Table 2.

Comparative study of the performance with existing PCFs as RI sensor for plasmonic material Au.

Refs		Range	AS (RIU−1)	Amplitude Resolution (RIU)	WS (nm/RIU)	Wavelength Resolution (RIU)	Figure of Merit (FOM)
[42]		1.32–1.41	1170		34,000		310
[50]		1.413–1.415	1266.67		50,000	4.00 × 10−4	–
[51]		1.385–1.40			10,000	2.00 × 10−5	–
[52]		1.33–1.42	4358.09	2.29 × 10−6	21,000	4.76 × 10−6	729
[53]		1.35–1.41	4738.9	2.11 × 10−6	14,500	6.90 × 10−6	387
[25]		1.40–1.44	1739.26	5.75 × 10−6	9600	1.04 × 10−5	–
[1]	x pol	1.33–1.38	371.5	2.69 × 10−5	4300	2.32 × 10−5	–
	y pol		420.4	2.37 × 10−5	4600	2.17 × 10−5	–
This paper	x pol	1.32–1.42	5269	2.65 × 10−6	36,500	2.74 × 10−6	744
	y pol		5336	3.81 × 10−6	40,500	2.47 × 10−6	773