Strain measurement based on SMS fiber structure sensor and OTDR

This article presents a strain measurement method using a singlemode-multimode-singlemode fiber structure sensor and an optical time domain reflectometer. A strain measurement range of 0-1000 epsilon can be achieved with a resolution of better than 10 epsilon. Using this method, a quasi-distributed strain measurement can be carried out which is useful for a bridge or a civil structure strain monitoring. (c) 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2576-2578, 2013