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. 2018 Aug 22;18(9):2757. doi: 10.3390/s18092757

Figure 4.

Figure 4

Phase profiles of Ex in rad for (a) LRSPP mode labelled ‘A’ in Figure 3b: n0sinθ0 = 1.4156, n1 = 1.34 with d1 = 360 nm, n2 = 0.18344 + 3.4332i with d2 = 60 nm and n3 = 1.34 and (b) SRSPP mode labelled ‘B’ in Figure 3b: n0sinθ0= 1.513, n1 = 1.34 with d1 = 175 nm, n2 = 0.18344 + 3.4332i with d2 = 60 nm and n3 = 1.34.