Journal
APPLIED PHYSICS LETTERS
Volume 103, Issue 15, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4824470
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Funding
- National Natural Science Foundation of China [11004110, 11274182, 11204212]
- National Key Basic Research and Development Program of China [2010CB327605]
- Science & Technology Support Project of Tianjin [11ZCKFGX01800]
- China Postdoctoral Science Foundation [2012M520024]
- Fundamental Research funds for the Central Universities
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A compact magnetic field sensor has been proposed based on multimode interference effects. It consists of typical multimode interferometer (MMI) immersed into the magnetic fluid (MF) which is formed by a section of square no-core fiber (NCF) spliced between two single-mode fibers. The transmission spectral characteristics of this MMI have been analyzed, and the spectral magnetic response of the proposed sensor has been investigated by immersing the NCF into the MF environment. The transmission response of the interference maxima exhibits a sensitivity of -0.01939 dB/Oe in the relatively linear range. Due to its low cost and compactness, this sensor would find potential applications in the measurement of magnetic field. (C) 2013 AIP Publishing LLC.
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