Application of a Multiple Regression Model for the Simultaneous Measurement of Refractive Index and Temperature Based on an Interferometric Optical System

Table 1

Variables and the corresponding used criterions to obtain their values.

Variables	Criterion
	Wavelengths of P1–P4
	Wavelengths of and
	Wavelength of the fringe with the greatest amplitude
	Amplitude of
	Amplitude of the fringe with the greatest amplitude
	Mean amplitude of the spectrum in the region from 1500 to 1595 nm
	Area under the curve within spectral regions ER1, ER2, ER3, and ER4
	Full area of the spectral region between 1500 and 1595 nm
	Amplitude of P1–P5
	Area of the fringes covering
	Root mean square value of the spectral region from 1500 to 1595 nm
	Centroid of the spectral region from 1500 to 1595 nm