Novel optical fiber current sensor based on magnetic fluid

• 来源期刊: 中国光学快报(英文版)
• 学科: 工学
• 关键词: 光纤电流传感器 磁流体 光纤布拉格光栅 测量系统 新型光纤 电磁原理 解调方法 初始浓度
• 年，卷（期）: 2010,（4）
• 所属期刊栏目: Instrumentation, Measurement, and Metrolog~
• 页码范围: 392-394
• 页数: 3页
• 分类号: TN253 TP212
• 语种: 英文

摘要

A novel fiber optic Fabry-Perot(F-P) current sensor is developed based on magnetic fluid as the medium in F-P interference cavity.A signal demodulation method based on slanted fiber Bragg grating(FBG) wavelength measurement system is proposed.Theory and principle of electromagnetic-controlled refractive index of the magnetic fluid is described,as well as the structure of the sensor system.Preliminary experiments are carried out,and the results indicate that there is a fairly good linearity of the measure...