1 x N star coupler as a distributed fiber-optic strain sensor in a white-light interferometer

摘要

A novel technique of using a 1 x N star fiber optic coupler as a distributed strain sensor in a white-light interferometer to measure the distribution of strain is presented. The measuring principle and 1 x 4 star coupler with four fiber optic strain sensors are demonstrated. The experiment is performed with four sensors attached to a combination plastic specimen. (C) 1998 Optical Society of America. [References: 14]