Wide Range Fiber Displacement Sensor Based on Bending Loss

Table 1

Specification of the fibers used in tests.

Item	Unit	SMF-28e	SK10/SK20
∅ core	μm	10	250/500
∅ cladding	μm	125	250/500
Max transmission loss	dB/km	0.35 (at 1310 nm)	300/180 (at 650 nm)
Max operating temperature	°C	85 Max	70 Max