Maxime Cavillon

May 21, 2024 | opg.optica.org | Maxime Cavillon |John M. Ballato |Thomas Hawkins |Miranda P. Stone

An all-glass optical fiber capable of two distinct methods of opticalthermometry is described. Specifically, a silica-clad, bariumfluorosilicate glass core fiber, when pumped in the infrared, exhibitsvisibly intense green defect luminescence whose intensity andupper-state lifetime are strong functions of temperature. Intensity-based optical thermometry over the range from 25°C to 130°Cis demonstrated, while a lifetime-based temperature sensitivity isshown from 25°C to 100°C.