利用时域有限差分法对由闭合方环（SCL）和开口谐振环（SRR）组合构成的平面太赫兹谐振器实现的类电磁诱导透明（EIT）效应及其折射率传感器进行了仿真分析。结果表明，该类EIT谐振峰对周围环境介质折射率变化具有很高的灵敏度，且其FOM(Figure of merit)值达到4.06，优于独立SCL或SRR结构传感器的0.09和2.48。利用激光诱导技术与化学镀铜技术在聚酰亚胺薄膜上加工了谐振器样品，并对其进行了透射性能测试，测试结果与仿真计算基本一致。

The analogue of electromagnetically induced transparency (EIT) is achieved in a planar terahertz resonator consisting of a square closed loop (SCL) and a split ring resonator (SRR). Finite difference time domain simulations are carried out to analyze the EIT-like effect and its potential applications as a refractive-index-based sensor. Results show that the EIT-like resonance exhibits high refractive-index sensitivity and a high figure of merit (FOM) of 4.06, higher than that for SCL (0.09) or SRR (2.48) resonators. The refractive index and dielectric loss of the substrate, which influence the sensing performance of the SCL/SRR resonator, are studied, too. A device of the SCL/SRR resonator is fabricated by using laser-induced and chemical non-electrolytic plating with copper on polyimide film. Test results conincide with simulations.