Calibration method of spatial modulation spectropolarimetry

Li Shuang; Yuan Qi; Gong Ping

doi:10.3788/IRLA201645.1113002

Calibration method and process for spatial modulating optical structure composed of quarter wave plate, composite birefringent wedge and polarizer was studied, and the calibrating equations of spectrum and radiation were presented. Based on the polarization principle of spatial modulation, linear least square method for calibration of polarization was provided. By simulation analysis, it is indicated that calibrating accuracy of linear least square method is higher than that of standard fou-point method, the modulating coefficient deviation of linear least square method has the maximum of about 210-4, and moreover, distributes stochastically in the modulating period.

Calibration method of spatial modulation spectropolarimetry

1. Center of Optical Remote Sensing,Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Hefei 230031,China;

2. Key Laboratory of Optical Calibration and Characterization,Chinese Academy of Sciences,Hefei 230031,China;

3. University of Chinese Academy of Sciences,Beijing 100049,China

Received Date: 2016-03-05

Rev Recd Date: 2016-04-07

Publish Date: 2016-11-25

Key words:

Abstract: Calibration method and process for spatial modulating optical structure composed of quarter wave plate, composite birefringent wedge and polarizer was studied, and the calibrating equations of spectrum and radiation were presented. Based on the polarization principle of spatial modulation, linear least square method for calibration of polarization was provided. By simulation analysis, it is indicated that calibrating accuracy of linear least square method is higher than that of standard fou-point method, the modulating coefficient deviation of linear least square method has the maximum of about 210-4, and moreover, distributes stochastically in the modulating period.

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Reference (10)

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Calibration method of spatial modulation spectropolarimetry

doi: 10.3788/IRLA201645.1113002

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