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; an excitation laser 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 optical bandpass filter that independently separates any optical frequency mode of optical frequency modes that constitute the optical frequency comb and an adjacent optical frequency mode that is away by the repetition frequency; an optical circulator that performs optical amplification by injecting and synchronizing the separated optical frequency mode and adjacent optical frequency mode into slave lasers with wavelengths adjacent to each; an electrical/optical conversion element provided in a receiving unit of the receiving antenna and further optically modulates the optical frequency mode in accordance with the radio signal; and an optical bandpass filter that separates modulation components of the adjacent optical frequency mode and the optical frequency mode adjacent to it.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励起レーザーと、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と繰り返し周波数離れた隣接光周波数モードとをそれぞれ独立に分離する光バンドパスフィルターと、前記分離された光周波数モードと隣接光周波数モードを、それぞれに隣接した波長を有するスレーブレーザーに注入同期して光増幅を行う光サーキュレーターと、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、前記隣接周波数モードとそれに隣接する前記光周波数モードの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