High dynamic range electric field sensor for electromagnetic pulse detection

Abstract

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.

Integrated Optical $E$-Field Sensor for Intense Nanosecond Electromagnetic Pulse Measurement

“…Generally, the detection system of intense nanosecond EMP does not need high sensitivity but should have large intrinsic bandwidth, fast response time, flat frequency response and a detectable range within several kilovolts per meter to tens of kilovolts per meter [1], [2]. Currently, various antennaprobes are applied to the measurement of EMP.…”

“…However, such sensor needs a stringent fabrication technology especially the fabrication of domain inverted area [2]. In this letter, a LiNbO 3 based integrated optical E-field sensor with Mach-Zehnder (MZ) optical waveguide interferometer and bowtie antenna has been designed and fabricated.…”

Polymer-Based Hybrid-Integrated Photonic Devices for Silicon On-Chip Modulation and Board-Level Optical Interconnects

“…Based on the advantages of polymer materials, EO polymer modulators have shown great potentials for a variety of applications, such as telecommunication and digital communication [14,15], analog-to-digital conversion [16], phased-array radar [17], and electromagnetic field sensing [18], etc. Excellent velocity matching between microwaves and optical waves can be achieved due to a close match between the refractive index of polymers at microwave and optical frequencies, enabling ultra-broad bandwidth operation.…”

High Voltage Sensing Based on Fiber Fabry–Perot Interferometer Driven by Electric Field Forces

“…The sensors based on Pockels effect are mostly made of a Mach-Zehnder interferometer on a crystal plate [9], [10]. The bandwidth of the sensor can reach MHz even GHz [10], [11]. So far, the integration of the crystal and the optical fiber they used for light transmission has not been properly achieved yet.…”