Bragg grating in a polymer optical fibre for strain, bend and temperature sensing.

We report on a Bragg grating written in an eccentric-cored polymer optical fibre for measurement of strain, bend and temperature. The strain sensitivity achieves 1.13 pm me[?]1. The temperature response shows a negative sign with the thermal sensitivity of [?]50.1 pm degC[?]1. For bend sensing, this device exhibits a strong fibre orientational dependence, wide bend curvature range of +-22.7 m[?]1 and a high bend sensitivity of 63.3 pm/m[?]1. [ABSTRACT FROM AUTHOR]