Environmental considerations for fiber optic remote sensing systems in on-line process monitoring

Richard D. Driver; James N. Downing; M. L. Brubaker; John D. Stark; Lubos J. B. Vacha; Tracey L. Wilbourn

doi:10.1117/12.137742

14 August 1992 Environmental considerations for fiber optic remote sensing systems in on-line process monitoring

Richard D. Driver, James N. Downing, M. L. Brubaker, John D. Stark, Lubos J. B. Vacha, Tracey L. Wilbourn

Proceedings Volume 1681, Optically Based Methods for Process Analysis; (1992) https://doi.org/10.1117/12.137742
Event: SPIE's 1992 Symposium on Process Control and Monitoring, 1992, Somerset, NJ, United States

Abstract

Remote spectroscopic sensing in the infrared places tight constraints on measurement system stability and analog signal integrity. The stability of each component of the system needs to be considered, including detectors, electronics, fiber cables, spectrometer, optical components and light sources. A full discussion of the signal-to-noise limit of a fiber remote systems is given. The parameters affecting the ability of the system to be used for long term process sensing are reviewed. Environmental data is presented on the optical throughput stability of infrared fiber optics, fiber-optic cables and sensors with changing temperature. The effect of water and vibration on bare and protected infrared fibers is discussed. The measurement stability of each component of a FT-IR remote fiber-optic system is related to the final measurement stability of the complete system. It is shown that, within certain environmental limits, the signal-to-noise limit of the measurement may be realized with careful system configuration and calibration.

Citation Download Citation

Richard D. Driver, James N. Downing, M. L. Brubaker, John D. Stark, Lubos J. B. Vacha, and Tracey L. Wilbourn "Environmental considerations for fiber optic remote sensing systems in on-line process monitoring", Proc. SPIE 1681, Optically Based Methods for Process Analysis, (14 August 1992); https://doi.org/10.1117/12.137742

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