A novel fiber grating pressure sensor with high sensitivity is reported,the elastic sheet packaging technique is presented,the principles are analyzed theoretically and the packaging detector is made.The measurement results show that the pressure sensitivity of fiber grating with packaging is 33.6 nm/MPa,which is 10 700 times of that without packaging,and the measured sensitivity of liquid level measrement is 3.36 pm/cm.The results show that the proposed sensor can satisfy pressure measurement r...