A 'poor man's approach' to modelling micro-structured optical fibres

被引：41

作者：

Riishede, J ^{[1
]}

Mortensen, NA

Lægsgaard, J

机构：

[1] Tech Univ Denmark, Res Ctr COM, DK-2800 Lyngby, Denmark

[2] Crystal Fibre AS, Birkerod, Denmark

来源：

JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS | 2003年 / 5卷 / 05期

关键词：

micro-structured optical fibres; numerical modelling;

D O I：

10.1088/1464-4258/5/5/316

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Based on the scalar Helmholtz equation and the finite-difference approximation, we formulate a matrix eigenvalue problem for the calculation of propagation constants, beta(omega), in micro-structured optical fibres. The method is applied to index-guiding fibres as well as to air-core photonic bandgap fibres, and in both cases qualitatively correct results are found. The strength of this approach lies in its very simple numerical implementation and its ability to find eigenmodes at a specific eigenvalue, which is of great interest when modelling defect modes in photonic bandgap fibres.

引用

页码：534 / 538

页数：5

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