplying a wire-wireless complex service is provided to supply a plurality of wireless communication services and wire communication services with using the same optical cable. CONSTITUTION: A light transmitting-receiving parts of a service side(100,200) convert a signal of the service side into a light signal for transmitting forward, and convert a reversely transmitted light signal into an electric frequency signal. A light transmitting-receiving parts of a subscriber side(300-1,...,300-N,301-1,...,301-N) convert the forward converted light signal into an electric frequency signal and convert a signal of the subscriber side into a light signal for transmitting reversely. A wavelength selective coupler(158) selectively branches the forward light signal and the reverse light signal transmitted from the light transmitting-receiving parts of the service side and the subscriber side through an optical cable according to the wavelength.