Electric field sensor based on electro-optic polymer refilled silicon slot photonic crystal waveguide coupled with bowtie antenna

摘要

We present the design of a compact and highly sensitive electric field sensorbased on a bowtie antenna-coupled slot photonic crystal waveguide (PCW). Anelectro-optic (EO) polymer with a large EO coefficient, r33=100pm/V, is used torefill the PCW slot and air holes. Bowtie-shaped electrodes are used as bothpoling electrodes and as receiving antenna. The slow-light effect in the PCW isused to increase the effective in-device r33>1000pm/V. The slot PCW is designedfor low-dispersion slow light propagation, maximum poling efficiency as well asoptical mode confinement inside the EO polymer. The antenna is designed foroperation at 10GHz.