| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for obtaining an optical wavelength multiplexing FSK modulation system combining optical FSK and optical WDM. <P>SOLUTION: An optical wavelength multiplexing FSK modulation system comprises: an optical WDM signal acquisition means 2; an optical FSK modulation means 3 for performing frequency modulation upon an optical WDM signal that is outputted by the optical WDM signal acquisition means, and obtaining an optical FSK signal containing an upper wave-band signal and lower wave-band signal; an optical WDM signal demodulation means 5 for demodulating the optical FSK signal that is outputted by the optical FSK modulation means into an optical WDM signal; and an optical FSK signal separation means 4 for separating the optical FSK signal that is outputted by the optical FSK modulation means into an upper wave-band signal and a lower wave-band signal. The optical FSK modulation means performs frequency modulation upon the optical WDM signal that is outputted by the optical WDM signal acquisition means 2, thereby obtaining the optical FSK signal, the optical WDM signal demodulation means demodulates the optical FSK signal into the optical WDM signal, and the optical FSK signal separation means separates the optical FSK signal into the upper wave-band signal and the lower wave-band signal, thereby obtaining an optical WDM signal and an optical FSK modulation signal. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
