Chemical Sensing Using Fiber Cavity Ring-Down Spectroscopy
Loading...
Authors
Waechter, Helen
Litman, Jessica
Cheung, Adrienne H.
Barnes, Jack A.
Loock, Hans-Peter
Date
2016-03-18
Type
journal article
Language
en
Keyword
Cavity ring-down (CRD) , Absorption , Refractive Index , Fiber-Loop , Fiber Cavity , Microfluidics , Capillary Electrophoresis , Phase-Shift , Long-Period Grating (LPG) , Fiber Bragg Grating (FBG)
Alternative Title
Abstract
Waveguide-based cavity ring-down spectroscopy (CRD) can be used for quantitative measurements of chemical concentrations in small amounts of liquid, in gases or in films. The change in ring-down time can be correlated to analyte concentration when using fiber optic sensing elements that change their attenuation in dependence of either sample absorption or refractive index. Two types of fiber cavities, i.e., fiber loops and fiber strands containing reflective elements, are distinguished. Both types of cavities were coupled to a variety of chemical sensor elements, which are discussed and compared.
Description
Citation
Publisher
License
Journal
Volume
Issue
URI for this record
PubMed ID
External DOI
ISSN
1424-8220