title: Diffraction grating-based sensing optofluidic device for measuring the refractive index of liquids.
abstract: We describe a simple and versatile optical sensing device for measuring refractive index of liquids. The sensor consists of a sinusoidal relief grating in a glass cell. Device calibration is done by pouring in the cell different liquids of known refractive indices. Each time a liquid is poured first order intensity is measured. The fabrication process and testing of the prototype device is described. An application in the measurement of temperature is also presented.
authors.forename: Sergio
authors.initials: S
authors.lastname: Calixto
authors.forename: Neil C
authors.initials: NC
authors.lastname: Bruce
authors.forename: Martha
authors.initials: M
authors.lastname: Rosete-Aguilar