A novel fiber-optic temperature sensor based on high temperature-dependent optical properties of ZnO film on sapphire fiber-ending

作者：Cai, Pinggen; Zhen, Dong; Xu, Xiaojun; Liu, Yulin; Chen, Naibo; Wei, Gaorao; Sui, Chenghua^*

来源：Materials Science and Engineering B-Solid State Materials for Advanced Technology, 2010, 171(1-3): 116-119.

DOI：10.1016/j.mseb.2010.03.083

• ZnO thin film
• Optical absorption spectra
• Fiber-optic sensor

We report the growth of high-quality thin films of ZnO via an electron-beam evaporation technique. Studies of the transmittance spectra have revealed a sharp optical absorption edge and a significant redshift. After annealing at 673 K, the ZnO films again demonstrated a sharp absorption edge in a manner similar to the as-deposited samples. This illustrates the excellent thermal stability of the thin films and, as such, demonstrates their potential as fiber-optic temperature sensors. Utilizing the influence of optical absorption spectra at different temperatures, a novel fiber-optic temperature sensor based on this material has been designed and tested. This technique could offer a simple, robust and cost-effective method to be used in high temperature sensing applications.

• 出版日期2010-7-25
• 单位浙江工业大学