High Dynamic Range Electric Field Sensor for Electromagnetic Pulse   Detection
  We design a high dynamic range electric field sensor based on domain inverted electro-optic (E-O) polymer Y-fed directional coupler for electromagnetic wave detection. This electrode-less, all optical, wideband electrical field sensor is fabricated using standard processing for E-O polymer photonic devices. Experimental results demonstrate effective detection of electric field from 16.7V/m to 750KV/m at a frequency of 1GHz, and spurious free measurement range of 70dB. 
Che-Yun Lin, Alan X. Wang, Beom Suk Lee, Xingyu Zhang, and Ray T. Chen
physics.optics