The paper is organized as follows. In Section 2 we describe the sensor design, the measurement protocol and the procedures employed to prepare the calibration samples. Section 3 presents the acquired data, a summary of the deconvolution method and the result of the calibration. Section 4 discusses the optimization study, detailing the methodology used to identify the optimal number and placement of spectral channels and the resulting performance improvements. Finally, in Section 5, we summarize the key findings and draw the conclusions.