Development of flexible pressure sensing polymer foils based on embedded fibre Bragg grating sensors

This paper reports on the development of flexible polymer sensing foils based on embedded fibre Bragg grating (FBG) sensors. The foil consists of quasi-distributed sensing points with FBGs inscribed in highly birefringent photonic crystal fibres (PCF). A local pressure sensitivity of 9.08 pm/kPa and a pressure resolution of 0.11 kPa were achieved at sensing points.