| 摘要 |
PROBLEM TO BE SOLVED: To provide a system, with which two-way communication of the same wavelength can be economically performed at the maximum transmitting velocity of a transmitter/receiver by one optical fiber in a communication system for performing two-way optical transmission between stations while using one optical fiber. SOLUTION: In the optical two-way communication system configured to perform two-way optical transmission by transmitting an optical signal from one station to the other station while using one optical fiber connected through a photocoupler and receiving the optical signal sent from the other station by the optical fiber after decoupling the optical signal in the photocoupler, each of station equipment is provided with a transmitter/receiver composed of an optical transmitter for converting transmitting data to optical signals and sending them through the photocoupler to the optical fiber, an optical receiver for receiving the optical signals on the optical fiber through the photocoupler and converting them to received data and a photocoupler, with which a coupling/decoupling ratio in the transmitting direction of the transmitter/ receiver is made smaller than that in the receiving direction of the transmitter/receiver, optically connected to the optical receiver, the optical transmitter and the optical fiber. |
