Bent silica fiber evanescent absorption sensors for near-infrared spectroscopy

Journal Article · Thu Jul 01 00:00:00 EDT 1999 · Applied Spectroscopy

DOI:https://doi.org/10.1366/0003702991947423· OSTI ID:686514

Littlejohn, D; Lucas, D; Han, L ^[1]

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1. Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)

Silica optical fibers have been modified to improve their sensitivity as evanescent wave sensors for liquids. A section of fiber is stripped of its cladding and bent or coiled, which significantly increases the evanescent wave interaction with the surrounding environment. The effect of sensor shape, solute concentration, refractive index, and temperature on the sensor response is discussed. {copyright} {ital 1999} {ital Society for Applied Spectroscopy}

• Research Organization: Lawrence Berkeley National Laboratory
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 686514
• Journal Information: Applied Spectroscopy, Journal Name: Applied Spectroscopy Journal Issue: 7 Vol. 53; ISSN 0003-7028; ISSN APSPA4
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
ABSORPTION
AQUEOUS SOLUTIONS
CHEMICAL ANALYSIS
EMISSION SPECTROSCOPY
FOURIER TRANSFORM SPECTROMETERS
OPTICAL FIBERS
SENSITIVITY ANALYSIS