Broadband electromagnetically induced transparency in metamaterials based on hybridization bandgap
Taocheng Zang,
Yongqiang Chen,
Yaqiong Ding,
Yong Sun,
Quanying Wu
Affiliations
Taocheng Zang
Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Physical Science and Technology, Suzhou University of Science and Technology, Suzhou 215009, China
Yongqiang Chen
Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Physical Science and Technology, Suzhou University of Science and Technology, Suzhou 215009, China
Yaqiong Ding
Science College, University of Shanghai for Science and Technology, Shanghai 200093, China
Yong Sun
Key Laboratory of Advanced Micro-Structure Materials, Ministry of Education, School of Physics Science and Engineering, Tongji University, Shanghai 200092, China
Quanying Wu
Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Physical Science and Technology, Suzhou University of Science and Technology, Suzhou 215009, China
We present a broadband electromagnetically induced transparency-like (EIT-like) effect in a microwave waveguide system by employing a bright meta-atom side-coupled to a linear chain of dark meta-atoms with a hybridization bandgap (HBG). We find that such a configuration can generate a wideband EIT response of up to 145 MHz, covering 23.7% of the central frequency. We also show that the EIT bandwidth can even extend to 211 MHz by further broadening the HBG while keeping the device volume unchanged. We emphasize that the EIT-like meta-molecules are subwavelength structures with only about one tenth of the operating wavelength. Our findings will be beneficial for realizing compact broadband slow light components in communication systems.
