All-fiber optical modulator based on no-core fiber and magnetic fluid as cladding

An all-fiber optical modulator, which is composed of a piece of no-core fiber spliced between two sections of singlemode 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 co...

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Bibliographic Details
Published in:Chinese physics B 2015, Vol.24 (1), p.315-320
Main Author: 陈耀飞 韩群 刘铁根
Format: Article
Language:English
Subjects:
Cladding
Dynamic response
Magnetic fields
Magnetic fluids
Modulators
Optical fibers
Optimization
Wavelengths
光调制器
全光纤
包层
单模光纤
无芯
磁场强度
磁性流体
磁流体
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Summary:An all-fiber optical modulator, which is composed of a piece of no-core fiber spliced between two sections of singlemode 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.
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/24/1/014214