An electrically tunable terahertz metamaterial modulator with two independent channels

作者：Bai, Yang; Chen, Kejian^*; Bu, Ting; Zhuang, Songlin

来源：Journal of Applied Physics, 2016, 119(12): 124505.

DOI：10.1063/1.4944711

• HIGH-SPEED

An electrically tunable terahertz modulator with two independent channels employing a hybrid metamaterial is established. The implemented Schottky structures consist of metallic squares with tips and crosses, which form two types of Schottky structures on an n-doped gallium arsenide (GaAs). By selecting one or both types of Schottky structures to connect to the Ohmic contact, under a bias voltage, a depletion zone can be generated and the semiconductor conductivity can be actively controlled to modulate the transmission of a corresponding channel band or both the channels. Such an electrically controlled modulator with two independent channel bands paves the way to achieving terahertz communication and is more conducive to practical applications.

• 出版日期2016-3-28
• 单位上海理工大学