| 摘要 |
PURPOSE:To make the size of the transmitter-receiver small, to reduce the power consumption, to facilitate alignment of optical axes and to prevent interference among plural areas. CONSTITUTION:Transmission and reception are conducted by means of optical signals among a repeater C provided to partition plates P1, P2, and transmitter- receiver sets T1 to T4 installed in space areas Z1 to Z4 divided by the partition plates P1, P2 and connecting to data termminal equipments D1 to D4. Thus, the data are sent among the data terminal equipments D1 to D4 in different space areas. |
