Abstract
A precise method for evaluating the electro-optic coefficients of an optical fiber is introduced. The method was used to characterize the third-order nonlinearity of twin-hole silica fibers. The polarization dependence expected for isotropic materials and the Kleinmann symmetry condition was not observed. We explain the lack of polarization dependence of the third-order tensor by taking into account the electrostrictive contribution to the quadratic electro-optic effect.
© 2000 Optical Society of America
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