1,862
Views
1
CrossRef citations to date
0
Altmetric
Articles

All fiber Mach–Zehnder interferometer for simultaneous measurement of temperature and refractive index

, &

Figures & data

Figure 1. Diagram of sensor structure.

Figure 1. Diagram of sensor structure.

Figure 2. Cross section and refractive index distribution of FMF.

Figure 2. Cross section and refractive index distribution of FMF.

Figure 3. Simulate the distribution of light field intensity and display it on the X-Z plane, and the normalized power of LP01 in the core: (a) SMF-FMF-SMF, (b) SMF-CLF-FMF-CLF-SMF. (X (µm): Fiber diameter; Monitor Value (a. u.): Normalized power; Z (µm): Optical transmission direction).

Figure 3. Simulate the distribution of light field intensity and display it on the X-Z plane, and the normalized power of LP01 in the core: (a) SMF-FMF-SMF, (b) SMF-CLF-FMF-CLF-SMF. (X (µm): Fiber diameter; Monitor Value (a. u.): Normalized power; Z (µm): Optical transmission direction).

Figure 4. The normalized optical power of LP01 mode in optical fiber sensing structures with different length of CLF.

Figure 4. The normalized optical power of LP01 mode in optical fiber sensing structures with different length of CLF.

Figure 5. The mode effective index of the guided modes supported in the FMF.

Figure 5. The mode effective index of the guided modes supported in the FMF.

Figure 6. Encapsulated sensor.

Figure 6. Encapsulated sensor.

Figure 7. Schematic diagram of experimental system.

Figure 7. Schematic diagram of experimental system.

Figure 8. Photo of experimental system.

Figure 8. Photo of experimental system.

Figure 9. Transmission spectra at different temperatures.

Figure 9. Transmission spectra at different temperatures.

Figure 10. Spatial spectral analysis.

Figure 10. Spatial spectral analysis.

Figure 11. Repeatability error of dips in the process of temperature change.

Figure 11. Repeatability error of dips in the process of temperature change.

Figure 12. Relationships between temperature and wavelength.

Figure 12. Relationships between temperature and wavelength.

Figure 13. Transmission spectra at different RIs.

Figure 13. Transmission spectra at different RIs.

Figure 14. Repeatability error of dips in the process of RI change.

Figure 14. Repeatability error of dips in the process of RI change.

Figure 15. Relationships between RI and wavelength.

Figure 15. Relationships between RI and wavelength.