High-birefringence, low-loss porous fiber for single-mode terahertz-wave guidance

被引：89

作者：

Chen, Na-na ^{[1
,2
]}

Liang, Jian ^{[1
,2
]}

Ren, Li-yong ^{[1
]}

机构：

[1] Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

APPLIED OPTICS | 2013年 / 52卷 / 21期

基金：

中国科学院西部之光基金; 中国国家自然科学基金;

关键词：

PHOTONIC CRYSTAL FIBERS; DISPERSION; GUIDES; SPECTROSCOPY; PROPAGATION; FABRICATION; RADIATION; LATTICE;

D O I：

10.1364/AO.52.005297

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A new kind of polymer porous fiber with elliptical air-holes is designed for obtaining high birefringence in the terahertz (THz) frequency range in this paper. Using the finite element method, the properties of this kind of fiber are simulated in detail including the single-mode propagation condition, the birefringence, and the loss. Theoretical results indicate that the single-mode THz wave in the frequency range from 0.73 to 1.22 THz can be guided in the fiber; the birefringence can be enhanced by rotating the major axis of the elliptical air-hole and there exists an optimal rotating angle at 30 degrees. At this optimal angle a birefringence as high as 0.0445 can be obtained in a wide frequency range. Low-loss THz guidance can be achieved owing to the effective reduction of the material absorption in such a porous fiber. This research is useful for polarization-maintaining THz-wave guidance. (c) 2013 Optical Society of America

引用

页码：5297 / 5302

页数：6

共 28 条

[1] Porous fibers: a novel approach to low loss THz waveguides [J].