Fig. 1. Test system schematic diagram

Fig. 2. RFPI preparation of schematic diagram

Fig. 3. SFPI preparation of schematic diagram

Fig. 4. Attenuator function simulation

Fig. 5. Experimental system for paralleled FPI sensor

Fig. 6. Tension response of single SFPI

Fig. 7. Response of paralleled FPI sensor to tension

Fig. 8. Vernier envelope stability response

Fig. 9. Temperature test of the sensor

Fig. 10. Simulated wavelength shift of tension response

Fig. 11. Effect of RFPI of different cavity lengths on magnification