Electro-optic polymers for high speed modulators


Balakrishnan, M and Diemeer, M.B.J. and Driessen, A. and Faccini, M. and Verboom, W. and Reinhoudt, D.N. and Leinse, A. (2005) Electro-optic polymers for high speed modulators. In: IEEE/LEOS Benelux Chapter 2005 Annual Symposium, December 1-2, 2005, Mons, Belgium (pp. pp. 313-316).

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Abstract:Different electro-optic polymer systems are analyzed with respect to their electro-optic activity, glass transition temperature (Tg) and photodefinable properties. The polymers tested are polysulfone (PS) and polycarbonate (PC). The electro-optic chromophore, tricyanovinylidenediphenylaminobenzene (TCVDPA),which was reported to have a highest photochemical stability [1] has been employed in the current work. Modified TCVDPA with bulky side groups has been synthesized, and a doubling of the electro-optic coefficient (r33) compared to the unmodified TCVDPA has been shown. The plasticizing effect of the chromophore, has been reduced by attaching it to the polymer backbone. SU8 (passive) and PC-TCVDPA (active) channel waveguides were fabricated by photodefinition technique and the passive waveguide losses were measured to be 5 dB/cm at 1550 nm.
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