Identification of Bloch-modes in hollow-core photonic crystal fiber cladding

被引：63
作者：
Couny, F. [1 ]
Benabid, F.
Roberts, P. J.
Burnett, M. T.
Maier, S. A.
机构：
[1] Univ Bath, Dept Phys, Ctr Photon & Photon Mat, Bath BA2 7AY, Avon, England
[2] Tech Univ Denmark, Dept Commun Opt & Mat, DK-2800 Lyngby, Denmark
来源：
OPTICS EXPRESS | 2007年 / 15卷 / 02期
基金：
英国工程与自然科学研究理事会;
关键词：
D O I：
10.1364/OE.15.000325
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report on the experimental visualization of the cladding Bloch-modes of a hollow-core photonic crystal fiber. Both spectral and spatial field information is extracted using the approach, which is based on measurement of the near-field and Fresnel-zone that results after propagation over a short length of fiber. A detailed study of the modes near the edges of the band gap shows that it is formed by the influence of three types of resonator: the glass interstitial apex, the silica strut which joins the neighboring apexes, and the air hole. The cladding electromagnetic field which survives the propagation is found to be spatially coherent and to contain contributions from just a few types of cladding mode. (c) 2007 Optical Society of America.
引用
收藏
页码：325 / 338
页数：14
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