A new kind of sensing technology – optical fiber sensor based on modal interference

Abstract

With the development of automation and intelligentize, sensor technology has been paid more and more attention to by scientific and technical researchers all over the world. In the numerous kinds of sensors, the optical fiber sensing technology represents the development trend of the new generation of the sensor and becomes one of the most developing hightech industries due to the properties of high temperature resistance, high sensitivity, fast response, anti-electromagnetic interference, corrosion resistance, flameproof and so on. And the optical fiber sensor based on modal interference is a hot topic in recent years because it has the unique merits of simple structure, low cost and anti-disturbance. In this paper, the research background, basic sensing principle and developing trend of the optical fiber sensor based on modal interference has been introduced.