RADIO RECEIVING DEVICE

To enable seamless connection between high-frequency wireless communication and optical communication.SOLUTION: A radio receiving device for receiving a radio signal modulated with an information signal includes: a receiving antenna; a laser emitting element that outputs laser light of a predetermined wavelength; a micro-optical resonator that is excited by the laser light and generates an optical frequency comb with a repetition frequency that differs from the frequency of a carrier of the radio signal by a differential frequency; an electrical/optical conversion element that is provided in a receiving unit of the receiving antenna and further optically modulates any optical frequency mode of optical frequency modes constituting the optical frequency comb in accordance with the radio signal; and an optical bandpass filter that separates a modulation component of the optical frequency mode and also separates a non-modulation component that is of an adjacent frequency mode being a repetition frequency away from the optical frequency mode and that is closest adjacent to the modulation component of the optical frequency mode.SELECTED DRAWING: Figure 1 【課題】高周波無線通信と光通信とのシームレス接続を可能にする。【解決手段】情報信号で変調された無線信号を受信する無線受信装置であって、受信アンテナと、所定の波長のレーザー光を出力するレーザー発光素子と、前記レーザー光で励起され、前記無線信号のキャリアの周波数と差分周波数だけ異なる繰り返し周波数の光周波数コムを生成する微小光共振器と、前記受信アンテナの受信部に設けられ、さらに前記光周波数コムを構成する光周波数モードのうち任意の光周波数モードを前記無線信号に応じて光変調する電気／光変換素子と、前記光周波数モードの変調成分を分離し、併せて、前記光周波数モードと繰り返し周波数離れた隣接周波数モードであって前記光周波数モードの変調成分と最も近くに隣接する非変調成分を分離する光バンドパスフィルターとを有する。【選択図】図１