| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a light wavelength multiplex FSK modulation system in which light FSK and light WDM are combined, and a method of obtaining a light wavelength multiplex signal and an light FSK modulated signal by using such a system. <P>SOLUTION: The light wavelength multiplex FSK modulation system is equipped with a light wavelength multiplex signal acquisition means (2), a light frequency shift keying modulation means (3), a light wavelength multiplex signal demodulation means (4), and a light frequency shift keying signal separation means (4) of separating a light frequency shift keying signal output by the light frequency shift keying modulation means into an upper sideband signal and a lower sideband signal, and frequency-modulates the light wavelength multiplex signal to obtain the light frequency keying signal; and the light wavelength multiplex signal demodulation means demodulates the light frequency shift keying signal into a light wavelength multiplex signal and the light frequency shift keying signal separation means separates the light frequency keying signal into the upper sideband signal and lower sideband signal to obtain the light wavelength multiplex signal and light FSK modulation signal. <P>COPYRIGHT: (C)2007,JPO&INPIT |
