Zhan Tan, Changrui Liao, Shen Liu, Maoxiang Hou, Zhe Zhang, Kuikui Guo, Yiping Wang. Simultaneous Measurement Sensors of Temperature and Strain Based on Hollow Core Fiber and Fiber Bragg Grating[J]. Acta Optica Sinica, 2018, 38(12): 1206007
- Acta Optica Sinica
- Vol. 38, Issue 12, 1206007 (2018)
Fig. 1. Schematic of HCF. (a) End facet; (b) light guiding mechanism; (c) anti-resonant waveguide transmission; (d) transmission spectrum of anti-resonant waveguide
Fig. 2. Structural diagram of proposed fiber sensor
Fig. 3. Transmission spectrum of SMF-HCF-SMF structure
Fig. 4. Experimental device for UV femtosecond laser inscription of FBG by phase mask
Fig. 5. Transmission spectrum of cascaded HCF and FBG
Fig. 6. Characteristics of temperature response. (a) Transmission spectrum of HCF-FBG sensor during temperature increases; (b) resonance wavelength of HCF or FBG versus temperature
Fig. 7. Device for strain measurement
Fig. 8. Characteristics of strain response. (a) Evolution of transmission spectrum of HCF-FBG sensor during axial strain increases; (b) resonance wavelength of HCF or FBG versus strain
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