We propose digital correction methods for recovering aberrated spectra in a portable low-cost miniaturized grating-based spectrometer, which is modelled in optical and numerical simulations. To realize the digital spectrum recovery, different Point Spread Function (PSF) modelling approaches for wavelength-dependent PSFs are proposed and implemented into four digital correction algorithms, namely inverse Fourier Transform (IFT) deconvolution, Wiener deconvolution, Lucy-Richardson (LR) and Landweber iterative algorithm. Results show that both LR and Landweber algorithms can improve the spectral resolution by about a factor of two. The enhanced spectral resolution is comparable to that of commercial table-top spectrometers, while our spectrometer has a much smaller packaging volume of about one cubic inch.
Liu, J, Schretter, C, Shcheglov, A, Ottevaere, PDIH & Nie, Y 2024, Digital aberration correction to enhance the spectral resolution of miniaturized optical spectrometers. in P Schelkens & T Kozacki (eds), Digital aberration correction to enhance the spectral resolution of miniaturized optical spectrometers. vol. 12998, 129980V, Proceedings of SPIE - The International Society for Optical Engineering, vol. 12998, SPIE, pp. 1-14, Conference on Optics, Photonics, and Digital Technologies for Imaging Applications VIII, Strasbourg, France, 9/04/24. https://doi.org/10.1117/12.3017394
Liu, J., Schretter, C., Shcheglov, A., Ottevaere, P. D. I. H., & Nie, Y. (2024). Digital aberration correction to enhance the spectral resolution of miniaturized optical spectrometers. In P. Schelkens, & T. Kozacki (Eds.), Digital aberration correction to enhance the spectral resolution of miniaturized optical spectrometers (Vol. 12998, pp. 1-14). Article 129980V (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 12998). SPIE. https://doi.org/10.1117/12.3017394
@inproceedings{2e5d8baef390421d85a10e1c40c6d7dd,
title = "Digital aberration correction to enhance the spectral resolution of miniaturized optical spectrometers",
abstract = "We propose digital correction methods for recovering aberrated spectra in a portable low-cost miniaturized grating-based spectrometer, which is modelled in optical and numerical simulations. To realize the digital spectrum recovery, different Point Spread Function (PSF) modelling approaches for wavelength-dependent PSFs are proposed and implemented into four digital correction algorithms, namely inverse Fourier Transform (IFT) deconvolution, Wiener deconvolution, Lucy-Richardson (LR) and Landweber iterative algorithm. Results show that both LR and Landweber algorithms can improve the spectral resolution by about a factor of two. The enhanced spectral resolution is comparable to that of commercial table-top spectrometers, while our spectrometer has a much smaller packaging volume of about one cubic inch.",
keywords = "IMAGE-RESTORATIONALGORITHMREGULARIZATIONDECONVOLUTIONACCELERATION",
author = "Jinyan Liu and Colas Schretter and Artem Shcheglov and Ottevaere, {Prof. Dr. Ir. Heidi} and Yunfeng Nie",
note = "Funding Information: The authors acknowledge the European Unionu2019s Horizon 2020 Research and Innovation program under the Marie Sklodowska Curie Action xCLASS (765635). This work was also supported by Fonds Wetenschappelijk Onderzoek (1252722 N, G0A3O24N), the Methusalem and Hercules foundations, and the OZR of Vrije Universiteit Brussel (VUB). Publisher Copyright: { extcopyright} 2024 SPIE.; Conference on Optics, Photonics, and Digital Technologies for Imaging Applications VIII ; Conference date: 09-04-2024 Through 11-04-2024",
year = "2024",
month = jan,
day = "1",
doi = "10.1117/12.3017394",
language = "English",
volume = "12998",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
pages = "1--14",
editor = "Peter Schelkens and Tomasz Kozacki",
booktitle = "Digital aberration correction to enhance the spectral resolution of miniaturized optical spectrometers",
address = "United States",
}