Fourier Transform White-Light Interferometry for the Measurement of Fiber-Optic Extrinsic Fabry–PÉrot Interferometric Sensors

摘要

A Fourier transform white-light interferometry for the absolute measurement of fiber-optic extrinsic Fabry–PÉrot interferometric sensors is presented. The continuous test shows the variation is $pm$0.3 $mu$m when measuring a cavity length of 2300 $mu$m. By combining with an average calculation, the variation of the measured results is only $pm$10 nm.