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Proceedings Paper

Large area mode field photonic crystal fiber design
Author(s): Shuqin Guo; Wensheng An; Kang Wang; Guangxin Zhu; Zichun Le
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Paper Abstract

A novel design method about photonic crystal fiber (PCF) with large area model field (LAMF) is demonstrated. Different from ordinarily design that the core of PCF formed by missing one air holes in the center of section, many air holes distributed in heartland all together come into being the core region. Air holes are arranged regularly in core region and outer cladding regions according to different periodical character, respectively. The effective refractive index (n eff ) of core region should be higher than cladding region because of total internal reflection (TIR) requirement. In this paper, two kinds of typical scheme are offered to realize LAMF-PCF. First, Λ, the spacing of neighboring air holes in whole section is fixed, once the radius of air holes in the core region rc is smaller than the cladding air holes rcla, LAMF-PCF will be formed. The modal area only lessens a little as rc is reduced. Especially, optimal size of rc can nearly make MFA insensitive to wavelength. On the contrary, dispersion parameter of PCF will take place visible change along with rc reduced, and ultra-flattened dispersion character can be realized when rc is optimized. Another method of designing LAMF-PCF is keeping all air holes uniform in the whole section of PCF, but the space of neighboring air holes in the core region Λc is longer than the cladding region Λcla, so neff of core region is higher than the cladding region and TIR can take place.

Paper Details

Date Published: 5 December 2005
PDF: 8 pages
Proc. SPIE 6019, Passive Components and Fiber-based Devices II, 60193Y (5 December 2005); doi: 10.1117/12.631897
Show Author Affiliations
Shuqin Guo, Zhejiang Univ. of Technology (China)
Shanghai Univ. (China)
Wensheng An, UTStarcom Telecom Co., Ltd. (China)
Kang Wang, Zhejiang Univ. of Technology (China)
Guangxin Zhu, Zhejiang Univ. of Technology (China)
Zichun Le, Zhejiang Univ. of Technology (China)


Published in SPIE Proceedings Vol. 6019:
Passive Components and Fiber-based Devices II
Yan Sun; Jianping Chen; Sang Bae Lee; Ian H. White, Editor(s)

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