Electro-optic sensor from high Q resonance between optical D-fiber and slab waveguide.
An electro-optic sensor capable of detecting electric fields with a high degree of sensitivity and linearity is fabricated using optical D-fiber. The slab coupled optical sensor utilizes weak coupling and long evanescent interaction with a lithium niobate waveguide. Transmission dips from mode resonances have a linewidth of 0.12 nm and a Q factor of approximately 13,000. These sharp resonances improve device sensitivity and are achieved due to the unique fabrication process possible with D-shaped fibers. The sensor deviates <0.1% from linearity while monitoring fields between 200 V/m and 20 kV/m and promises high sensitivity to fields well beyond that range.
Gibson
Richard
R
Department of Electrical and Computer Engineering, Brigham Young University,459 Clyde Building, Provo, Utah 84602, USA. rich@gibsonfamily.info
Selfridge
Richard
R
Schultz
Stephen
S
Wang
Wen
W
Forber
Richard
R