title: Spectrum Reconstruction of a Spatially Modulated Fourier Transform Spectrometer Based on Stepped Mirrors.
abstract: Based on the basic configuration and interference principle of a static step-mirror-based Fourier transform spectrometer, an image segmentation method is proposed to obtain a one-dimensional interferogram. The direct current component of the interferogram is fit using the least squares (LS) method and is subsequently removed. An empirical-mode decomposition-method-based high-pass filter is constructed to denoise the spectrum and enhance the spectral resolution simultaneously. Several experiments were performed and the spectrum is reconstructed based on these methods. The spectrum resolution is 81 cm-1at 2254 cm-1.
authors.affiliation: 1 State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin, China.|2 University of Chinese Academy of Sciences, Beijing, China.
authors.forename: Jianhua
authors.initials: J
authors.lastname: Gao
authors.affiliation: 1 State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin, China.
authors.forename: Zhongzhu
authors.initials: Z
authors.lastname: Liang
authors.affiliation: 1 State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin, China.
authors.forename: Jingqiu
authors.initials: J
authors.lastname: Liang
authors.affiliation: 1 State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin, China.
authors.forename: Weibiao
authors.initials: W
authors.lastname: Wang
authors.affiliation: 1 State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin, China.
authors.forename: Jinguang
authors.initials: J
authors.lastname: Lü
authors.affiliation: 1 State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin, China.
authors.forename: Yuxin
authors.initials: Y
authors.lastname: Qin
keywords: Fourier transform (FT) spectrometer; Step mirror; empirical-mode decomposition denoising; image segmentation; spectrum reconstruction