| 摘要 |
PROBLEM TO BE SOLVED: To reduce a used amount of an optical element and achieve enhancement of a light utilization efficiency and a small size and a light weight.SOLUTION: A signal selection means of a signal receiving device comprises: a plurality of electrooptical conversion means for outputting an optical signal overlapped with an RF signal received from a connected RF antenna 1, the optical signal using a laser beam having a wavelength selected from wavelengths λ, λ, ..., λ; an optical signal transmission means for multiplexing optical signals outputted from the plurality of electrooptical conversion means, transmitting the multiplexed optical signal and then demultiplexing the multiplexed optical signal into optical signals of the same number as that of RF receivers 2; and a plurality of electrooptical conversion means for extracting an optical signal having a wavelength corresponding to the connected RF receiver 2 from the demultiplexed optical signals, converting the optical signal into an electric signal, and outputting the electric signal to the RF receiver 2. |
