Two dimensional temperature measurements by X-Y scanning of Er end doped silica fiber sensor

Fiber-optic thermal radiation thermometry was studied using Er end doped silica fiber sensor. Visible light radiation peaks were clearly observed at lambda=522 nm and, 655 nm, 800 nm and 984 nm from Er end doped silica fibers sensor. Theses peaks increase greatly with temperature of the sensor. Intensity ratio of thermally excited luminescence peaks at lambda=522 nm and 984 nm, I_522/984, is suitable for the high temperature measurement. Two dimensional (2-D) temperature distributions in a flame are successfully visualized by X-Y scanning technique using Er end doped silica fiber sensor