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ieee international conference on electronic measurement instruments | 2015

The measurement system of Faraday effect in an optical fiber based on Stokes parameter analysis

Chai Zhaopu; Yi Huang; Pang Fufei; Wen Jianxiang; Wang Tingyun

Magneto-optical fiber plays an important role in magneto-optical devices. The Faraday effect has broad applications such as Faraday rotators, isolators and current sensors. This paper investigates the magneto-optical properties by measuring the polarization states in the fiber. A new magneto-optic system based on the Stokes parameters method is designed, which could analyze the Faraday effect in an intuitive way. The evolution of polarization states in an optical fiber is described by a series of Jones matrices and Stokes parameters. The relationship between the Jones matrix and Stokes parameters of a same polarization state is given. The corresponding Faraday rotation angle can be measured in the external magnetic field with different magnetic strength by using this measurement system. The magnetic field is generated in a customized solenoid driven by a current source. The optical fiber under test is put into a glass tube in the center of the solenoid. The light beam is coupled into the fiber by a positioning stage with lens and transferred all in free space in order to decrease the influence of intrinsic birefringence in the fiber. The output beam is received by the external receiver of the polarization analyzing system which extracts the Stokes parameters of the polarized light. The Faraday rotation angle equals the difference of two azimuths drawn from the Stokes parameters of the input and output polarizations. The final output polarization state described by Stokes parameters can also be viewed directly in the Poincare sphere. The Verdet constant of a commercial SMF is measured to be -2.36±0.01 rad/(T·m) at 660nm and -0.53±0.01 rad/(T·m) at 1550nm, respectively, which validate the good performance of this measurement system.


Archive | 2015

3D (3-Dimensional) printing doped fiber preform rod preparation system

Chen Zhenyi; Wang Tingyun; Wen Jianxiang; Pang Fufei; Huang Zhaoming


Archive | 2013

Polarization independent tunable optical filter based on quasi-phase matching crystal

Zeng Xianglong; Zhang Qianwu; He Chao; Fu Xinghu; Wen Jianxiang; Pang Fufei; Wang Tingyun


Journal of Inorganic Materials | 2018

Gamma-ray Radiation on Magneto-optical Property of Pb-doped Silica Fiber

Wen Jianxiang; Wang Wen-Na; Guo Qi; Huang Yi; Dong Yanhua; Pang Fufei; Chen Zhenyi; Liu Yunqi; Wang Tingyun


Optical Materials | 2017

PbSドープシリカ光ファイバの吸収と蛍光特性に及ぼす熱処理の影響【Powered by NICT】

Qin Fu; Dong Yanhua; Wen Jianxiang; Pang Fufei; Luo yanhua; Peng Gang-Ding; Chen Zhenyi; Wang Tingyun


Archive | 2016

Bi/Al co-doped silica fiber and preparation method thereof

Wen Jianxiang; Wang Tingyun; Dong Yanhua; Liu Wenjun; Pang Pifei; Chen Zhenyi; Guo Qiang


Archive | 2016

Bi/Er or Bi/Er/Al co-doped quartz fiber and preparation method thereof

Wen Jianxiang; Wang Tingyun; Dong Yanhua; Wang Jie; Pang Pifei; Chen Zhenyi; Guo Qiang


Archive | 2016

Nano-semiconductor PbS-doped quartz amplifying fiber and preparation method for same

Wang Tingyun; Wen Jianxiang; Dong Yanhua; Chen Zhenyi; Pang Pifei; Guo Qiang


Archive | 2016

Preparation method of 3D printed optical-fiber preformed rod with cross sectional structure in optional geometrical shapes

Chen Zhenyi; Wang Tingyun; Pang Fufei; Wen Jianxiang; Chen Na


Archive | 2015

Method for increasing Verdet constant of optical fiber by radiation technique

Wang Tingyun; Chai Zhaopu; Gong Renxiang; Huang Yi; Chen Huangchao; Wen Jianxiang

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Guo Qiang

China Southern Power Grid Company

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Luo yanhua

University of New South Wales

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