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Multipoint relative humidity measurement by polyvinyl alcohol-coated Fresnel reflection-based optical fiber sensors with an array-waveguide grating
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10.1063/1.4803005
/content/aip/journal/rsi/84/4/10.1063/1.4803005
http://aip.metastore.ingenta.com/content/aip/journal/rsi/84/4/10.1063/1.4803005
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Experimental setup of the multipoint measurement humidity sensor.

Image of FIG. 2.
FIG. 2.

Spectra response of the output light to relative humidity when both the 6th and the 11th channels of the AWG were put into the humidity chamber at the same time.

Image of FIG. 3.
FIG. 3.

The relationships between relative reflection intensity and relative humidity for the 6th and the 11th channels.

Image of FIG. 4.
FIG. 4.

The relationships between the relative reflection intensity and relative humidity at different times for the 6th and the 11th channels.

Image of FIG. 5.
FIG. 5.

Reflection spectra of three adjacent sensor channels working at the same time. The humidity of the 11th channel increases from 35% RH to 80% RH and the 6th, the 10th, and the 12th channels remain stable at the 65% RH, 55% RH, and 35% RH, respectively.

Image of FIG. 6.
FIG. 6.

Relative reflection intensity of the 11th channel against RH when adjacent channels working at the same time. Line: fitting function F2. Pointes: experimental data.

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/content/aip/journal/rsi/84/4/10.1063/1.4803005
2013-04-30
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Multipoint relative humidity measurement by polyvinyl alcohol-coated Fresnel reflection-based optical fiber sensors with an array-waveguide grating
http://aip.metastore.ingenta.com/content/aip/journal/rsi/84/4/10.1063/1.4803005
10.1063/1.4803005
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