Pupil plane multiplexing for multi-domain imaging sensors


Conference Paper

We describe an approach to polarimetric imaging based on a unique folded imaging system with an annular aperture. The novelty of this approach lies in the system's collection architecture, which segments the pupil plane to measure the individual polarimetric components contributing to the Stokes vectors. Conventional approaches rely on time sequential measurements (time-multiplexed) using a conventional imaging architecture with a reconfigurable polarization filter, or measurements that segment the focal plane array (spatial multiplexing) by super-imposing an array of polarizers. Our approach achieves spatial multiplexing within the aperture in a compact, lightweight design. The aperture can be configured for sequential collection of the four polarization components required for Stokes vector calculation or in any linear combination of those components on a common focal plane array. Errors in calculating the degree of polarization caused by the manner in which the aperture is partitioned are analyzed, and approaches for reducing that error are investigated. It is shown that reconstructing individual polarization filtered images prior to calculating the Stokes parameters can reduce the error significantly.

Full Text

Duke Authors

Cited Authors

  • Horstmeyer, R; Euliss, GW; Athale, RA; Morrison, RL; Stack, RA; Ford, J

Published Date

  • September 29, 2008

Published In

Volume / Issue

  • 7096 /

International Standard Serial Number (ISSN)

  • 0277-786X

International Standard Book Number 13 (ISBN-13)

  • 9780819473165

Digital Object Identifier (DOI)

  • 10.1117/12.797772

Citation Source

  • Scopus