Porous Silicon Bragg Reflector Sensor: Applying HSV Color Space for Sensor Characterization

The colorimetric approaches based on CIE1931 and HSV [Hue Saturation Value] color space were considered in the article as a prospective method of characterization of the reflectance response of the optical sensor. The transfer matrix method was used for the determination of reflectivity spectra of porous silicon based distributed Bragg reflectors with pores filled with analyte with refractive index in the range 1.3 ... 1.4. Traditional parameters of the sensor as the position of peak maxima and FWHM, CIE1931 colorimetric parameters as dominant wavelength and excitation purity, [H S V] components were determined for different low and high values of refractive indexes of layers of the optical sensor.