@article{articled9be9b99,
title   = {Measurement of the refractive index profile of waveguides using defocusing microscopy},
author = {Lages, Eduardo and Cardoso, Wilder and Almeida, Gustavo Foresto Brito and Siman, Lívia and Mesquita, Oscar and Mendonça, Cleber Renato and Agero, Ubirajara and Sebastião Pádua},
year = {2018},
doi = {10.1364/AO.57.008699},
journal   = {Applied Optics}
}