| 盛朝霞,陈耀飞,韩群.基于磁流体和无芯光纤的磁场传感器[J].光电子激光,2014,(6):1044~1048 |
| 基于磁流体和无芯光纤的磁场传感器 |
| Magnetic field sensor based on magnetic fluid and no-core fiber |
| 投稿时间：2013-10-28 |
| DOI： |
| 中文关键词: 光纤传感器 磁场传感 单模-多模-单模(SMS) 磁流体(MF) |
| 英文关键词:fiber sensor magnetic sensor single mode-multimode-single mode (SMS) magnet ic fluid (MF) |
| 基金项目:国家自然科学基金(61107035)和天津市自然科学基金(13JCYBJC16100)资助项目 (1.天津职业技术师范大学 理学院,天津 300222； 2.天津大学 精密仪器与光电子工程学院,光电信息技术教育部重点实验室,天津 300072) |
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| 中文摘要: |
| 用无芯光纤(NCF)作为单模-多模-单模(SMS)结构 中的多模光波导,并将其浸没在密封于毛细 管内的磁流体(MF)中,形成了一种新型的全光纤化磁场传感器。传感器可利用磁场变化时其 透射 谱中谷值波长的移动或峰值波长处的透射率变化对相应的磁场变化进行测量。完成了传感 器的制作并进行了实验研究,在传感器长约9cm时,实验得到的磁场灵敏度分别达到 了78pm/Oe和0.129dB/Oe。除了作为磁场传 感器,本文装置还可以用来作为磁控可调光衰减器或光调制器。 |
| 英文摘要: |
| In this paper,an all-fiber magnetic field sensor based on magnetic f luid (MF) and the single mode-multimode-singlemode (SMS) structure,using a piece of no-cor e fiber (NCF) as the multimode waveguide,is proposed.The SMS structure is sealed in a capillary f illed with MF.The change of the strength of the external magnetic field will cause a wavelength-shif t dip or peak wavelength attenuation on the transmission spectrum and then be detected and measured.An al l-fiber magnetic field sensor with sensitivities up to 78pm/Oe and 0.129dB/Oe,respectively,was fabricated and experimentally investigated.Besides being used as a magnetic field sensor,the device can also be used as a magnetic-driven tunable optical attenuator or modu lator. |
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