Abstract
In this paper, a two transmission window plasmonically-induced transparency (PIT) with hybrid coupling mechanism has been numerically demonstrated. The hybrid coupling mechanism is composed of a bright mode (square ring), bright mode (SRR), and a dark mode (cut wire). Bright-dark coupling is one of the coupling ways; another two of the coupling ways are bright-bright coupling. Only three modes are needed to obtain two transmission window PIT, which can lead to miniaturization of the meta-atom of PIT. In addition, SRR is embedded in a square ring by using an ingenious design, which further leads to miniaturization of the meta-atom of PIT. The miniaturized PIT can enrich PIT research and has potential applications in slow light devices.
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