Design of linear variable optical filter-based spectrum analysis system

Maoheng Jing; Xiang Xiao; Meishan Zhong; Jiajie Huang; Zhiming Wang; Chun Li; Shideng Zhu; Jiguang Zhao; Weixun Zhang; Shengrong Liu

doi:10.1117/12.3056087

19 December 2024 Design of linear variable optical filter-based spectrum analysis system

Maoheng Jing, Xiang Xiao, Meishan Zhong, Jiajie Huang, Zhiming Wang, Chun Li, Shideng Zhu, Jiguang Zhao, Weixun Zhang, Shengrong Liu

Author Affiliations +

Proceedings Volume 13444, Fifth International Conference on Mechanical Engineering, Intelligent Manufacturing, and Mechatronics (MEIMM 2024); 134440B (2024) https://doi.org/10.1117/12.3056087
Event: The 5th International Conference on Mechanical Engineering, Intelligent Manufacturing, and Mechatronics, 2024, Guilin, China

Abstract

At present, the better the linear variable optical filter (LVOF) performance, the more difficult its fabrication. In order to address this issue, this study designs a LVOF targeting the solar-blind ultraviolet wavelength region (200–300nm), visible light region (510–700nm), and near-infrared region (800–1050nm) by utilizing the Fabry-Perot resonator principle and the optical transfer matrix method. In the visible spectrum range, the working wavelength band of this filter is 510–700nm, with a peak transmittance exceeding 61%. The ratio of the full width at half maximum (FWHM) to the peak wavelength is 5%, and the linear dispersion coefficient reaches 8.37nm/mm. By combining the visible spectrum linear variable optical filter with a band-pass filter and linear array charge coupled device (CCD), a spectral analysis system is constructed to measure the emission spectrum of the fluorescent glass. The experimental results demonstrate the advantages of our technology in terms of accuracy and efficiency.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Maoheng Jing, Xiang Xiao, Meishan Zhong, Jiajie Huang, Zhiming Wang, Chun Li, Shideng Zhu, Jiguang Zhao, Weixun Zhang, and Shengrong Liu "Design of linear variable optical filter-based spectrum analysis system", Proc. SPIE 13444, Fifth International Conference on Mechanical Engineering, Intelligent Manufacturing, and Mechatronics (MEIMM 2024), 134440B (19 December 2024); https://doi.org/10.1117/12.3056087

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KEYWORDS

Spectroscopy

Optical filters

Charge-coupled devices

Transmittance

Tunable filters

Visible radiation

Design

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