MOLECULAR DESIGN OF NONLINEAR-OPTICAL POLYMERIC MATERIALS FOR SWITCHING DEVICE APPLICATION

Molecular design of nonlinear optical (NLO) polymeric materials for de vice application such as ultrafast optical switches are discussed. It is necessary to fabricate channel waveguides to realize polymeric NLO switching devices that can be driven with lower laser power. For that purposes, we have proposed a molecular structure of processable NLO po lymers where the reduction of an attenuation loss and the attainments of higher processability of the polymers are achieved. Third-order non linear optical properties, chi((3)), of novel NLO polymers were around 10(-10) esu at 1.5 mu m wavelength region. Even in off-resonant regio ns, their chi((3)) values are around 5 x 10(-11) esu. Single mode chan nel waveguides of the polymers are fabricated using a standard photo-p rocess. Attenuation loss through the film and that far the single mode waveguide at 1.32 mu m wavelength was also reported.