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Multi-hydrogenated compounds monitoring in optical fibre manufacturing process by photoacoustic spectroscopy

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Abstract

Sub-ppm hydrogen chloride (HCl) and water vapour (H2O) monitoring using photoacoustic spectroscopy in optical fibre manufacturing is reported. The development and performance of a sensor based on an acoustic resonant configuration is described, and on-site measurements are presented. Two DFB lasers emitting in the 1370 nm and 1740 nm range were used for the detection of H2O and HCl, respectively. A detection limit (defined for a SNR=3) of 60 ppb for HCl and 40 ppb for H2O was achieved. Contamination sources of the carrier gas used for the fibre preform manufacturing are identified and discussed.

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Correspondence to J.-P. Besson.

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42.62.Fi; 43.35.Ud

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Besson, JP., Schilt, S., Sauser, F. et al. Multi-hydrogenated compounds monitoring in optical fibre manufacturing process by photoacoustic spectroscopy. Appl. Phys. B 85, 343–348 (2006). https://doi.org/10.1007/s00340-006-2361-4

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  • DOI: https://doi.org/10.1007/s00340-006-2361-4

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