Fiber optic array sensors as an architecture for an artificial nose

David R. Walt; Todd A. Dickinson; Brian G. Healey; John S. Kauer; Joel White

doi:10.1117/12.221724

29 September 1995 Fiber optic array sensors as an architecture for an artificial nose

David R. Walt, Todd A. Dickinson, Brian G. Healey, John S. Kauer, Joel White

Proceedings Volume 2508, Chemical, Biochemical, and Environmental Fiber Sensors VII; (1995) https://doi.org/10.1117/12.221724
Event: European Symposium on Optics for Environmental and Public Safety, 1995, Munich, Germany

Abstract

Imaging optical fibers can be used in conjunction with 2D detectors such as CCD cameras to fabricate array sensors. These sensors contain spatially separated photopolymers containing analyte-sensitive fluorescent indicators on an imaging fiber tip. Spatial resolution of the indicators is maintained through the imaging fiber array and projected onto a CCD detector. Sensors have been fabricated using the conventional one analyte-one sensor paradigm. This approach has resulted in multianalyte sensors for blood gases, process control parameters, and environmental contaminants. An entirely different approach is also being taken. Sensing sites containing cross-reactive indicator regions are deposited on the end of the imaging fiber. The resulting array is then challenged with a variety of analytes. Pattern recognition algorithms are employed to train a neural network. The resulting sensor array can identify subsequent challenges with the analyte even after extended use.

Citation Download Citation

David R. Walt, Todd A. Dickinson, Brian G. Healey, John S. Kauer, and Joel White "Fiber optic array sensors as an architecture for an artificial nose", Proc. SPIE 2508, Chemical, Biochemical, and Environmental Fiber Sensors VII, (29 September 1995); https://doi.org/10.1117/12.221724

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