A novel magnetic field fiber sensor by using magnetic fluid in Sagnac loop

作者：Zu Peng^*; Chan Chi Chiu; Jin Yongxing; Zhang Yifan; Dong Xinyong

来源：21st International Conference on Optical Fiber Sensors, 2011-05-15 To 2011-05-19.

DOI：10.1117/12.884704

• Magnetic field sensor
• optical fiber sensor
• magnetic fluid
• Sagnac loop
• magneto-optic effect
• birefringence

A novel magnetic field sensor by using magnetic fluid film in Sagnac loop is presented. The magnetic fluid introduces controllable birefringence under external magnetic field inside the Sagnac loop to produce sinusoidal interference and the corresponding transmission spectrum shifts with the change of external field strength. Sensitivity of 11.4 pm/Oe and resolution of 0.88 Oe are achieved in the case of this proposed scheme.

• 出版日期2011
• 单位南阳理工学院