Fano interference governs wave transport in disordered systems

被引：86

作者：

Poddubny, Alexander N. ^{[1
,2
]}

Rybin, Mikhail V. ^{[1
,2
]}

Limonov, Mikhail F. ^{[1
,2
]}

Kivshar, Yuri S. ^{[1
,3
]}

机构：

[1] Natl Res Univ Informat Technol Mech & Opt ITMO, St Petersburg 197101, Russia

[2] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia

[3] Australian Natl Univ, Nonlinear Phys Ctr, Res Sch Phys & Engn, Canberra, ACT 0200, Australia

来源：

NATURE COMMUNICATIONS | 2012年 / 3卷

基金：

俄罗斯基础研究基金会; 澳大利亚研究理事会;

关键词：

FIBONACCI QUASI-CRYSTALS; OPAL PHOTONIC CRYSTALS; ANDERSON LOCALIZATION; OPTICAL-PROPERTIES; BAND-GAPS; STATES; LIGHT; METAMATERIALS; PROPAGATION; RESONANCES;

D O I：

10.1038/ncomms1924

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Light localization in disordered systems and Bragg scattering in regular periodic structures are considered traditionally as two entirely opposite phenomena: disorder leads to degradation of coherent Bragg scattering whereas Anderson localization is suppressed by periodicity. Here we reveal a non-trivial link between these two phenomena, through the Fano interference between Bragg scattering and disorder-induced scattering, that triggers both localization and delocalization in random systems. We find unexpected transmission enhancement and spectrum inversion when the Bragg stop-bands are transformed into the Bragg pass-bands solely owing to disorder. Fano resonances are always associated with coherent scattering in regular systems, but our discovery of disorder-induced Fano resonances may provide novel insights into many features of the transport phenomena of photons, phonons, and electrons. Owning to ergodicity, the Fano resonance is a fingerprint feature for any realization of the structure with a certain degree of disorder.

引用

页数：10

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