Communications in Physics, Vol. 30, No. 2 (2020), pp. 189-196 DOI:10.15625/0868-3166/30/2/14843 ALL-DIELECTRIC METAMATERIAL FOR ELECTROMAGNETICALLY- INDUCED TRANSPARENCY IN OPTICAL REGION PHAM THE LINH 1,2 , NGUYEN THI VIET NINH 3 , NGUYEN DINH QUANG 4 , TRAN TIEN LAM 5 , NGUYEN VAN NGOC 1,2 , BUI XUAN KHUYEN 1 , NGUYEN THI HIEN 3 , VU DINH LAM 2 AND BUI SON TUNG 1, † 1 Institute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam 2 Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam 3 Faculty of Physics and Technology, Thai Nguyen University of Science, Thai Nguyen, Vietnam 4 Department of Physics, University of Science, Vietnam National University, Hanoi, Vietnam 5 Faculty of Physics, Thai Nguyen University of Education, 20 Luong Ngoc Quyen, Thai Nguyen, Vietnam † E-mail: tungbs@ims.vast.ac.vn Received 20 February 2020 Accepted for publication 27 April 2020 Published 25 May 2020 Abstract. Metamaterial (MM) is emerging as a promising approach to manipulate electromag- netic waves, spanning from radio frequency to the optical region. In this paper, we employ an effect called electromagnetically-induced transparency (EIT) in all-dielectric MM structures to create a narrow transparent window in opaque broadband of the optical region (580-670 nm). Using dielectric materials instead of metals can mitigate the large non-radiative ohmic loss on the metal surface. The unit-cell of MM consists of Silicon (Si) bars on Silicon dioxide (SiO 2 ) sub- strate, in which two bars are directed horizontally and one bar is directed vertically. By changing the relative position and dimension of the Si bars, the EIT effect could be achieved. The optical properties of the proposed MM are investigated numerically using the finite difference method with commercial software Computer Simulation Technology (CST). Then, characteristic parameters of MM exhibiting EIT effect (EIT-MM), including Q-factor, group delay, are calculated to evaluate the applicability of EIT-MM to sensing and light confinement. Keywords: all-dielectric metamaterial, electromagnetically-induced transparency, optical region. Classification numbers: 81.05.Xj; 78.67.Pt. ©2020 Vietnam Academy of Science and Technology