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Effect of dielectric constant on modulation voltage for nonlinear optic polymer-based optoelectronic devices

Presented is the effect of using various cladding layers with different dielectric constants on the applied modulation voltage for nonlinear optic (NLO) polymer based integrated OE devices. The dielectric constants of the core and cladding materials used for NLOs polymer based integrated optoelectronic devices are typically very similar in magnitude. This suggests that even for low modulation rates, only 20% to 25% of the applied modulation voltage (voltage between the electrodes) is being dropped across the core region. With this small percentage of applied voltage reaching the NLO core layer, it becomes necessary to apply 4 to 5 times higher modulation voltage in order to achieve the desired (pi) phase change through the core.