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
Nicolas Godbout, Suzanne Lacroix, Yves Quiquempois, Gilbert Martinelli, and Pascal Bernage, "Measurement and calculation of electrostrictive effects in a twin-hole silica glass fiber," J. Opt. Soc. Am. B 17, 1-5 (2000)