Broadband electro-optic measurement system for intense pulsed electric fields enabled by power-over-fiber

Area of Science:

• Electrical Engineering
• Electromagnetics
• Sensor Technology

Background:

• Modern electromagnetic environments feature transient pulsed electric fields, demanding robust measurement systems.
• Conventional active sensors face limitations in stability and power duration during strong-field tests like electromagnetic pulse experiments.

Purpose of the Study:

• To develop a novel power-over-fiber-based transient electric-field measurement system.
• To ensure continuous, electromagnetically immune power delivery for enhanced measurement stability.

Main Methods:

• Utilized a laser power converter for uninterrupted power supply.
• Designed a system for stable operation across a temperature range of 26°C-40°C.

Main Results:

• Achieved stable measurements of electric fields up to 50 kV/m.
• Demonstrated a -3dB bandwidth reaching 6 GHz, indicating superior frequency response.
• Recorded a linear dynamic range of 56 dB and a sensitivity of 24.3 mV/(kV/m).
• Exhibited a transient response with a rise time under 2.3 ns.

Conclusions:

• The power-over-fiber system effectively addresses limitations of conventional sensors in strong electromagnetic fields.
• The developed system provides reliable, high-performance transient electric-field measurements suitable for demanding applications.