| OFS | optical fiber sensors |
| VOCs | volatile organic compounds |
| MOFs | microstructured optical fibers |
| PCFs | photonic crystal fibers |
| SC-PCFs | solid core PCFs |
| HC-PCFs | hollow core PCFs |
| TIR | total internal reflection |
| PBG | photonic band gap |
| SSCs | suspended core fibers |
| MZ | Mach–Zehnder |
| FP | Fabry–Pérot |
| SMF | single-mode fiber |
| MMF | multi-mode fiber |
| mPOFs | microstructured polymer optical fiber |
| GVD | group velocity dispersion |
| LOD | limit of detection |
| ITO | indium tin oxide |
| SnO2 | tin dioxide |
| PAH | poly(allylamine hydrochloride) |
| PAA | poly(acrylic acid) |
| Ppm/ppb/ppt | parts per millon/billion/trillion |
| FEM | finite element method |
| SPR | surface plasmon resonance |
| LbL | layer-by-layer nanoassembly |
| Al2O3 | alumina |
| PSS | poly(sodium-p-styrenesulfonate) |
| PVA | polyvinyl alcohol |
| THF | tetrahydrofuran |
| FFT | fast fourier transform |
| OA | optical adhesive |
| FBGs | fiber bragg gratings |
| LPGs | long period grattings |
| GQDs | graphene quantum dots |
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