Title :
Electrooptic sensor for near-field measurement
Author :
Cecelja, Franjo ; Balachandran, Wamadeva
Author_Institution :
Dept. of Manuf. & Eng. Syst., Brunel Univ. of West London, UK
fDate :
4/1/1999 12:00:00 AM
Abstract :
This paper presents a novel electric field measurement system utilizing optical technology, which has been developed, tested, and calibrated for the near-field measurement in the frequency range up to 1.8 GHz. The measuring probe is passive, all-dielectric, electromagnetic interference (EMI)-immune, and provides the information on the field strength, frequency, and phase. The achieved measurement resolution and minimum mode measurable fields were 10 V/m, with a spatial resolution of 10 mm. A finite-difference time-domain (FDTD) algorithm for solving Maxwell´s equation was used to assess the field perturbation by the presence of the measuring probe and the suitability for the near-field measurement
Keywords :
Maxwell equations; electric field measurement; electro-optical devices; finite difference time-domain analysis; optical sensors; polarimetry; 1.8 GHz; EM power distribution; FDTD algorithm; Maxwell´s equation; all-dielectric EMI-immune probe; calibration; electric field measurement system; electro-optic sensor; field perturbation; field strength; measurement resolution; minimum mode measurable fields; near-field measurement; passive measuring probe; photodetectors; polarimetric optical scheme; spatial resolution; Electric variables measurement; Electromagnetic measurements; Electrooptic devices; Finite difference methods; Frequency measurement; Optical sensors; Probes; Spatial resolution; System testing; Time domain analysis;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
