FREQUENCY MULTIPLEX RADIO TRANSMISSION DEVICE

To provide a frequency multiplex photoelectric conversion device which makes low phase noise and bulk radio communications possible in terahertz bands.SOLUTION: A frequency multiplex photoelectric conversion device comprises: a plurality of micro optical resonators 201-204 each excited by laser light emitted from a plurality of laser light-emitting units 101-104 and generating optical frequency combs at mutually different frequency intervals in 100 GHz or higher and 3 THz or lower; modulation optical signal generation units 301-304 including a plurality of optical modulation sections 3013 each separating a couple of mutually adjacent optical frequency modes from each optical frequency combs and performing optical modulation on one optical frequency mode included in the optical frequency mode couple and a plurality of mixing sections 3020 each mixing the one optical frequency mode in which the optical modulation is performed with the other optical frequency mode on which the optical modulation is not performed; and a plurality of photoelectric conversion elements 401-404 connected to outputs of the mixing parts 3020.SELECTED DRAWING: Figure 2 【課題】テラヘルツ帯域において低位相ノイズ、かつ、大容量の無線通信を可能にする周波数多重光電気変換装置を提供する。【解決手段】周波数多重光電気変換装置は、複数のレーザー発光部１０１～１０４から発するレーザー光で励起され、１００ＧＨｚ以上３ＴＨｚ以下の互いに異なる周波数間隔の光周波数コムを生成する複数の微小光共振器２０１～２０４と、各光周波数コムから互いに隣接する光周波数モード対を分離し、当該光周波数モード対に含まれている一方の光周波数モードに対して光変調を行う複数の光変調部３０１３及び光変調された一方の光周波数モードと光変調されていない他方の光周波数モードを混合する複数の混合部３０２０を含む変調光信号生成部３０１～３０４と、混合部３０２０の各出力に接続された複数の光電気変換素子４０１～４０４と、を備える。【選択図】図２