摘要
A high-finesse extrinsic Fabry-Perot interferometric sensor for the measurement of weak dc magnetic fields is demonstrated. The Fabry-Perot cavity is formed by aligning the fiber end-face and the TbDyFe rod end-face, and each end-face is coated by a mirror with a micro-lens. The length of the TbDyFe rod is changed by the variation of an applied dc magnetic field, leading a change of the Fabry-Perot cavity length. By interrogating the white-light interferometric spectrum, the wavelength of the resonant peak is tracked and the length of the Fabry-Perot cavity is obtained. The sensor exhibits a high sensitivity of 1510 nm/mT with a magnetic resolution of 25 nT.
| 源语言 | 英语 |
|---|---|
| 页（从-至） | 62-65 |
| 页数 | 4 |
| 期刊 | Optics and Lasers in Engineering |
| 卷 | 71 |
| DOI | |
| 出版状态 | 已出版 - 1 8月 2015 |
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Chen, F., Jiang, Y., Gao, H., & Jiang, L. (2015). A high-finesse fiber optic Fabry-Perot interferometer based magnetic-field sensor. Optics and Lasers in Engineering, 71, 62-65. https://doi.org/10.1016/j.optlaseng.2015.03.013