Magneto and Electro-Optic Intensity Modulator Based on Liquid Crystal and Magnetic Fluid Filled Photonic Crystal Fiber
Yue-Lan Lu1 , Fei-Ru Wang1,2 , Chi Zhang1 , Ji-Wen Yin2 , Yu Huang1 , Wei-Min Sun1 , Yong-Jun Liu1**
1 Key Lab of In-fiber Integrated Optics (Ministry Education), Harbin Engineering University, Harbin 1500012 Physics and Electronic Information Engineering, Chifeng University, Chifeng 024000
Abstract ：We propose a novel light intensity modulator based on magnetic fluid and liquid crystal (LC) filled photonic crystal fibers (PCFs). The influences of electric and magnetic fields on the transmission intensity are theoretically and experimentally analyzed and investigated. Both the electric and magnetic fields can manipulate the molecular arrangement of LC to array a certain angle without changing the refractive index of the LC. Therefore, light loss in the PCF varies with the electric and magnetic fields whereas the peak wavelengths remain constant. The experimental results show that the transmission intensity decreases with the increase of the electric and magnetic fields. The cut-off electric field is 0.899 V/μm at 20 Hz and the cut-off magnetic field is 195 mT. This simple and compacted optical modulator will have a great prospect in sensing applications.
收稿日期: 2018-07-20
出版日期: 2018-09-15
:
42.81.Dp
(Propagation, scattering, and losses; solitons)
83.80.Xz
(Liquid crystals: nematic, cholesteric, smectic, discotic, etc.)
61.30.Gd
(Orientational order of liquid crystals; electric and magnetic field effects on order)
引用本文:
. [J]. 中国物理快报, 2018, 35(10): 104203-.
链接本文:
https://cpl.iphy.ac.cn/CN/10.1088/0256-307X/35/10/104203
或
https://cpl.iphy.ac.cn/CN/Y2018/V35/I10/104203
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2018, Vol. 35 
