27 April 2007 Electric field sensor based on core-replaced optical D-fiber
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Abstract
This paper presents a means for creating optical fiber sensors that are capable of detecting electric fields. This novel E-field sensor is formed as part of a contiguous fiber resulting in a flexible and small cross-section device that could be embedded into electronic circuitry. The sensor is formed by partially etching out the core of a D-shaped optical fiber and depositing an electro-optic polymer. Using PMMA and DR1 for proof of concept, we demonstrate the operation of the first in-fiber hybrid waveguide electric field sensor with a sensitivity of less than 100 V/m at a frequency of 2.9 GHz. Sensors optimized for low loss (~1dB) have an estimated E&pgr; of 222 MV/m. A sensor with an E&pgr; of 60 MV/m is also demonstrated with an insertion loss of 14.4 dB.
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Eric K. Johnson, Josh M. Kvavle, Richard H. Selfridge, Stephen M. Schultz, Richard Forber, Wen Wang, De Yu Zang, "Electric field sensor based on core-replaced optical D-fiber", Proc. SPIE 6525, Active and Passive Smart Structures and Integrated Systems 2007, 65251X (27 April 2007); doi: 10.1117/12.715384; https://doi.org/10.1117/12.715384
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KEYWORDS
Sensors

Polymers

Electric field sensors

Waveguides

Electrodes

Optical fibers

Glasses

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