NONRESONANT N(2) AND 2-PHOTON-ABSORPTION DISPERSION MEASUREMENTS OF DPOP-PPV AND DP-PPV DP-PFV POLYMER STRIP WAVE-GUIDES/

A very stable and accurate semi-integrated Mach-Zehnder interferometer setup, that was used to obtain the sign and magnitude of the nonlinea r coefficient n(2) of two different main chain organic poly(phenylene vinylene) polymer derivatives in the wavelength region between 880-990 nm, is presented. The nonlinear refractive index coefficient n(2) is of the order of 10(-14) cm(2)/W for both polymers, Power dependent tra nsmission measurements provided the two-photon absorption coefficient beta. It ranges from almost zero to 0.16 cm/GW depending on the wavele ngth. The results show that the poly(phenylene-vinylene)-derivatives a re promising candidates for opto-optical waveguide switching elements.