中国物理B ›› 2004, Vol. 13 ›› Issue (7): 1052-1058.doi: 10.1088/1009-1963/13/7/015

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Polarization-maintaining photonic crystal fibre

娄淑琴, 王智, 任国斌, 简水生   

  1. Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044, China
  • 收稿日期:2003-09-04 修回日期:2004-03-01 出版日期:2004-07-05 发布日期:2005-07-05
  • 基金资助:
    Project supported by the National High Technology Development Program of China (Grant No 2002AA312190) and the Pandeng Fund of Beijing Jiaotong University (Grant No PD221).

Polarization-maintaining photonic crystal fibre

Lou Shu-Qin (娄淑琴), Wang Zhi (王智), Ren Guo-Bin (任国斌), Jian Shui-Sheng (简水生)   

  1. Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044, China
  • Received:2003-09-04 Revised:2004-03-01 Online:2004-07-05 Published:2005-07-05
  • Supported by:
    Project supported by the National High Technology Development Program of China (Grant No 2002AA312190) and the Pandeng Fund of Beijing Jiaotong University (Grant No PD221).

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摘要： Photonic crystal fibres (PCFs) offer new possibilities of realizing highly birefringent fibres due to a higher intrinsic index contrast compared to conventional fibres. In this paper, we analyse theoretically the modal properties of a kind of polarization-maintaining PCF, namely the elliptical hole photonic crystal fibre (EHPCF) with a central small elliptical hole introduced in the core region. We demonstrate the possibility of achieving large birefringence with zero walk-off in the single-mode regime. This PCF also exhibits unusual dispersion properties. Several hundred nanometres of ultra broadband flattened dispersion near the wavelength 1.55μm is achieved in this EHPCF with a central small hole of d_c=0.4Λ.

关键词: photonic crystal fibre (PCF), birefringence, walk-off parameter, dispersion

Abstract: Photonic crystal fibres (PCFs) offer new possibilities of realizing highly birefringent fibres due to a higher intrinsic index contrast compared to conventional fibres. In this paper, we analyse theoretically the modal properties of a kind of polarization-maintaining PCF, namely the elliptical hole photonic crystal fibre (EHPCF) with a central small elliptical hole introduced in the core region. We demonstrate the possibility of achieving large birefringence with zero walk-off in the single-mode regime. This PCF also exhibits unusual dispersion properties. Several hundred nanometres of ultra broadband flattened dispersion near the wavelength 1.55μm is achieved in this EHPCF with a central small hole of dc=0.4$\varLambda$.

Key words: photonic crystal fibre (PCF), birefringence, walk-off parameter, dispersion

中图分类号:  (Photonic bandgap materials)

  • 42.70.Qs
42.81.Gs (Birefringence, polarization) 42.81.Dp (Propagation, scattering, and losses; solitons)