TY - GEN
T1 - Parametric analysis of electromagnetically induced transparency (EIT) in chiral metamaterials
AU - Kang, Lei
AU - Jiang, Zhi Hao
AU - Yue, Taiwei
AU - Werner, Douglas H.
PY - 2015/10/22
Y1 - 2015/10/22
N2 - In this paper, the handedness dependent electromagnetically induced transparency (EIT) in a chiral metamaterial and its sensitivity to the coupling conditions are presented. A chiral metamaterial, consisting of an array of coupled cut-wire resonators (CWRs) supporting the radiative resonance, exhibits strong chiral responses around 4 GHz when excited by circularly polarized (LCP and RCP) waves. Split ring resonators (SRRs) are designed to support non-radiative resonances at the same frequencies. Through appropriately introducing SRRs into the CWR array, transmission peaks are observed in the EIT chiral system at the frequencies correspond to the stopbands of the CWR chiral metamaterial for both RCP and LCP excitations. Particularly, transmission peaks of -2.3 dB and -1.3 dB are observed around 3.75 GHz and 4.10 GHz, respectively, for RCP and LCP waves, in contrast to the corresponding -13 dB and -9.2 dB handedness dependent transmission dips. The sensitivities of the proposed chiral EIT effect on coupling between SRRs and the CWRs are also studied.
AB - In this paper, the handedness dependent electromagnetically induced transparency (EIT) in a chiral metamaterial and its sensitivity to the coupling conditions are presented. A chiral metamaterial, consisting of an array of coupled cut-wire resonators (CWRs) supporting the radiative resonance, exhibits strong chiral responses around 4 GHz when excited by circularly polarized (LCP and RCP) waves. Split ring resonators (SRRs) are designed to support non-radiative resonances at the same frequencies. Through appropriately introducing SRRs into the CWR array, transmission peaks are observed in the EIT chiral system at the frequencies correspond to the stopbands of the CWR chiral metamaterial for both RCP and LCP excitations. Particularly, transmission peaks of -2.3 dB and -1.3 dB are observed around 3.75 GHz and 4.10 GHz, respectively, for RCP and LCP waves, in contrast to the corresponding -13 dB and -9.2 dB handedness dependent transmission dips. The sensitivities of the proposed chiral EIT effect on coupling between SRRs and the CWRs are also studied.
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U2 - 10.1109/APS.2015.7305100
DO - 10.1109/APS.2015.7305100
M3 - Conference contribution
AN - SCOPUS:84953722451
T3 - IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
SP - 1422
EP - 1423
BT - 2015 IEEE Antennas and Propagation Society International Symposium, APS 2015 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - IEEE Antennas and Propagation Society International Symposium, APS 2015
Y2 - 19 July 2015 through 24 July 2015
ER -