D-Fiber antenna characterization using finite-element analysis

摘要

An all-fiber antenna using piezoelectric polymer coated circularncore D-fiber has been characterized using finite-element analysis. Thenresponse of the D-fiber antenna was determined over a wide frequencynrange from 1 MHz to 2 GWz. The modeling predicts an electric fieldninduced phase shift of 2.43×10-6 rad/(V/m) per meter atn5 MHz. At frequencies higher than 8 MHz, the optical response isndominated by radial resonances of the D-fiber/coating composite. Usingnthe simulation results, a minimum detectable electric field of 41nΜV/m has been achieved using a 1 km length of coated D-fiber. Innaddition, a D-fiber antenna network intended for microcellularncommunications has been analyzed using shot noise limited detection. ThenD-fiber antenna has potential applications in areas such asnelectromagnetic compatibility testing and radio-over-fiber networksnwhere it provides a convenient means of optically generating radionsignals