| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical remote antenna capable of outputting to two mutually separated spots, by removing constitutional factors to attenuate intensity of a light signal or to deteriorate a signal quality. SOLUTION: In this optical remote antenna having an antenna 12 for receiving an electric field and for inducing a voltage corresponding to an electromagnetic wave, a light source 11, a light modulator 13 for generating modulated light from light sent from the light source 11 corresponding to the voltage, and a photodetector 19 for receiving a light signal and for converting it into an electric signal, the light modulator 13 comprises a light branch circuit part, a light phase modulation part and a directivity coupler type light combination part, and the light signal is composed so as to comprise two light signals having mutually supplemental intensities, and the two light signals are converted into electric signals respectively independently. |
