EO-polymer waveguide based high dynamic range EM wave sensors
  In this paper, we present the design and experimental demonstration of a high dynamic range electric field sensor based on electro-optic (EO) polymer directional coupler waveguides that offers the strong and ultra-fast EO response of EO polymer. As compared to conventional photonic electric field sensors, our directional coupler waveguide design offers several advantages such as bias-free operation, highly linear measurement response up to 70dB, and a wide electric field detection range from 16.7V/m to 750kV/m at a frequency of 1GHz. 
Che-Yun Lin, Alan X. Wang, Xingyu Zhang, Beom Suk Lee, Ray T. Chen
physics.optics