Ref.

Structural Model

Analyte RI

Wave. Sens. (nm/RIU)

Wave. Res. (RIU)

Amp. Sens. (RIU⁻¹)

[4]

Silver with Graphene layer

1.33 - 1.37

N/A

N/A

860

[25]

Copper with Graphene layer

1.33 - 1.37

2000

5 × 10⁻⁵

140

[28]

Spiral PCF sensor

1.33 - 1.38

4300

2.17 × 10⁻⁵

420.4

[16]

Dual D shape symmetrical

1.380 - 1.420

4875

2.50 × 10⁻⁵

513

[5]

Gold-coated

1.33 - 1.37

4000

2.5 × 10⁻⁵

320

[27]

Niobium on Al₂O₃

1.36-1.40

8000

1.25 × 10⁻⁵

1560

[26]

D-shaped sensor gold coated

1.33 - 1.38

10,493

9.53 × 10⁻⁶

N/A

Proposed

Slotted structured gold coated

1.30 - 1.44

11,000

9.09 × 10⁻⁶

325.34