Fluorescence intensity ratio technique for Sm3+ doped calibo glass

The most promising fluorescence based temperature sensing technique has been employed. The effect of variation of the temperature on the fluorescence intensity of the two bands, specially coming from the two closed levels to a common lower level in Sm3+ doped calibo glass monitored using 476.5 nm line of Ar+ laser and inferred that the present system can be used as a temperature sensor.