Three-dimensional dielectric phoxonic crystals with network topology

Ma, Tian-Xue; Wang, Yan-Feng; Su, Xiao‐Xing

doi:10.1364/oe.21.002727

Cited by 31 publications

(25 citation statements)

References 24 publications

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“…For gold spheres with radius close to half a micron (see Figure 1F), the gaps are predicted at around 1550 nm for light and close to 10 GHz for sound [48]. Similar simultaneous complete phononic and photonic band gaps where also predicted for simple cubic lattices of dielectric spheres connected with dielectric cylinders [49]. Here we should note that by proper engineering of the incoming optical and elastic waves it is also possible to achieve simultaneous localization of the two fields inside partial gaps occurring for certain lattice direction and/or polarization [50].…”

Section: D Phoxonic Crystalssupporting

confidence: 69%

Modeling light-sound interaction in nanoscale cavities and waveguides

et al. 2014

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Abstract:The interaction of light and sound waves at the micro and nanoscale has attracted considerable interest in recent years. The main reason is that this interaction is responsible for a wide variety of intriguing physical phenomena, ranging from the laser-induced cooling of a micromechanical resonator down to its ground state to the management of the speed of guided light pulses by exciting sound waves. A common feature of all these phenomena is the feasibility to tightly confine photons and phonons of similar wavelengths in a very small volume. Amongst the different structures that enable such confinement, optomechanical or phoxonic crystals, which are periodic structures displaying forbidden frequency band gaps for light and sound waves, have revealed themselves as the most appropriate candidates to host nanoscale structures where the light-sound interaction can be boosted. In this review, we describe the theoretical tools that allow the modeling of the interaction between photons and acoustic phonons in nanoscale structures, namely cavities and waveguides, with special emphasis in phoxonic crystal structures. First, we start by summarizing the different optomechanical or phoxonic crystal structures proposed so far and discuss their main advantages and limitations. Then, we describe the different mechanisms that make light interact with sound, and show how to treat them from a theoretical point of view. We then illustrate the different photon-phonon interaction processes with numerical simulations in realistic phoxonic cavities and waveguides. Finally, we introduce some possible applications which can take enormous benefit from the enhanced interaction between light and sound at the nanoscale.

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Section: D Phoxonic Crystalssupporting

confidence: 69%

Modeling light-sound interaction in nanoscale cavities and waveguides

et al. 2014

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“…[45][46][47] In addition, we can also use the topology optimization to design PnC bandgaps with the ultra-low mid-frequencies for low frequency sound insulation. 60 Moreover, the topology optimization combined with the symmetry reduction may be suitable for the PxC bandgap engineering 34,[48][49][50][51][52][53][54][55][56][57][58] to construct more PxCs with a strong photon-phonon interaction. This interesting problem is the subject of our ongoing research.…”

Section: Conclusion Remarksmentioning

confidence: 99%

Reducing symmetry in topology optimization of two-dimensional porous phononic crystals

2015

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In this paper we present a comprehensive study on the multi-objective optimization of twodimensional porous phononic crystals (PnCs) in both square and triangular lattices with the reduced topology symmetry of the unit-cell. The fast non-dominated sorting-based genetic algorithm II is used to perform the optimization, and the Pareto-optimal solutions are obtained.The results demonstrate that the symmetry reduction significantly influences the optimized structures. The physical mechanism of the optimized structures is analyzed. Topology optimization combined with the symmetry reduction can discover new structures and offer new degrees of freedom to design PnC-based devices. Especially, the rotationally symmetrical structures presented here can be utilized to explore and design new chiral metamaterials.

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“…Maldovan et al [2,3] theoretically demonstrated the existence of photonic and phononic bandgaps in a two-dimensional (2D) photonic crystal (PTC) for the first time. Since then, several structures have been studied in order to demonstrate the opening of simultaneous PTBGs and PNBGs [4][5][6][7][8][9]. Different kinds of PXC-based devices have also been proposed, including PXC waveguides [10,11], sensors [12][13][14][15], mode converters [16], and diodes [17].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Guidance of Surface Acoustic and Surface Optical Waves in Phoxonic Crystal Slabs

Wang

Zhang

2017

Crystals

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Phoxonic crystals, which exhibit simultaneous phononic and photonic bandgaps, are promising artificial materials for optomechanical and acousto-optical devices. In this paper, simultaneous guidance of surface acoustic and surface optical waves in truncated phoxonic crystal slabs with veins is investigated using the finite element method. The phoxonic crystal slabs with veins can show dual large bandgaps of phononic and photonic even/odd modes. Based on the phononic and photonic bandgaps, simultaneous surface acoustic and optical modes can be realized by changing the surface geometrical configurations. Both acoustic and optical energies can be highly confined in the surface region. The effect of the surface structures on the dispersion relations of surface modes is discussed; by adjusting the surface geometrical parameters, dual single guided modes and/or slow acoustic and optical waves with small group velocity dispersions can be achieved. The group velocities are about 40 and 10 times smaller than the transverse velocity of the elastic waves in silicon and the speed of light in vacuum, respectively.

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Three-dimensional dielectric phoxonic crystals with network topology

Cited by 31 publications

References 24 publications

Modeling light-sound interaction in nanoscale cavities and waveguides

Modeling light-sound interaction in nanoscale cavities and waveguides

Reducing symmetry in topology optimization of two-dimensional porous phononic crystals

Simultaneous Guidance of Surface Acoustic and Surface Optical Waves in Phoxonic Crystal Slabs

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