Optics and Precision Engineering, Volume. 33, Issue 13, 2020(2025)
Miniaturized near-infrared spectrometer based on MEMS-FPI sensor
Traditional near-infrared spectrometers are bulky and expensive, limiting their widespread application. Based on Hamamatsu's MEMS-FPI near-infrared spectroscopy sensor C14272, this research successfully developed a miniaturized near-infrared spectrometer operating in the 1350-1650 nm wavelength range. The system adopts a modular architecture, integrating efficient signal acquisition and data processing units, significantly reducing system costs. Through systematic performance evaluation, including wavelength accuracy, spectral resolution, dynamic range, and other metrics, combined with a temperature characteristic compensation algorithm that effectively suppresses temperature drift effects, experimental results demonstrate that this spectroscopic analysis system possesses excellent stability and reproducibility, with a spectral resolution of approximately 15.2 nm. Combined with a convolutional neural network algorithm, the glucose solution concentration prediction model exhibits high accuracy (R²>0.99) and low error rates (RMSE<0.2%) when detecting unknown samples. The developed miniaturized near-infrared spectrometer provides an economical and efficient solution for biomedical detection and food quality analysis.
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Ben LI, Fangfang CHEN, Fei WANG, Zansheng ZHENG, Yibo ZOU, Yiting YU. Miniaturized near-infrared spectrometer based on MEMS-FPI sensor[J]. Optics and Precision Engineering, 2025, 33(13): 2020
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Received: Apr. 9, 2025
Accepted: --
Published Online: Aug. 28, 2025
The Author Email: Ben LI (yyt@nwpu.edu.cn)