Fig. 1. The experimental setup of the temperature and strain sensing

Fig. 2. The reflection spectrum of FMF-FBG

Fig. 3. The central wavelength versus temperature in LP₀₂, LP₂₁, LP₁₁ and LP₀₁ modes

Fig. 4. The central wavelength versus strain in LP₀₂, LP₂₁, LP₁₁ and LP₀₁ modes

Fig. 5. The optical power versus temperature in LP₀₂, LP₂₁, LP₁₁ and LP₀₁ modes

Fig. 6. The optical power versus strain in LP₀₂, LP₂₁, LP₁₁ and LP₀₁ modes

Fig. 7. The optical power versus strain of LP₀₁ mode at different temperatures

Fig. 8. The response of reflected optical power to simultaneous changes in temperature and strain