Polymer electro-optic modulators with applications to photonic link systems requiring high spur free dynamic range are discussed. Multilayer high microbeta electro-optic polymer modulators were designed, fabricated and tested. The linearized designs include three electrode electro-optic modulators, 3dB coupled directional couplers, Mach Zehnder modulators, dual drive modulators. The problem of bias drift is thoroughly discussed. A 3dB coupled directional coupler with increasing separation between arms (splayed) was modeled, fabricated and tested as a candidate for a bias free modulator.