Table 4 A comparative analysis between the introduced sensor and recently published PCF sensors operating in the Terahertz (THz) spectrum.
From: Highly precise optical detection of mass destruction nerve agents based on photonic crystal fibers
Ref | Lattice type | Detection target | Operating frequency (THz) | Background Material | Effective area (m2) | Relative Sensitivity (%) | Birefringence | Confinement loss (dB/m) | EML (cm−1) | Numerical aperture |
|---|---|---|---|---|---|---|---|---|---|---|
2020 | Hollow Core (Rectangular) | Sarin, Soman and Tabun | 1–2 | Zeonex | ـــــ | 94.4 | 0.00682 | 1.71 × 10−14 cm−1 | 0.00859 | ـــــ |
2023 | Circular Core | Sarin, Soman and Tabun | 0.6–1.8 | Zeonex | ـــــ | 94 | ـــــ | 10−14 dB/m | ـــــ | ـــــ |
2021 | Rectangular Core | Sarin, Soman and Tabun | 1–3 | Topas | 1.640 × 105 µm2 | 96.12 | ـــــ | 3.58 × 10−13 cm−1 | 0.0097 | ـــــ |
2023 | Hollow Core (Circular) | Urine | 1.5–5 | Topas | 5.06 × 10−8 | 98.5 | ـــــ | 10−16 cm−1 | 0.0173 | ـــــ |
2022 | Hollow Core (Square) | Chloropicrin, Ethyl-bromide | 1.2 | polymer Zeonex | 1.56 × 105 µm2 | 94.6 | ـــــ | 8.34 × 10–13 cm−1 | 0.007 | 0.2203 |
2023 | Square Core | Petrochemicals | 1.2–3.8 | Zeonex | 90,600 µm2 | 97 | ـــــ | 1.32 × 10−14 cm−1 | 0.0105 | ـــــ |
2022 | Circular Hollow Core | Water | 0.5–1.5 | Fused silica, BK7 glass | 8.1 × 105 µm2 | 92 | ـــــ | 8.2 × 10−16 cm−1 | 2.4 × 10−4 | ـــــ |
2022 | Rectangular Core | Milk | 1–3 | Zeonex | 18,7870 µm2 | 94.75 | 0.0044 | ـــــ | 0.00799 | ـــــ |
2024 | Hollow Rectangular Core | Amino acids | 1.5–3.5 | Zeonex | 1.41 × 105 µm2 | 99.18 | ـــــ | 1.04 × 10–14 cm−1 | 0.0063 | 0.1353 |
2021 | Hexahedron Core | Ethanol, Benzene, and Water | 1–3 | Zeonex | 1.32 × 10−7 | 88.36 | ـــــ | 5.55 × 10–08 | 0.00699 | ـــــ |
Prop. sensor | Elliptical cladding with Circular Core | Sarin, Soman and Tabun | 1.6–3.6 | Silica | 1.55 × 10−8 | 99.6 | 1.83 × 10−4 | 3.6 × 10⁻13 | 4.5 × 10−4 | 0.507 − 0.327 |
