Bi-dimensional empirical mode decomposition based fringe-like pattern suppression in polarization interference imaging spectrometer

作者：Ren, Wenyi; Cao, Qizhi; Wu, Dan; Jiang, Jiangang^*; Yang, Guoan; Xie, Yingge; Wang, Guodong; Zhang, Sheqi

来源：Optics Communications, 2018, 407: 280-284.

DOI：10.1016/j.optcom.2017.09.071

• Fringe analysis
• Fourier transform spectrometer
• Empirical mode decomposition

Many observers using interference imaging spectrometer were plagued by the fringe-like pattern(FP) that occurs for optical wavelengths in red and near-infrared region. It brings us more difficulties in the data processing such as the spectrum calibration, information retrieval, and so on. An adaptive method based on the bi-dimensional empirical mode decomposition was developed to suppress the nonlinear FP in polarization interference imaging spectrometer. The FP and corrected interferogram were separated effectively. Meanwhile, the stripes introduced by CCD mosaic was suppressed. The nonlinear interferogram background removal and the spectrum distortion correction were implemented as well. It provides us an alternative method to adaptively suppress the nonlinear FP without prior experimental data and knowledge. This approach potentially is a powerful tool in the fields of Fourier transform spectroscopy, holographic imaging, optical measurement based on moire fringe, etc.

• 出版日期2018-1-15
• 单位南宁师范大学; 西安交通大学; 西北农林科技大学