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2013年10月30日

【期刊论文】基于单模-多模-单模结构和磁流体的光纤磁场传感器

韩群， Yaofei Chen， Qun Han*， T. Liu， Xinwei Lan， Hai Xiao

Optics Letters, 2013, 38(20):3999-4001.，-0001，（）：

-1年11月30日

摘要

An optical fiber magnetic field sensor based on the single-mode–multimode–single-mode (SMS) structure and mag-netic fluid (MF) is proposed and demonstrated. By using a piece of no-core fiber as the multimode waveguide in the SMS structure and MF sealed in a capillary tube as the magnetic sensitive media, which totally immersing the no-core fiber, an all-fiber magnetic sensor was fabricated. Interrogation of the magnetic field strength can be achieved either by measuring the dip wavelength shift of the transmission spectrum or by detecting the transmission loss at a specific wavelength. A demonstration sensor with sensitivities up to905pm∕mTand0.748dB∕mTwas fabricated and investigated. A theoretical model for the design of the proposed device was developed and numerical simu-lations were performed.

Fiber optics sensors， Fiber optics， Magneto-optical materials， Ferrofluid， Magnetic fluid.，