提出了一种基于石墨烯的太赫兹波移相器。通过调节偏置电场的大小,石墨烯的电导率会发生显著改变,从而改变了通过的太赫兹波信号相位。实验结果表明,当外加电压增加到1.85 V时,在3.731 THz频率处相移量可达132°,传输率达到0.204。本移相器具有结构简单、驱动电压小的优点,在太赫兹波医疗成像、通信等领域具有广泛的应用前景。 A graphene-based terahertz wave phase shifter is proposed. By adjusting the size of the bias electric field, the conductivity of graphene changes significantly, changing the phase of the terahertz wave signal passing through. Experimental results show that when the applied voltage is increased to 1.85 V, the phase shift amounts to 132 ° at the frequency of 3.731 THz, and the transmission rate reaches 0.204. The phase shifter has the advantages of simple structure and small driving voltage, and has wide application prospect in the fields of terahertz wave medical imaging and communication.