Cut-off analysis of 19-cell Yb-doped double-cladding rod-type photonic crystal fibers

被引：27

作者：

Poli, F. ^{[1
]}

Coscelli, E. ^{[1
]}

Alkeskjold, T. T. ^{[2
]}

Passaro, D. ^{[1
]}

Cucinotta, A. ^{[1
]}

Leick, L. ^{[2
]}

Broeng, J. ^{[2
]}

Selleri, S. ^{[1
]}

机构：

[1] Univ Parma, Informat Engn Dept, I-43124 Parma, Italy

[2] NKT Photon AS, DK-3460 Birkerod, Denmark

来源：

OPTICS EXPRESS | 2011年 / 19卷 / 10期

关键词：

D O I：

10.1364/OE.19.009896

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Yb-doped double-cladding large mode area rod-type photonic crystal fibers are a key component for power scaling in fiber laser systems. Recently, designs with 19-cell core defect, that is with 19 missing air-holes in the center of the photonic crystal cladding, have been proposed, with reported core diameter up to 100 mu m. In this paper an analysis of the cut-off wavelength of the first high-order mode in such low-NA fibers is reported, accounting for different approaches for the definition of the cladding effective index. Results have shown that taking into account the finite fiber cross-section and considering the first cladding mode of the actual fiber is mandatory to obtain a correct estimate of the cut-off wavelength. (C) 2011 Optical Society of America

引用

页码：9896 / 9907

页数：12

共 17 条

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