Piezoelectric and optical setup to measure an electrical field: Application to the longitudinal near-field generated by a tapered coax

TL;DR

This paper introduces a novel piezoelectric and optical measurement setup with 100 um resolution for assessing the longitudinal electrical near-field generated by tapered coaxial cables, combining simulations and experiments.

Contribution

The paper presents a new measurement system using piezoelectric and optical techniques to accurately analyze electrical fields near coaxial cable extremities.

Findings

The setup achieves 100 um spatial resolution.

Simulations and experiments validate the measurement accuracy.

The shape of the coaxial cable extremity influences the near-field.

Abstract

We propose a new setup to measure an electrical field in one direction. This setup is made of a piezoelectric sintered lead zinconate titanate film and an optical interferometric probe. We used this setup to investigate how the shape of the extremity of a coaxial cable influences the longitudinal electrical near-field generated by it. For this application, we designed our setup to have a spatial resolution of 100 um in the direction of the electrical field. Simulations and experiments are presented.