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Cross section of the PCF used in the experiments. The drawing is a presentation of the PCF microtaper exposed to vapor molecules of volatile compounds.
Normalized transmission spectra of a thick interferometer in air (dotted lines) and VOC vapors. (a) Device spectra when it was immersed in vapor molecules of methylene chloride (dashed line) and chloroform (solid line). (b) Spectra when the device was enveloped by vapor molecules of methyl alcohol (dashed line) and isopropyl alcohol (solid line).
Shift per mole as a function of the refractive index of the volatile compounds. The taper is that described in Fig. 2. The four points are experimental data and the continuous line is a fitting to the data.
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