FIG 2 (IMAGE) Compuscript Ltd Caption Fig. 2 | a) (left) Relationship between optical power and bending radius of POF sensor in bending tests. (right) Optical power-pressure curves of POF sensors in indentation tests. b) Example of a 10-s long comparison between a processed signal and a reference signal. c) (left) Human pulse signal diagram acquired under the optimal method; (right) Detail within 10 s. Credit OES Usage Restrictions Credit must be given to the creator. License CC BY Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.