OPTICAL TRANSMITTING AND RECEIVING EQUIPMENT

摘要

PROBLEM TO BE SOLVED: To provide an optical transmitting and receiving equipment to be installed on the side of a terminal which can consists of a small number of parts in an optical communication system for performing bi-directional communication by light of a first wavelength zone λ1 and performing one-way communication from the side of a station to the side of the terminal by light of a second wavelength zone λ2 . SOLUTION: A bi-directional communication function part 111 for transmitting/receiving the light of the first wavelength zone λ1 is arranged at the tip of an optical fiber 121. A WDM filter 132 for transmitting the light of the first wavelength zone λ1 and reflecting the light of a second wavelength zone λ2 is arranged at the prestage of the bi-directional communication function part. A light receiving element 131 for receiving the light of a second wavelength zone λ2 is provided at the position of receiving the light reflected by this WDM filter.