The theoretical analysis of the deflection of an isotropic beam
subjected to out of plane loading is well documented in standard
mechanics text [15] and the analysis shows that the in-plane
strain, the curvature and the central deflection of the beam are
proportionally related to each other. Therefore, if the response of
the POF sensor varies linearly with the central deflection (direct
measurement obtained from the experiment), the sensor, in principle,
can be used to provide a direct measure of the beam deflection
due to applied force.