中文摘要：

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。

英文摘要：

A terahertz wave phase shifter based on graphene was proposed. By adjusting the bias electric field, the conductivity of graphene could be changed evidently, so the passed terahertz wave＇s signal phase could be varied. The experimental results show that the phase shift and the transmission rate achieve 132° and 0.204 at the frequency of 3.731 THz respectively when the applied voltage is 1.85 V. The phase shifter has advantages of simplicity and low driving voltage. It can be used in terahertz medical imaging, terahertz communications, and other fields.