Magneto and Electro-Optic Intensity Modulator Based on Liquid Crystal and Magnetic Fluid Filled Photonic Crystal Fiber  

作　　者：Yue-Lan Lu Fei-Ru Wang Chi Zhang ai-Wen Yin Yu Huang Wei-min Sun Yong-Jun Liu 吕月兰;王斐儒;张弛;尹辑文;黄玉;孙伟民;刘永军(Key Lab of In-fiber Integrated Optics (Ministry Education), Harbin Engineering University, Harbin 150001;Physics and Electronic Information Engineering, Chifeng University, Chifeng 024000)

机构地区：[1]Key Lab of In-flber Integrated Optics（Ministry Education）,Harbin Engineering University,Harbin 150001 [2]Physics and Electronic Information Engineering,Chifeng University,Chifeng 024000

出　　处：《Chinese Physics Letters》2018年第10期36-39,共4页中国物理快报（英文版）

基　　金：Supported by the Joint Research Fund in Astronomy under Cooperative Agreement between the National Natural Science Foundation of China and Chinese Academy of Sciences under Grant No U1531102;the Fundamental Research Funds for the Central Universities under Grant No HEUCF181116;the National Natural Science Foundation of China under Grant Nos61107059,61077047 and 11264001

摘　　要：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/um at 20 Hz and the cut-off magnetic field is 195 m T. This simple and compacted optical modulator will have a great prospect in sensing applications.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/um at 20 Hz and the cut-off magnetic field is 195 m T. This simple and compacted optical modulator will have a great prospect in sensing applications.

关 键 词：PCF LC Magneto and Electro-Optic Intensity Modulator Based on Liquid Crystal and Magnetic Fluid Filled Photonic Crystal Fiber 

分 类 号：TN253[电子电信—物理电子学]