Journal
OPTICS EXPRESS
Volume 21, Issue 15, Pages 17863-17868Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.21.017863
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Funding
- National Basic Research Program of China (973 Program) [2010CB327804]
- National Natural Science Foundation of China [61007050, 61007051]
- National Natural Science Foundation of Zhejiang Province, China [Z13F050003]
- Zhejiang Xinmiao Talent Project [2012R409056]
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A novel magnetic field sensor using tilted fiber Bragg grating (TFBG) interacting with magnetic fluid is proposed and experimentally demonstrated. The TFBG is surrounded by magnetic fluid whose complex refractive index changes with external magnetic field. The guiding properties of cladding modes excited by the TFBG are therefore modulated by the external magnetic field. As a result, the magnetic field strength measurement is successfully achieved within a range up to 196 Gauss by monitoring extinction ratio of cladding mode resonance. Furthermore, temperature variation can be obtained simultaneously from the wavelength shift of the TFBG transmission spectrum. (C) 2013 Optical Society of America
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