Abstract
In this article, we have extensively investigated the efficiency of etched silica-based fiber Bragg gratings (FBGs) for the experimental measurement of temperature and strain simultaneously. A single-multi-single mode fiber (SMS) combination is employed in the circuitry which acts as a bandpass filter for efficient interrogation technique. We recorded the sensitivity of 20.30 pm/°C and 2.89 pm/µɛ over the temperature and strain range of 25–225°C and 50-2050 µɛ, respectively. These data were recorded with the strain resolution of ± 10 µɛ whereas the resolution for the temperature is ± 0.50°C. The experimental results show the potentiality of the sensor for measuring the strain and temperature simultaneously with higher intrinsic sensitivity and resolution.
Strong Bragg gratings in phosphate glass single mode fiber
