Abstract: The second-order nonlinear properties of step-index polymer electrooptic (EO) fiber are discussed. The fiber is fabricated in the Nonlinear Optics Laboratory at WSU. Use of a Mach-Zehnder interferometer to determine the linear electrooptic coefficient of the EO fiber and quadratic electrooptic coefficient for a thin film is discussed. The data thus obtained is shown to be reproducible and of correct magnitude. !7
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