A fiber-optic temperature sensor with a thermo-reversible compound as a transducer

In this article, thermo-reversible compounds have been applied as a transducer in a fiber-optic temperature sensor and the dependence of the reflected optical power on the temperature has been investigated. The reflected optical power indicated a monotonous change in the temperature range of observation, corresponding to an 1.4 dB increase in the optical power when the temperature increased from 20 to 125°C. The temperature dependence of the optical properties was found to be reversible, which indicates that the temperature transducer is reversible as well.