An eight-channel fiber-optic Bragg grating and stimulated Brillouin sensor system for simultaneous temperature and strain measurements

An eight channel fiber-optic sensor has been developed to simultaneously measure the strain and temperature independently using fiber Bragg gratings and stimulated Brillouin scattering. The temperature and strain resolution is approximately 1.5/spl deg/C and 20 μ/spl epsiv/, and the spatial resolution for sensing Brillouin scattering is 5 m.