Table 1 Modal surface and bulk sensitivities of the structures.
Structure | Optical mode | Surface sensitivity [RIU] | Surface sensitivity Δλ/dbio | Bulk sensitivity [nm/RIU] |
|---|---|---|---|---|
Periodic hologram Λ = 350 nm | Leaky λ = 510 nm | 0.033 | 0.102 | 30.129 |
Waveguide λ = 620 nm | 0.043 | 0.079 | 23.21 | |
Biperiodic hologram Λ = 4500 nm | Waveguide λ = 763 nm | 0.028 | 0.12 | 35.5 |
Waveguide λ = 835 nm | 0.024 | 0.139 | 41.3 |
