Terahertz near-zero reflection modulator based on cascaded electrical length reconfiguration
Abstract
Return loss is a core indicator of module connectivity performance in integrated communication systems. Reflections from the modulation device can cause power fluctuations, leading to excessive amplitude noise affecting the system's signal-to-noise ratio. To solve the problem of high return loss in existing terahertz amplitude modulation techniques, this paper proposes a near-zero reflection terahertz modulator based on an electrical length reconfiguration cascade. The ON-OFF effect of the modulator is achieved through the cascade's electrical length reconstruction, and the reflections are effectively suppressed from the ON state to the OFF state. Experimental results demonstrate that the proposed modulator achieves a broadband low-reflection effect in the 170–260 GHz band, with a Voltage Standing Wave Ratio (VSWR) of less than 1.5 over a bandwidth of 60 GHz and an optimal VSWR of 1.1. It has the potential to support high-speed response as well as the large-capacity, high-rate data transmission. Accordingly, the proposed modulator offers a promising solution for the design of high-performance terahertz modulators and multi-channel integrated terahertz communication systems.
Article Details
Journal Info
Applied Physics Letters
American Institute of Physics
Authors (10)
Chunyang Bi
School of Electronic Science and Engineering, University of Electronic Science and Technology of China 1 , Chengdu 610054,
Sen Gong
School of Electronic Science and Engineering, University of Electronic Science and Technology of China 1 , Chengdu 610054,
Kesen Ding
School of Electronic Science and Engineering, University of Electronic Science and Technology of China 1 , Chengdu 610054,
Liyu Cheng
School of Electronic Science and Engineering, University of Electronic Science and Technology of China 1 , Chengdu 610054,
Huajie Liang
Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China 4 , Huzhou 313001,
Hongxin Zeng
School of Electronic Science and Engineering, University of Electronic Science and Technology of China 1 , Chengdu 610054,
Lan Wang
Shixiong Liang
Ziqiang Yang
Center for High Pressure Science and Technology Advanced Research
Yaxin Zhang
Key Laboratory of Analytical Science and Technology of Hebei Province, Hebei Research Center of the Basic Discipline of Synthetic Chemistry, College of Chemistry and Materials Science