Magnetic Plasmon Sensing in Twisted Split-Ring Resonators

Table 1

The FOM for the two hybridized magnetic plasmon modes of the stereo-SRRs metamaterials, and the parameters FWHM. Obviously, when the PR_tran result was used as sensing signal, the sensing performance of the two modes was best.

Eigenmode	FWHM (nm)	FOM
Mode 1 (𝑇𝑥)	50.7	9.1
Mode 2 (𝑇𝑥)	46.3	12.5
Mode 1 (𝑇𝑦)	57.8	8.0
Mode 2 (𝑇𝑦)	54.6	10.6
Mode 1 (PRtran)	33.0	14.0
Mode 2 (PRtran)	26.0	22.3