SIMULTANEOUS MEASUREMENT OF STRAIN AND TEMPERATURE - ERROR ANALYSIS

Many optical fiber sensors designed to recover quasi-static strain fie lds in the presence of significant temperature changes have been repor ted in recent years, A general theoretical analysis of the influence o f systematic errors associated with the measurement process is present ed and applied to a range of techniques that are of current interest i n the literature. The performances of measurement methods based on Bra gg grating sensors, polarization-maintaining Fabry-Perot interferomete rs, combined dual-mode interference/polarimetry sensors, and dispersiv e Fourier transform spectroscopy measurements are contrasted with resp ect to the influence of measurement error, calibration error, cross ta lk, and engineering practicality, (C) 1997 Society ai Photo-Optical In strumentation Engineers.