Electric Field Sensing With Photonic Liquid Crystal Fibers Based on Micro-Electrodes Systems

Thermo- and electro-optical properties of photonic liquid crystal fibers doped with gold nanoparticles

“…There was a layer of silicon between the electrodes to prevent electric discharge that could destroy the sample. More details of the experimental setup are presented elsewhere [30]. The output signal was collected by a Newport power meter.…”

Mode-division and spatial-division optical fiber sensors

“…Although most optical fiber materials do not have a second-order optical nonlinearity, it is possible to build fiber electric field sensors by surface refractometry with the help of electro-optic coatings. The most frequent examples of this have been liquid crystal coatings (or infiltrations into the holes of microstructured fibers), but those are limited to static or relatively low-frequency measurements [252][253][254]. Recent developments in the accuracy and sensitivity of fiber-based refractometers open up new possibilities using solid electro-optic coatings at frequencies limited only by the speed of the fiber interrogation systems (at least tens of gigahertz for single wavelength/photodetector detection systems) using laser light tuned on the edge of a transmission resonance, as in [186].…”

Photonic Liquid Crystal Fibers – 15 years of research activities at Warsaw University of Technology

“…However, it is also possible to use multi-electrode steering (i.e. [14]), which, in practice, can allow for an almost arbitrary change of the direction of the field and, in consequence, a controlled change of the induced birefringence and/or PDL. By combining those effects, it is possible to build tunable wave-plates, phase shifters, polarizers or even polarization controllers and dispersion compensators [15].…”