JPS6418324A - Data transmission equipment - Google Patents

Abstract

PURPOSE:To attain high speed transmission of a clock signal and a data signal by sending 1st and 2nd optical signals converted by an electrooptic conversion means while synthesizing them, demultiplexing the result depending on frequencies by a demultiplex means and converting them into electric signals separately. CONSTITUTION:In applying a clock to a clock signal line 101, it is converted into the intensity signal of light by a 2nd electrooptic conversion means 131 and the result is outputted to an optical fiber 161. Similarly, the data is converted into the light intensity signal by a 1st electrooptic conversion means 132 and outputted to the optical fiber 162. The both are synthesized by a synthesizer 150 and the result is outputted to a transmission means 120. Since the stimulated frequency of laser diodes 131, 132 is designed to be different from each other such as f0 and f1, they can be separated even after the mixing. The light signal to be sent is separated by a frequency filter of a demultiplex means 151 and sent to optical fibers 163, 164. The optical signals are converted into electric signals by photodiodes 141, 142 and clock and data signals are obtained.