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High Speed Terahertz Modulator on the Chip Based on Tunable Terahertz Slot Waveguide

机译:基于可调太赫兹缝隙波导的芯片上高速太赫兹调制器

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摘要

This paper presents an on-chip device that can perform gigahertz-rate amplitude modulation and switching of broadband terahertz electromagnetic waves. The operation of the device is based on the interaction of confined THz waves in a novel slot waveguide with an electronically tunable two dimensional electron gas (2DEG) that controls the loss of the THz wave propagating through this waveguide. A prototype device is fabricated which shows THz intensity modulation of 96% at 0.25 THz carrier frequency with low insertion loss and device length as small as 100 microns. The demonstrated modulation cutoff frequency exceeds 14 GHz indicating potential for the high-speed modulation of terahertz waves. The entire device operates at room temperature with low drive voltage (<2 V) and zero DC power consumption. The device architecture has potential for realization of the next generation of on-chip modulators and switches at THz frequencies.
机译:本文介绍了一种可以执行千兆赫兹速率幅度调制和宽带太赫兹电磁波切换的片上设备。该设备的操作基于新型缝隙波导中的受限THz波与可电子调谐的二维电子气(2DEG)的相互作用,该电子气可控制通过该波导传播的THz波的损耗。制造了一个原型器件,该器件在0.25 THz载波频率下显示出96%的THz强度调制,插入损耗低,器件长度小至100微米。所示的调制截止频率超过14 GHz,表明有可能对太赫兹波进行高速调制。整个器件在室温下以较低的驱动电压(<2 V)和零直流功耗工作。该器件架构具有实现THz频率的下一代片上调制器和开关的潜力。

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