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Wire grid polarizers (WGP), are sub-wavelength gratings with applications in display projection
system due to their compact size, wide field of view and long-term stability. Measurement and testing
of these structures are important to optimize their use. This is done by first measuring the Mueller
Matrix of the WGP using a Mueller Matrix Polarimeter. Next the Finite Difference Time Domain
(FDTD) method is used to simulate a similar Mueller matrix thus providing the period and step height
of the WGP. This approach may lead to more generic determination of sub-wavelength structures
including diffractive optical structures.
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