Abstract
Unlike periodic and random structures, many aperiodic structures exhibit unique hierarchical natures. Aperiodic photonic micro/nanostructures usually support optical multimodes due to either the rich variety of unit cells or their hierarchical structure. Mainly based on our recent studies on this topic, here we review some developments of aperiodic-order-induced multimode effects and their applications in optoelectronic devices. It is shown that self-similarity or mirror symmetry in aperiodic micro/nanostructures can lead to optical or plasmonic multimodes in a series of one-dimensional/two-dimensional (1D/2D) photonic or plasmonic systems. These multimode effects have been employed to achieve optical filters for the wavelength division multiplex, open cavities for light–matter strong coupling, multiband waveguides for trapping “rainbow”, high-efficiency plasmonic solar cells, and transmission-enhanced plasmonic arrays, etc. We expect that these investigations will be beneficial to the development of integrated photonic and plasmonic devices for optical communication, energy harvesting, nanoantennas, and photonic chips.
Highlights
Motivated by the discovery of quasicrystal [1], much research has been conducted on aperiodic systems in recent years [2,3,4,5,6,7,8,9,10,11]
Optoelectronic devices based on the multimode effects, which can be induced by aperiodic order, have attracted much attention because of their potential in optical communication [12,13], energy harvesting [14], nanoantennas [15], and so on
In order to design optoelectronic devices based on aperiodic structures, proper aperiodic lattices should be chosen
Summary
Motivated by the discovery of quasicrystal [1], much research has been conducted on aperiodic systems in recent years [2,3,4,5,6,7,8,9,10,11]. Unlike periodic and random structures, many aperiodic structures exhibit unique hierarchical natures. Aperiodic order can be artificially imposed during sample fabrication and can be precisely controlled. These properties have opened a new avenue for the design of novel devices based on aperiodic structures. Optoelectronic devices based on the multimode effects, which can be induced by aperiodic order, have attracted much attention because of their potential in optical communication [12,13], energy harvesting [14], nanoantennas [15], and so on. Several optoelectronic devices have been designed on the basis of the multimode effects in either one-dimensional (1D) or two-dimensional (2D) aperiodic structures
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