Abstract
A method of measuring the refractive index of liquid based on the change of speckle contrast in fiber is presented. The correlation of propagation losses, proportional to the speckle contrast, is used when a section of U-shaped fiber without cladding is submerged in the liquid. The proposed method is easy to perform, simple and low cost, allows quick measurements, with good accuracy and in a large dynamic range.
© 2020 The Author(s)
PDF ArticleMore Like This
G. Gobi and D. Sastikumar
FThG6 Frontiers in Optics (FiO) 2007
M. Esakkimuthuraju, Ashwin Kumar Kuchibhotla, Kumar Ravi, Badrinath Vadakkapattu Canthadai, and Vengalrao Pachava
JW2A.41 Frontiers in Optics (FiO) 2015
Monserrat del Carmen Alonso Murias, Jesús Salvador Velázquez-González, and David Monzón-Hernández
TuE79 Optical Fiber Sensors (OFS) 2018