摘要
针对当前光纤电流传感器较难同时实现较高灵敏度和较好稳定性的问题,根据法拉第效应,从理论上建立了基于琼斯矩阵的直通式、反射式全光纤电流传感器的数学模型;利用OptiSystem软件进行仿真,得到直通式、反射式全光纤电流传感器的线性灵敏度分别为0.24和0.37。提出了光纤环形衰荡结构,将强度调制转换为时间调制,从而消除了光源及外界环境对系统性能的影响,使系统同时实现较高的灵敏度和较好的稳定性。通过理论及实验证实了该方案的可行性。
In view of the difficulty of achieving high sensitivity and good stability at the same time for fiber current sensors, mathematical models of straight-through and reflective all-fiber current sensors based on Jones matrix are set up in theory according to Faraday effect. The simulation is conducted by the OptiSystem software, and the linear sensitivities of straight-through and reflective all-fiber current sensors are 0.24 and 0.37. A fiber loop ring-down structure is proposed, and the intensity modulation is converted into the time modulation. The effects of light source and external environment on the performance of system are eliminated, so the system can achieve high sensitivity and good stability at the same time. The scheme is verified in theory and experiment.
出处
《激光与光电子学进展》
CSCD
北大核心
2017年第1期65-75,共11页
Laser & Optoelectronics Progress
基金
国家自然科学基金(51307036
51677044)
黑龙江省自然科学基金(E201303)
