In this paper, we propose signal-processing tools adapted to supercontinuum absorption spectroscopy, in order to predict the precision of gas species concentration estimation. These tools are based on Cramer–Rao bounds computations. A baseline-insensitive concentration estimation algorithm is proposed. These calculations are validated by statistical tests on simulated supercontinuum signals as well as experimental data using a near-infrared supercontinuum laser and a grating spectrometer.
© 2012 Optical Society of America
Original Manuscript: September 21, 2012
Revised Manuscript: November 16, 2012
Manuscript Accepted: November 16, 2012
Published: December 10, 2012
Alexandre Dobroc and Nicolas Cézard, "Performance assessment and signal processing for range-integrated concentration measurement of gas species using supercontinuum absorption spectroscopy," Appl. Opt. 51, 8470-8480 (2012)