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Slab coupled optical fiber sensor calibration
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10.1063/1.4789766
/content/aip/journal/rsi/84/2/10.1063/1.4789766
http://aip.metastore.ingenta.com/content/aip/journal/rsi/84/2/10.1063/1.4789766

Figures

Image of FIG. 1.
FIG. 1.

SCOS wavelength spectrum. The solid curve shows measured data. The dashed curve shows an exaggerated shift in the wavelength spectrum to illustrate how applying an electric field alters the transmission.

Image of FIG. 2.
FIG. 2.

SCOS interrogation block diagram.

Image of FIG. 3.
FIG. 3.

SCOS spectrum for three laser powers.

Image of FIG. 4.
FIG. 4.

Laser calibration setup block diagram.

Image of FIG. 5.
FIG. 5.

Block diagram of the software process. The shaded boxes show the steps that require human interaction. The white boxes are performed completely autonomously.

Image of FIG. 6.
FIG. 6.

The solid line shows the waveform produced by the calibration program. The program was set up to test each wavelength of the tunable laser (0.2 nm step size), and took approximately 30 min to complete. For comparison, the dashed line is the wavelength spectrum of the SCOS that was calibrated.

Image of FIG. 7.
FIG. 7.

The solid line shows the waveform produced by the calibration program. The program was set up to test 1/5 of the possible wavelengths of the tunable laser (1 nm step size), and took approximately 6 min to complete. For comparison, the dashed line is the wavelength spectrum of the SCOS that was calibrated.

Image of FIG. 8.
FIG. 8.

Block diagram of the SCOS calibration.

Image of FIG. 9.
FIG. 9.

Measurements of the SCOS calibration. The top graph shows the voltage applied to the electrodes. The bottom graph shows the voltage signal measured by the SCOS.

Image of FIG. 10.
FIG. 10.

SCOS measurement as a function of electric field strength. The points are the measured data. The slope of the fit line is the geometric mean of the five calibration ratios.

Image of FIG. 11.
FIG. 11.

SCOS measurement of electric field between two copper plates.

Tables

Generic image for table
Table I.

Calibration ratio verses frequency of a polymer SCOS.

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/content/aip/journal/rsi/84/2/10.1063/1.4789766
2013-02-22
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Slab coupled optical fiber sensor calibration
http://aip.metastore.ingenta.com/content/aip/journal/rsi/84/2/10.1063/1.4789766
10.1063/1.4789766
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