Table 6.

Summary of photonic crystal fibre plasmonic sensors.

PCF Fibre Description	Coating (nm)	Sensitivity nm/RIU	Wavelength (nm)	Resolution RIU−1	Index Range	Reference
Irregular cross-section with core and adjacent hole	Au, 30 to 50	11 × 103	770–1070	9.1 × 10−6	1.33–1.41	[97]
Multimode Micro fibre, Two bare sections and circular PCF	Au, 50 and Graphene	4649	400–1000	1 × 10−5	1.33–1.37	[98]
Horse-shoe shaped PCF	Ag, 30–40 and graphene	2290	500–700	5 × 10−5	1.33–1.3688	[99]
D-shaped Endless Single Mode PCF	Au 45	7381	560–660	5 × 10−5	1.40–1.42	[100]
D-shaped Endless Single Mode PCF	Au 45	2336	560–660	6.5 × 10−5	1.33–1.37	[101]