| 摘要 |
<p>Known aircraft intercom systems, in which audio signals are carried over wires, are prone to electrical noise interference problems. These problems are alleviated by the present invention in which the transceivers and receivers are interconnected with the control sets via fibre optic lines. Audio signals are applied to a multiplexer which drives an optical modulator. The output of the optical modulator feeds a fiber optic line. Conversely, optical signals are fed to an optical demodulator whose output feeds a demultiplexer. Audio outputs from the demultiplexers feed the receivers and transceivers and the control sets.</p> |
