激光与光电子学进展, 2017, 54 (1): 010602, 网络出版: 2017-01-17
光纤电流传感器性能分析及环形衰荡结构设计 下载: 717次
Performance Analysis for Fiber Current Sensor and Design for Loop Ring-Down Structure
光纤光学 光纤传感器 环形衰荡腔 法拉第效应 灵敏度 稳定性 fiber optics fiber sensors loop ring-down cavity Faraday effect sensitivity stability
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。
Abstract
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.
孙滨超, 沈涛. 光纤电流传感器性能分析及环形衰荡结构设计[J]. 激光与光电子学进展, 2017, 54(1): 010602. Sun Binchao, Shen Tao. Performance Analysis for Fiber Current Sensor and Design for Loop Ring-Down Structure[J]. Laser & Optoelectronics Progress, 2017, 54(1): 010602.