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Proceedings Paper

Phase-shifting interferometry in fiber-based channeled spectropolarimetry
Author(s): Ali Altaqui; M. W. Kudenov
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Paper Abstract

Channeled spectropolarimetry measures the spectral dependence of the polarization states of light. This technique is marked by its snapshot feature, in that the complete polarization states can be determined simultaneously from a single intensity spectrum. However, without athermalization, it suffers from high sensitivity to temperature, which in turn, degrades the polarimetric reconstruction accuracy. In this paper, we present a calibration technique for a fiber-based channeled spectropolarimetry that leverages phase-shifting interferometry to accurately demodulate the retarders' phase, thereby improving the accuracy of the acquired Stokes parameters. Additionally, it enables robust spectropolarimetric performance that is insensitive to environmental perturbations. Experimental results demonstrate that calibrations using phase-shifting interferometry improve the Stokes reconstruction results by approximately a factor of 3 when compared to the reference beam calibration method.

Paper Details

Date Published: 6 September 2019
PDF: 6 pages
Proc. SPIE 11132, Polarization Science and Remote Sensing IX, 111320N (6 September 2019); doi: 10.1117/12.2529975
Show Author Affiliations
Ali Altaqui, North Carolina State Univ. (United States)
M. W. Kudenov, North Carolina State Univ. (United States)

Published in SPIE Proceedings Vol. 11132:
Polarization Science and Remote Sensing IX
Julia M. Craven; Joseph A. Shaw; Frans Snik, Editor(s)

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