We fabricated and tested an evanescent-wave absorption sensor consisting of an optical microfiber coil resonator embedded in fluidic channel walls. Low concentrations of flowing analyte show optical losses in agreement with a modified Beer-Lambert law. Higher concentration causes a limit value of the measured optical losses arising from adsorption mechanisms.
Lorenzi, R., Jung, Y., Brambilla, G. (2011). In-line absorption sensor based on coiled optical microfiber. APPLIED PHYSICS LETTERS, 98(17), 1-3 [10.1063/1.3582924].
In-line absorption sensor based on coiled optical microfiber
Lorenzi, R
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2011
Abstract
We fabricated and tested an evanescent-wave absorption sensor consisting of an optical microfiber coil resonator embedded in fluidic channel walls. Low concentrations of flowing analyte show optical losses in agreement with a modified Beer-Lambert law. Higher concentration causes a limit value of the measured optical losses arising from adsorption mechanisms.
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