FIBER OPTIC MICHELSON INTERFEROMETRIC SENSORS DETECTING WEAK MAGNETIC FIELD Invited Paper

摘要：

Magnetostrictive fiber-optic interferometric sensors have great advantages in detecting low-intensity magnetic field and significant progress has been made recently. In this paper, we investigate and compare the performance of Mach-Zehnder and Michelson fiber-optic interferometric sensors. A new structure of transducer called racetrack transducer for the fiber optic Michelson interferometer was implemented. The experimental results show that it has high sensitivity and directivity with long-term stability. In addition to the traditional hardware electronic detection, we implemented peak-to-peak detection and found the sensitivity and stability can be improved, especially in detecting ultra low magnetic field. We also developed a scheme using AD converters and software for detection. Example detecting a DC magnetic field was given and the results agree well with the one obtained using hardware electronics.

关键词： Mach-Zehnder Michelson Fiber-optic Interferometric Sensors Magnetostriction Software Detection

作者: Jianping Chen Changhai Shi Xinwan Li

作者单位: The State Key Laboratory on Fiber-Optic Local Area Networks and Advanced Optical Communication Systems, Shanghai Jiao Tong University, Shanghai 200240, P. R. China

会议类型: 国际会议

会议名称: The 5th International Conference on Optical Communications and Networks & the 2nd International Symposium on Advances and Trends in Fiber Optics and Applications(第5届国际光通信与网络年会暨第2届纤维光学发展现状与未来趋势国际学术研讨会)

会议地点: 成都

会议语种:英文

页码: 421-424

在线出版日期: 2006-09-18（万方平台首次上网日期，不代表论文的发表时间）