Measurements of thermo-optic coefficient of standard single mode fiber under large temperature range

摘要

The thermo-optic coefficient of standard single mode fiber (SMF) is researched in the temperature range from 20 to 1000 °C by using a fiber-optic intrinsic Fabry-Perot interferometer. Polynomial fit of the interference fringe shift indicates that the thermo-optic coefficient increases with temperature, and is estimated to reach its peak at ～1144 °C. The error of the temperature measurements is also analyzed when taking the thermo-optic coefficient value as a constant.