Table 4.
Summary of multipurpose sensing for PCF and advanced optical fiber sensor
| Structure | Parameter | Sensitivity | Refs. |
|---|---|---|---|
|
PCF + SMF Tip interferometer by PCF spliced with SMF |
Temperature | 10 pm/°C | [148] |
|
PCF + FP + SMF PCF-based Fabry–Perot interferometer, which includes an inline micro-cavity and is spliced with SMF |
Temperature | 12 pm/°C | [149] |
|
PCF + SPR Plasma resonance-based gold nanowire liquid crystal PCF |
Temperature | 10 nm/°C | [150] |
|
PCF + Isopropanol Isopropanol filled PCF long period grating |
Temperature | 1.356 nm/°C | [151] |
|
PCF + long period gratings The combination of periodically tapered long period grating and PCF |
Pressure/Strain |
11.2 pm/bar/ -7.6 pm/με |
[152, 153] |
|
PCF + FBG High birefringence microstructure fiber based on Bragg grating |
Pressure | 33 pm/Mpa | [154] |
|
PCF + Fe3O4 Fe3O4 nanofluid filling |
Electromagnetic field | 242 pm/mT | [147] |
|
PCF + FP + CdFe2O4 CdFe2O4 as a magnetic fluid |
Electromagnetic field | 33 pm/Oe | [155] |
|
PCF + SMF + Water-based ferromagnetic fluid Water-based ferromagnetic fluid EMG507 |
Electromagnetic field | 16.04 pm/G | [156] |
|
PCF + SPR Gold layer filled SPR |
Electromagnetic field | − | [157] |
| Multi core flat optical fiber based on SPR | Refractive index | 23,000 nm/RIU | [158] |
|
PCF + Long Period Grating Surface long-period gratings incorporated D-shaped PCF |
Refractive index | 585.3 nm/RIU | [159] |
| PCF + filled analyte under test | Refractive index | 2 × 10−6 RIU | [160] |