Complete leaky mode coupling in dual-core photonic crystal fibre based on the coupled-mode theory

doi:10.1088/1674-1056/20/6/064101

中国物理B ›› 2011, Vol. 20 ›› Issue (6): 64101-064101.doi: 10.1088/1674-1056/20/6/064101

Complete leaky mode coupling in dual-core photonic crystal fibre based on the coupled-mode theory

周桂耀¹, 侯蓝田¹, 苑金辉², 余重秀², 桑新柱², 张锦龙²

(1)Institute of Infrared Optical Fibres and Sensors, College of Information Science and Engineering, Yanshan University, Qinhuangdao 066004, China; (2)Key Laboratory of Information Photonics and Optical Communications of Ministry of Education, Beijing University of Posts and Telecommunications, P. O. Box 163, Beijing 100876, China

收稿日期:2010-05-10 修回日期:2011-01-05 出版日期:2011-06-15 发布日期:2011-06-15
基金资助:
Project supported by the National Key Basic Research Special Foundation of China (Grant No. 2010CB327605), the National High-Technology Research and Development Program of China (Grant No. 2009AA01Z220), the Key Grant of the Chinese Ministry of Education (Grant No. 109015), the Discipline Co-construction Project of Beijing Municipal Commission of Education (Grant No. YB20081001301), the Open Fund of Key Laboratory of Information Photonics and Optical Communications (Beijing University of Posts and Telecommunications), Ministry of Education, and the Specialized Research Fund for the Doctoral Program of Beijing University of Posts and Telecommunications (Grant No. CX201023).

Complete leaky mode coupling in dual-core photonic crystal fibre based on the coupled-mode theory

Yuan Jin-Hui(苑金辉)^a)†, Yu Chong-Xiu(余重秀)^a), Sang Xin-Zhu(桑新柱)^a), Zhang Jin-Long(张锦龙)^a), Zhou Gui-Yao(周桂耀)^b), and Hou Lan-Tian(侯蓝田)^b)

^a Key Laboratory of Information Photonics and Optical Communications of Ministry of Education, Beijing University of Posts and Telecommunications, P. O. Box 163, Beijing 100876, China; ^b Institute of Infrared Optical Fibres and Sensors, College of Information Science and Engineering, Yanshan University, Qinhuangdao 066004, China

Received:2010-05-10 Revised:2011-01-05 Online:2011-06-15 Published:2011-06-15
Supported by:
Project supported by the National Key Basic Research Special Foundation of China (Grant No. 2010CB327605), the National High-Technology Research and Development Program of China (Grant No. 2009AA01Z220), the Key Grant of the Chinese Ministry of Education (Grant No. 109015), the Discipline Co-construction Project of Beijing Municipal Commission of Education (Grant No. YB20081001301), the Open Fund of Key Laboratory of Information Photonics and Optical Communications (Beijing University of Posts and Telecommunications), Ministry of Education, and the Specialized Research Fund for the Doctoral Program of Beijing University of Posts and Telecommunications (Grant No. CX201023).

摘要/Abstract

摘要： This paper theoretically investigates the dependence of leaky mode coupling between inner core fundamental mode and outer core defect mode on phase and loss matching in pure silica dual-core photonic crystal fibres with the multi-pole method. The complete mode coupling can take place when both the phase and loss matching conditions are satisfied at the avoided anti-crossing wavelength. It shows the influences of cladding structure parameters including the diameters of cladding air holes d₁, diameters of outer core holes d₂ and hole to hole pitch Λ on the characteristics of leaky modes coupling. The coupled-mode theory is used to analyse the mode transition characteristics and the complete coupling can be clearly indicated by comparing the real and imaginary parts of propagation constant of the leaky modes.

关键词: dual-core photonic crystal fibres, complete leaky mode coupling, multi-pole method, coupled-mode theory

Abstract: This paper theoretically investigates the dependence of leaky mode coupling between inner core fundamental mode and outer core defect mode on phase and loss matching in pure silica dual-core photonic crystal fibres with the multi-pole method. The complete mode coupling can take place when both the phase and loss matching conditions are satisfied at the avoided anti-crossing wavelength. It shows the influences of cladding structure parameters including the diameters of cladding air holes d₁, diameters of outer core holes d₂ and hole to hole pitch $\varLambda$ on the characteristics of leaky modes coupling. The coupled-mode theory is used to analyse the mode transition characteristics and the complete coupling can be clearly indicated by comparing the real and imaginary parts of propagation constant of the leaky modes.

Key words: dual-core photonic crystal fibres, complete leaky mode coupling, multi-pole method, coupled-mode theory

中图分类号: (Electromagnetic wave propagation; radiowave propagation)

41.20.Jb

42.81.-i (Fiber optics) 42.81.Dp (Propagation, scattering, and losses; solitons)

苑金辉, 余重秀, 桑新柱, 张锦龙, 周桂耀, 侯蓝田. Complete leaky mode coupling in dual-core photonic crystal fibre based on the coupled-mode theory[J]. 中国物理B, 2011, 20(6): 64101-064101.

Yuan Jin-Hui(苑金辉), Yu Chong-Xiu(余重秀), Sang Xin-Zhu(桑新柱), Zhang Jin-Long(张锦龙), Zhou Gui-Yao(周桂耀), and Hou Lan-Tian(侯蓝田). Complete leaky mode coupling in dual-core photonic crystal fibre based on the coupled-mode theory[J]. Chin. Phys. B, 2011, 20(6): 64101-064101.

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Complete leaky mode coupling in dual-core photonic crystal fibre based on the coupled-mode theory

Complete leaky mode coupling in dual-core photonic crystal fibre based on the coupled-mode theory

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