中国物理B ›› 2019, Vol. 28 ›› Issue (11): 118701-118701.doi: 10.1088/1674-1056/ab44af

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    

High birefringence, low loss, and flattened dispersion photonic crystal fiber for terahertz application

Dou-Dou Wang(王豆豆), Chang-Long Mu(穆长龙), De-Peng Kong(孔德鹏), Chen-Yu Guo(郭晨瑜)   

  1. 1 College of Sciences, Xi'an University of Science and Technology, Xi'an 710054, China;
    2 The State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China
  • 收稿日期:2019-06-26 修回日期:2019-08-14 出版日期:2019-11-05 发布日期:2019-11-05
  • 通讯作者: Dou-Dou Wang E-mail:wangdoudou@xust.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 11604260) and the Outstanding Youth Science Fund of Xi'an University of Science and Technology, China (Grant No. 2019YQ3-10).

High birefringence, low loss, and flattened dispersion photonic crystal fiber for terahertz application

Dou-Dou Wang(王豆豆)1, Chang-Long Mu(穆长龙)1, De-Peng Kong(孔德鹏)2, Chen-Yu Guo(郭晨瑜)1   

  1. 1 College of Sciences, Xi'an University of Science and Technology, Xi'an 710054, China;
    2 The State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China
  • Received:2019-06-26 Revised:2019-08-14 Online:2019-11-05 Published:2019-11-05
  • Contact: Dou-Dou Wang E-mail:wangdoudou@xust.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 11604260) and the Outstanding Youth Science Fund of Xi'an University of Science and Technology, China (Grant No. 2019YQ3-10).

摘要: A type of photonic crystal fiber based on Kagome lattice cladding and slot air holes in a rectangular core is investigated. Full vector finite element method is used to evaluate the modal and propagation properties of the designed fiber. High birefringence of 0.089 and low effective material loss of 0.055 cm-1 are obtained at 1 THz. The y-polarized fundamental mode of the designed fiber shows a flattened and near-zero dispersion of 0±0.45 ps·THz-1·cm-1 within a broad frequency range (0.5 THz-1.5 THz). Our results provide the theory basis for applications of the designed fiber in terahertz polarization maintaining systems.

关键词: terahertz, photonic crystal fiber, birefringence, loss, dispersion

Abstract: A type of photonic crystal fiber based on Kagome lattice cladding and slot air holes in a rectangular core is investigated. Full vector finite element method is used to evaluate the modal and propagation properties of the designed fiber. High birefringence of 0.089 and low effective material loss of 0.055 cm-1 are obtained at 1 THz. The y-polarized fundamental mode of the designed fiber shows a flattened and near-zero dispersion of 0±0.45 ps·THz-1·cm-1 within a broad frequency range (0.5 THz-1.5 THz). Our results provide the theory basis for applications of the designed fiber in terahertz polarization maintaining systems.

Key words: terahertz, photonic crystal fiber, birefringence, loss, dispersion

中图分类号: 

  • 87.50.U-
42.81.Qb (Fiber waveguides, couplers, and arrays) 42.81.Gs (Birefringence, polarization)