Experimental setup of the multipoint measurement humidity sensor.
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.
The relationships between relative reflection intensity and relative humidity for the 6th and the 11th channels.
The relationships between the relative reflection intensity and relative humidity at different times for the 6th and the 11th channels.
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.
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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