Numerical aperture of single-mode photonic crystal fibers

被引：70

作者：

Mortensen, NA ^{[1
]}

Folken, JR ^{[1
]}

Skovgaard, PMW ^{[1
]}

Broeng, J ^{[1
]}

机构：

[1] Crystal Fiber AS, DK-3460 Birkerod, Denmark

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2002年 / 14卷 / 08期

关键词：

Gaussian approximation; numerical aperture; photonic crystal fiber;

D O I：

10.1109/LPT.2002.1021980

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We consider the problem of radiation into free space from the end-facet of a single-mode photonic crystal fiber (PCF). We calculate the numerical aperture NA = sin theta from the half-divergence angle theta similar to tan(-1) (lambda/piw) with piw(2) being the effective area of the mode in the PCE For the fiber first presented by Knight etaL, we find a NA similar to 0.07 which compares to standard fiber technology. We also study the effect of different hole sizes and demonstrate that the PCF technology provides a large freedom for NA engineering. Comparing to experiments we rind good agreement.

引用

页码：1094 / 1096

页数：3

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