Reversible and Selective Fiber Optic Hydrazine Vapor Detector. Phase 1
Final rept. 2 Mar-15 Sep 95
ELTRON RESEARCH INC BOULDER CO
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The project objective was directed towards development and subsequent commercialization, for dual use applications, of a distributed multisite fiber optic chemical sensor technology for achieving the real time monitoring of unsymmetrical dimethylhydrazine UDMH and its congeners, monomethylhydrazine MME and hydrazine H down to the 10 ppb concentration level. Selective detection of hydrazines was performed by monitoring absorbance changes via evanescent wave interaction at the fiber optic surface. During performance of this program these hydrazine species were reversibly detected at concentration levels down to 10 ppb in air using triphenylmethane dyes immobilized onto the surface of silica fiber optic sensors operating in the evanescent wave mode. Experimental work demonstrated that a spatial resolution for fiber optic sensor locations of several tens of meters can easily be obtained. This indicated that a distributed network for the reversible detection of trace hydrazines could be fabricated using standard electrooptical components.
- Fiber Optics and Integrated Optics