Table 1.

Comparison of performance of fiber sensors with different configurations for micro-force measurements

Sensor structure	Size of sensor	Force sensitivity (pm μN-1)	Reference
Photonic crystal fiber	125 μm × 3 cm	0.016 × 10−3	54
Microfiber Bragg grating	2.4 mm × 2.4 mm	0.73 × 10−3	55
FP cuboid cavity	18 μm × 60 μm	0.026	56
Microfiber asymmetrical FP interferometer	20 mm × 7.3 um	0.221	57
FP micro-cavity plugged by cantilever taper	1.36 mm × 125 μm	0.842	58
Balloon-like interferometer	24 mm × 14 μm	24.9	15
Clamped beam probe	68 μm × 100 μm	1510	This work