Long period gratings as solution concentration sensors
暂无分享,去创建一个
Abstract The on-line concentration measurement of solutions is of great interest in many industrial processes as a means of quality production control, in order to measure concentrations of harmful solutions or solutions that cannot be reached by the operator. An optical fiber long-period grating (LPG), tested for the refractometry of sodium chloride, calcium chloride and ethylene glycol aqueous solutions, is presented. Resolution values comparable to or even better than those offered by an Abbe refractometer, that is typically used in these types of measurements, are obtained.
[1] A. Vengsarkar,et al. Optical fiber long-period grating sensors. , 1996, Optics letters.
[2] Anna Grazia Mignani,et al. Solution concentration measurements by means of optical fiber long-period gratings , 1998, Optical Fibre Sensors.
[3] S. B. Lee,et al. Displacements of the resonant peaks of a long-period fiber grating induced by a change of ambient refractive index. , 1997, Optics letters.
[4] Alan D. Kersey,et al. Analysis of the response of long period fiber gratings to external index of refraction , 1998 .