Noncontact Optical Fiber Sensor for Measuring the Refractive Index of Liquids. - Romeo Selvas-Aguilar; Arturo Castillo-Guzmán; Luis Cortez-Gonzalez; Daniel Toral-Acosta; Alejandro Martínez-Ríos; Gilberto Anzueto-Sanchez; Victor M. Duran-Ramirez; Samuel Arroyo-Rivera (J. Sensors, 2016)