Qi Wang, Hui Zou, Wei Wei. Strain and Refractive Index Sensor Based on Core-Offset Splicing Fibers[J]. Acta Optica Sinica, 2017, 37(10): 1006005
- Acta Optica Sinica
- Vol. 37, Issue 10, 1006005 (2017)
Fig. 1. Structure of optical fiber sensor and optical signal transmission(offset: dco=6 μm,SMF1 length: L=4 cm)
Fig. 2. Experimental setup for strain and refractive index measurement
Fig. 3. (a) Relationship between extinction ratio and SMF1 core-offset; (b) relationship between free spectral range and 1/L
Fig. 4. Near infrared transmission spectrum of optical fiber sensor (dco=6 μm, L=4 cm)
Fig. 5. (a) Strain transmission spectrum of optical fiber sensor;(b) relationship between interference dips of characteristic wavelength and strain
Fig. 6. (a) Transmission spectra of sensor under different refractive indexes; (b) relationship between interference dips of characteristic wavelength and refractive index
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