Fig. 1. Physical image and typical response curve of C14272 sensor

Fig. 2. Circuit functional block of MEMS-FPI near-infrared spectrometer

Fig. 3. Prototype of MEMS-FPI near-infrared spectrometer

Fig. 4. Response curves of spectrometer under 10 levels of adjustable light source intensity

Fig. 5. Resolution measurement result of spectrometer with 1 550 nm narrow-band filter

Fig. 6. Measurement results of wavelength accuracy and repeatability of spectrometer

Fig. 7. Full-band photometric repeatability test results of MEMS-FPI spectrometer

Fig. 8. Photometric repeatability curve at 1 450 nm

Fig. 9. Dynamic range testing results of MEMS-FPI near-infrared spectrometer

Fig. 10. Experimental setup for glucose concentration detection

Fig. 11. Spectral data processing of glucose solutions

Fig. 12. Loss curves during CNN model training

Fig. 13. Glucose concentration prediction results of CNN model

Fig. 14. Comparison of prediction performance between CNN and PLS models