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Proceedings Paper

Interferometric radiometer for continuous multicomponent monitoring
Author(s): James R. Engel; James J. Connolly
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Paper Abstract

An optical monitoring technique that will produce an accurate qualitative measurement of simple multi-component optical spectra with a single direct measurement of interferogram phase is described. The analysis of absorption, emission or transmission spectra has proven to be a powerful tool for detecting chemical constituents in gaseous or liquid process streams. The pre-eminent instrument for this is the Fourier transform spectrometer (FTS); however, the high cost and relative fragility of these systems has prevented their widespread incorporation into chemical systems characterization. Using interferometric techniques similar to those used in FTS, but in a dramatically simplified embodiment, this system may provide the wavelength specificity and sensitivity of an FTS, with the low cost and ruggedness of a simple filter radiometer.

Paper Details

Date Published: 19 January 1995
PDF: 12 pages
Proc. SPIE 2367, Optical Sensors for Environmental and Chemical Process Monitoring, (19 January 1995); doi: 10.1117/12.199661
Show Author Affiliations
James R. Engel, OPTRA, Inc. (United States)
James J. Connolly, OPTRA, Inc. (United States)

Published in SPIE Proceedings Vol. 2367:
Optical Sensors for Environmental and Chemical Process Monitoring
Ishwar D. Aggarwal; Stuart Farquharson; Eric Koglin, Editor(s)

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