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In-line absorption sensor based on coiled optical microfiber
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10.1063/1.3582924
/content/aip/journal/apl/98/17/10.1063/1.3582924
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/17/10.1063/1.3582924
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic of the fabrication process; (a) coiling a tapered fiber onto an expendable PMMA rod connecting Teflon tubes, (b) covering the coil with a Teflon solution, and (c) after removing of the PMMA rod by dipping the device in acetone for one day, the analyte may freely move in the channel.

Image of FIG. 2.
FIG. 2.

Transmission spectra of the tapered microfiber coil resonator before and after removal of the PMMA expendable rod.

Image of FIG. 3.
FIG. 3.

Comparison between absorption spectra of Brilliant Blue FCF aqueous solution measured with the proposed device (, solid black line) and reference spectrum recorded with a spectrophotometer (, red dashed line).

Image of FIG. 4.
FIG. 4.

Dependence of as a function of the refractive index of the surrounding medium for a silica tapered microfiber .

Image of FIG. 5.
FIG. 5.

Dependence of the measured optical losses at 630 mn on the analyte molar concentration. Dashed blue line represents the fitting curve calculated by the Gupta model of EW absorption in optical fibers. Solid red line represents the fitting result assuming adsorption mechanism and applying the Langmuir equation.

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/content/aip/journal/apl/98/17/10.1063/1.3582924
2011-04-27
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: In-line absorption sensor based on coiled optical microfiber
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/17/10.1063/1.3582924
10.1063/1.3582924
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