Application and Research of the Elliptical Core Dual-mode Fiber in the Voltage Sensor

Introduce the modes in dual-mode fibersdiscuss the stability of mode patterns in elliptical-core dual-mode fiber. Based on the transmitted field the characteristic of interference and sensing between two modes is investigated and point out the disciplinarian of far field two-lobe radiation patterns. According to the various perturbations the influences of the axial strain radial strain and temperature change on the phase difference are discussed. Analyze the structure and principle of fiber voltage sensor that is based on converse piezoelectric effect and the signal acquisition.