Strain and temperature characteristics of distributed optical fiber sensor

초록

In this paper, to reveal the mechanical characteristics of the distributed sensor system the temperature and strain sensitivities of the optical fiber were separately measured using developed Brillouin scattering sensor system. The center frequency shift of the Brillouin gain spectrum as a function of temperature and strain was acquired by a computer controlled data acquisition system. The sensitivities of the optical fiber were calculated with the linear fit. The temperature measurement from the optical fiber followed the thermocouple values. The thermocouple was placed on the surface of the specimen.