| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical signal transmission device capable of more stably transmitting data in consideration of the waveform variance due to operations of quickly driven deflecting optical system as regards the optical signal transmission device which transmits a data signal and a control signal one over the other and separates a data signal and a control signal from a received signal. <P>SOLUTION: A data signal D is modulated using a modulation system for modulation into a signal having no DC components, and a control signal S for controlling the deflecting optical system of the optical signal transmission device on a reception side is superposed on the modulated signal, so that the spectrum of the control signal S and the operation control band A of the deflecting optical system are present in a frequency band lower than that of the data signal D. <P>COPYRIGHT: (C)2007,JPO&INPIT |
