Electrically Tuning Characteristics of LC Selectively Infiltrated PCF Sagnac Interferometer

被引：11

作者：

Xue, Pingsheng ^{[1
,2
]}

Liu, Qiang ^{[1
,2
]}

Wu, Zhaoxia ^{[1
,2
]}

Wu, Qiang ^{[3
]}

Zhao, Chenyu ^{[1
,2
]}

Ng, Wai Pang ^{[3
]}

Fu, Richard ^{[3
]}

Binns, Richard ^{[3
]}

机构：

[1] Northeastern Univ Qinhuangdao, State Key Lab Synthet Automat Proc Ind, Sch Control Engn, Qinhuangdao 066004, Hebei, Peoples R China

[2] Hebei Key Lab Micronano Precis Opt Sensing & Meas, Qinhuangdao 066004, Hebei, Peoples R China

[3] Northumbria Univ, Fac Engn & Environm, Newcastle Upon Tyne NE1 8ST, Tyne & Wear, England

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2021年 / 33卷 / 13期

基金：

中国国家自然科学基金;

关键词：

Sensitivity; Sagnac interferometers; Interference; Indexes; Voltage fluctuations; Tuning; Refractive index; Liquid crystal; photonic crystal fiber; sagnac interferometer; electric field sensing; modulators; PHOTONIC CRYSTAL FIBERS;

D O I：

10.1109/LPT.2021.3086482

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A photonic crystal fiber was selectively infiltrated only two of the air holes near the core with liquid crystal. The selective infiltration caused geometric asymmetry and created high birefringence. Because of the geometric asymmetry, the response to varying electric field is concerned with electric field direction. A Sagnac interferometer was set to investigate the electric tuning characteristics of the selectively infiltrated photonic crystal fiber. The effective refractive-indices of the fiber varies with electric field due to reorientation of liquid crystal molecules. The highest sensitivity was 1.12 nm/V (504 nm/kV/mm) with tuning range of 7 nm when electric field direction was parallel to the connecting line of infiltrated holes. The response time of the selectively infiltrated photonic crystal fiber was studied. The device can be utilized as voltage sensors, electro-optical modulators and filters.

引用

页码：668 / 671

页数：4

共 22 条

[1] Enhanced efficiency of electric field tunability in photonic liquid crystal fibers doped with gold nanoparticles [J].