Making Optical-Fiber Chemical Detectors More Sensitive

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Making Optical-Fiber Chemical Detectors More Sensitive

Making Optical-Fiber Chemical Detectors More Sensitive

Rogowski, Robert S. / Egalon, Claudio O.

Calculations based on exact theory of optical fiber shown how to increase optical efficiency and sensitivity of active-cladding step-index-profile optical-fiber fluorosensor using evanescent wave coupling. Optical-fiber fluorosensor contains molecules fluorescing when illuminated by suitable light in presence of analyte. Fluorescence coupled into and launched along core by evanescent-wave interaction. Efficiency increases with difference in refractive indices.

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Title :

Making Optical-Fiber Chemical Detectors More Sensitive

Contributors:

Rogowski, Robert S. (author) / Egalon, Claudio O. (author)

Published in:

NASA Tech Briefs ; 17 , 3

Publication date :

1993-03-01

ISSN :

Type of media :

Miscellaneous

Type of material :

No indication

Language :

English

Keywords :

Physical Sciences

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