Multiple Fano resonances in metal–insulator–metal waveguide with umbrella resonator coupled with metal baffle for refractive index sensing
Qi Yun-Ping1, 3, †, Wang Li-Yuan1, Zhang Yu1, Zhang Ting1, Zhang Bao-He1, Deng Xiang-Yu1, Wang Xiang-Xian2
       

Transmission spectra of MIM structure changing (a) with coupling distance g using FEM simulation, (b) with thickness of metal baffle t obtained from FEM simulation.