期刊
CHINESE PHYSICS B
卷 24, 期 1, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1674-1056/24/1/014214
关键词
optical fiber; optical modulator; no-core fiber; magnetic fluid
资金
- Natural Science Foundation of Tianjin City, China [13JCYBJC16100]
- National Natural Science Foundation of China [61107035]
- National Key Scientific Instrument and Equipment Development Project of China [2013YQ03091502]
- National Basic Research Program of China [2010CB327802, 2010CB327806]
An all-fiber optical modulator, which is composed of a piece of no-core fiber spliced between two sections of single-mode fibers and uses magnetic fluid (MF) as the cladding of the no-core fiber section, is proposed and investigated experimentally. Due to the tunable refractive index and absorption coefficient of MF, the output intensity can be modulated by controlling an applied magnetic field. The dependences of the modulator's temporal response on the working wavelength, the magnetic field strength (H), and the MF's concentration are investigated experimentally. The results are explained qualitatively by the dynamic response process of MF under the action of a magnetic field. The findings are helpful for optimizing this kind of modulator.
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