Tunable optical switching via magnetostatic field modulation in a small-radius hyperbolic metamaterial bent waveguide at THz frequencies
Abstract
A bent waveguide (BWG) made of hyperbolic material (such as indium arsenide) is designed to enable optical switching and modulation. The BWG comprises two straight waveguides and a 90o bent section, engineered to characterize its propagation length, figure of merit, propagation loss, and transmission spectra. Upon perpendicular application of an external magnetostatic field (B0) with increasing intensity, the transmission spectra exhibit a distinct conduction region (ON state) and a cutoff region (OFF state). Operating over a 1–8 THz bandwidth, the BWG achieves 85% transmission at a minimum radius of 3 μm, corresponding to 1/100 to 1/10 of the incident wavelength. This magnetically tunable BWG provides critical insights into the development of next-generation integrated terahertz photonics.
Article Details
Journal Info
Journal of Applied Physics
American Institute of Physics
Authors (7)
Sheng Zhou
Yue Liu
Mingze Sun
Shu Fang Fu
Key Laboratory for Photonic and Electronic Bandgap Materials, Chinese Ministry of Education, and School of Physics and Electronic Engineering, School of Physics and Electronic Engineering, Harbin Normal University 3 , Harbin 150025,
Qiang Zhang
Xiang Guang Wang
Key Laboratory for Photonic and Electronic Bandgap Materials, Chinese Ministry of Education, and School of Physics and Electronic Engineering, School of Physics and Electronic Engineering, Harbin Normal University 3 , Harbin 150025,
Xuan Zhang Wang
Key Laboratory for Photonic and Electronic Bandgap Materials, Chinese Ministry of Education, and School of Physics and Electronic Engineering, School of Physics and Electronic Engineering, Harbin Normal University 3 , Harbin 150025,