PHOTOELECTRIC CONVERSION DEVICE

To enable low phase noise and large capacity wireless communication in a terahertz band.SOLUTION: The present invention comprises: a laser emission unit that emits a single frequency laser beam; an optical micro-resonator that is excited by the laser beam and generates an optical frequency comb havi...

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Bibliographische Detailangaben
Hauptverfasser:	KISHIKAWA HIRONORI, YASUI TAKESHI, KUZE NAOYA, OKAMURA YASUHIRO, TOKIZANE YU, HASE EIJI, FUJIKATA JUNICHI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY FREQUENCY-CHANGING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF TRANSMISSION
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Beschreibung
Zusammenfassung:	To enable low phase noise and large capacity wireless communication in a terahertz band.SOLUTION: The present invention comprises: a laser emission unit that emits a single frequency laser beam; an optical micro-resonator that is excited by the laser beam and generates an optical frequency comb having a frequency interval of 100 GHz to 3 THz inclusive; an optical modulation unit that modulates the amplitude and/or the phase with a baseband signal composed of a transmit information signal, regarding at least one of mutually adjacent first and second optical frequency modes in the optical frequency comb; a mixing unit that mixes the modulated first and second optical frequency modes; and a photoelectric conversion unit that converts an output signal of the mixing unit into an electrical signal.SELECTED DRAWING: Figure 1 【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。【解決手段】単一周波数のレーザー光を発するレーザー発光部と、前記レーザー光で励起され、１００ＧＨｚ以上３ＴＨｚ以下の周波数間隔を有する光周波数コムを生成する微小光共振器と、前記光周波数コムにおいて互いに隣接する第１および第２の光周波数モードの少なくともいずれかの光周波数モードに対して、振幅と位相の少なくとも一方を伝送情報信号からなるベースバンド信号で変調する光変調部と、前記変調された第１および第２の光周波数モードを混合する混合部と、前記混合部の出力信号を電気信号に変換する光電気変換部を備えた。【選択図】図１