Figure 2
Performance of the hollow ring. (a) The transmission at r1 = r2 = 60 nm, 80 nm and 100 nm, respectively. (b) the transmission and the phase shift at r1 = r2 = 80 nm. The other parameters are R1 = R2 = 120 nm, h = 8 nm, and p = 330 nm. Lumerical FDTD Solutions; version: 8.23.2305. www.lumerical.com.
