Nonintrusive Field Characterization in Interior Cavities with Slab-Coupled Optical Sensor

摘要

This paper presents the advances made in electric field sensing using a slab-coupled optical sensor (SCOS). We continue to enhance the use of optical fiber interrogation with electro-optic materials as a method of field sensing. The fabrication materials are all insulators and therefore allow for detection of fields without altering them. The sensors are also much smaller than current metallic field sensors, allowing them to be used in locations in which bulkier sensors cannot be placed. This work uses D-shaped fiber to achieve resonant coupling with electro-optic crystals and polymer. This study reports how a SCOS sensor can perform accurate, low-loss, X-band field detection. We also show how complex fields are analyzed by creating two-dimensional sensors. Each of these advances proves that SCOS devices could be viable solutions for electric field sensing challenges in the area of directed energy weapons.