Thermally Stable and Highly Active Electro-Optic Materials

Pacific Wave Industries proposes to systematically increase resistivity of EO polymer (CX series) while maintaining the already achieved high thermal stability and low optical loss. The goal is to obtain an EO polymer having a resistivity two order ofmagnitude lower than that of existing cladding materials. Following strategies have been designed to increase resistivity: a) Reduce the number of freely rotating single bonds in monomers, b) Reduce the amount of flexible pendant groups on chromophore todecrease thermal energy of chromophore, and c) Introduce more highly polar groups to increase static interactions. To compensate for the loss in thermal stability, we will reduce the number of freely rotating single bonds in monomers and the amount offlexible pendant groups on chromophore to decrease thermal energy of chromophore, and introduce more highly polar groups to increase static interactions. With increased core layer resistivity, poling efficiency and DC bias stability will be improved, andthe tolerance on cladding material will be larger in terms of resistivity.