Refractive index sensor based on high-order surface plasmon resonance in gold nanofilm coated photonic crystal fiber
Fan Zhen-Kai1, Fang Shao-Bo2, 3, ‡, Li Shu-Guang4, Wei Zhi-Yi2, 3
       

The electric field distributions of (a) the fundamental mode, (b) the 5th order SPP mode, and (c) the resonance coupled mode of the 5th order SPP mode and the fundamental mode for structure 1. Those of (d) the fundamental mode, (e) the 5th order SPP mode, (f) the SPR modes of the 6th order and the fundamental mode for structure 2.