Ellipsometry with randomly varying polarization states
نویسندگان
چکیده
منابع مشابه
Ellipsometry with randomly varying polarization states.
We show that, under the right conditions, one can make highly accurate polarization-based measurements without knowing the absolute polarization state of the probing light field. It is shown that light, passed through a randomly varying birefringent material has a well-defined orbit on the Poincar sphere, which we term a generalized polarization state, that is preserved. Changes to the generali...
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We show analytically how periodic spinning affects the polarization mode dispersion of a fiber in three different practical regimes that are determined by the values of three length scales: the beat length, the birefringence correlation length, and the spin period. We determine in which limits the spin is effective in reducing the mean differential group delay.
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Polarization decorrelation in single-mode fibers with randomly varying elliptical birefringence is studied. It is found that the effects of ellipticity on the polarization decorrelation length depend on the relative sizes of the beat length and the autocorrelation length of the birefringence fluctuations in the fiber. However, the evolution of the differential group delay remains unaffected by ...
متن کاملPolarization decorrelation in optical fibers with randomly varying birefringence.
Polarization decorrelation in single-mode fibers with randomly varying birefringence is studied. We find that decorrelation length is minimized for a given beat length if the average autocorrelation length of the birefringence is close to the average beat length. The differential time delay between the polarization modes is found to depend on the autocorrelation length of the birefringence rath...
متن کاملNonlinear polarization-mode dispersion in optical fibers with randomly varying birefringence
Randomly varying birefringence leads to nonlinear polarization-mode dispersion (PMD) in addition to the wellknown linear PMD. Here we calculate the variance of the field fluctuations produced by this nonlinear PMD. Knowing the size of these fluctuations is useful for assessing when nonlinear PMD is important and for its proper incorporation in fast numerical algorithms. We also derive the equil...
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ژورنال
عنوان ژورنال: Optics Express
سال: 2012
ISSN: 1094-4087
DOI: 10.1364/oe.20.000870