A novel interferometric fiber-optic magnetometer with double digital closed-loop detection scheme

摘要：

A novel interferometric fiber-optic magnetometer with double digital closed-loop detection scheme is presented in this paper. The particular design of optical circuit is performed to the conventional Michelson interferometer based fiber-optic magnetometer. The digital correlation detection technique with double closed-loop is applied to demodulate the weak magnetic field. One digital closed-loop with square-wave phase modulation is realized to eliminate the low-frequency environmental phase drift The other is utilized to suppress the hysteresis effects of the magnetostrictive material and recover the magnetic field to be measured. Simulation results on the digital closed-loop algorithms verify the feasibility of the proposed scheme.

关键词： fiber-optic magnetometer digital closed-loop square-wave phase modulation digital correlation detection

作者: Lijing Li Xiujuan Feng Hui Li Chunxi Zhang Sheng Liang Chuansheng Li

作者单位: School of Instrument Science and Opto-Electronics Engineering, Beihang University, Beijing, China

会议类型: 国际会议

会议名称: 2011 International Conference on Electronics and Optoelectronics(2011电子学与光电子学国际会议 ICEOE 2011)

会议地点: 大连

会议语种:英文

页码: 1220-1223

在线出版日期: 2011-07-29（万方平台首次上网日期，不代表论文的发表时间）