Investigation of rectangular solid-core photonic crystal fiber as temperature sensor

In this article, a rectangular solid-core photonic crystal fiber (PCF) is proposed as temperature sensor. The air-holes of the PCF have been filled with Ethyl alcohol analyte. The full vector finite element method with perfectly matched layer PML is used to investigate the sensing properties. The proposed sensor is working based on changing of analyte refractive index with temperature. The simulated result shows that the confinement loss decreases from 9.505 to 0.698 dB/km as temperature of analyte increases from 20 to 120 degrees C at 1.5 mu m for PCF of air-holes diameter 2.8 mu m and pitch 3 mu m. Moreover, this work presents a theoretical interpretation of controlling light within filled PCF by varying temperature.

Automated summary

This study proposes a method using solid-core photonic crystal fiber as a temperature sensor, by filling the air-holes and changing the temperature to alter the refractive index of the analyte. The research results show that under certain conditions, as the temperature increases, the confinement loss gradually decreases.