Stan Nikola, Seng Frederick, Shumway LeGrand, King Rex, Selfridge Richard, Schultz Stephen
Appl Opt. 2016 Jan 20;55(3):603-10. doi: 10.1364/AO.55.000603.
A fiber-optic electric field sensor was developed to measure electric field up to 18 MV/m. The sensor uses resonant coupling between an optical fiber and a nonlinear electro-optical crystal. The sensing system uses high dielectric strength materials to eliminate dielectric breakdown. A postprocessing nonlinear calibration method is developed that maps voltage change to wavelength shift and then converts the wavelength shift to electric field using the transmission spectrum. The nonlinear calibration method is compared against the linear method with electric field pulses having magnitudes from 1.5 to 18 MV/m.
开发了一种光纤电场传感器，用于测量高达18兆伏/米的电场。该传感器利用光纤与非线性电光晶体之间的共振耦合。传感系统使用高介电强度材料来消除介质击穿。开发了一种后处理非线性校准方法，该方法将电压变化映射到波长偏移，然后使用传输光谱将波长偏移转换为电场。将该非线性校准方法与线性方法进行了比较，所施加电场脉冲的幅度为1.5至18兆伏/米。
