Hypersensitive Transport in Photonic Crystals with Accidental Spatial Degeneracies

Makri, Eleana; Smith, K.; Chabanov, A. A.; Vitebskiy, Ilya

doi:10.1038/srep22169

Cited by 10 publications

(4 citation statements)

References 26 publications

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“…This circumstance allows to maintain the SAD condition, along with the strong resonant transmission, within the broad temperature range. By comparison, in the case of a gradual temperature dependence of the refractive index [10], the SAD conditions and the corresponding resonant transmittance of the metal-dielectric cavity can be achieved only at a certain temperature. Yet another possibility is to replace the PCM with an optical material displaying strong Kerr nonlinearity.…”

Section: Photonic Crystal Design -mentioning

confidence: 99%

“…Indeed, if instead of the PCM we used a material with a temperature-dependent refraction (as was the case in Ref. [10]), then the SAD and the related low-intensity resonant transmission could be realized only at a particular temperature. By comparison, the nearly binary nature of some practically available PCMs, such as vanadium oxides, allows for the low-intensity resonant transmission over a relatively broad range of ambient temperatures.…”

mentioning

confidence: 99%

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Light-induced optical switching in an asymmetric metal-dielectric microcavity with phase-change material

Thomas

Chabanov

Vitebskiy

2019

EPL

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We propose an infrared power switch based on an asymmetric high-Q microcavity incorporating a metallic nanolayer in close proximity to a layer made of a phase-change material (PCM). The microcavity is designed so that when the PCM layer is in the low-temperature phase, the metallic nanolayer coincides with a nodal plane of the resonant electric field component, to allow a high resonant transmittance. As the light intensity exceeds a certain threshold, lightinduced heating of the PCM layer triggers the phase transition accompanied by an abrupt change in its refractive index in the vicinity of the transition temperature. The latter results in a shift of the nodal plane away from the metallic nanolayer, rendering the entire microcavity highly reflective over a broad frequency range. The nearly binary nature of the PCM refractive index allows for the low-intensity resonant transmission over a broad range of ambient temperatures below the transition point.

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Section: Photonic Crystal Design -mentioning

confidence: 99%

mentioning

confidence: 99%

Light-induced optical switching in an asymmetric metal-dielectric microcavity with phase-change material

Thomas

Chabanov

Vitebskiy

2019

EPL

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“…incorporating a nonlinear [21,22] or a phase-change material (PCM) [23,24]. At low incident intensities, transmittance of the photonic structure is at its maximum due to resonant transmission via a localized mode in photonic bandgap.…”

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confidence: 99%

A reflective mm-wave photonic limiter

Kononchuk,

Suwunnarat,

Hilario

et al. 2020

Preprint

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Millimeter wave (mm-wave) communications and radar receivers capable of processing small signals must be protected from high-power signals, which can damage sensitive receiver components.Many of these systems arguably can be protected by using photonic limiting techniques, in addition to electronic limiting circuits in receiver front-ends. Here we demonstrate, experimentally and numerically, a free-space, reflective mm-wave limiter based on a multilayer structure involving a nanolayer of vanadium dioxide (VO 2 ), experiencing a thermal insulator-to-metal transition. The multilayer acts as a variable reflector, controlled by the input power. At low input power levels, VO 2 remains dielectric, and the multilayer exhibits resonant transmittance. When the input power exceeds a threshold level, the emerging metallic phase renders the multilayer highly reflective while dissipating a small portion of the input power without damage to the limiter. In the case of a Gaussian beam, the limiter has a nearly constant output above the limiting threshold input.Millimeter wave (mm-wave) is a valuable network and sensing technology which utilizes frequency bands in between 30 GHz and 300 GHz [1][2][3]. Operating in this spectral range has important advantages over lower frequency bands. Not only do mm-waves allow larger bandwidths to transmit data at multi-gigabit speeds [4], they also provide higher spatial resolution due to shorter wavelengths, which can be exploited for a variety of accurate sensing applications [5]. Another advantage of mm-wavelengths is that the size of system components required to receive and process mm-wave signals is small enough to allow using standard optical techniques [6][7][8][9][10][11][12].Optical limiting is a technique to protect photosensitive devices from damage caused by intense optical radiation [13,14]. Optical limiters are therefore designed to block highintensity laser radiation while transmitting low-intensity light. Most passive optical limiters utilize materials with nonlinear absorption, which are transparent to low-intensity light but turn opaque if the light intensity exceeds a certain (limiting) threshold level [15][16][17].However, a typical passive limiter absorbs a significant portion of high-level radiation, which can cause overheating and damage to the limiter itself [14,18].To overcome this problem, the concept of a reflective photonic limiter, which reflects rather than absorbs high-intensity radiation, has been introduced [19][20][21]. A passive reflective photonic limiter involves a photonic bandgap structure, such as a multilayer cavity,

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“…This has been theorized in a symmetric structure in ref. 21. by Makri et al They utilize a nodal point in the electric field to make a thin metal layer transparent to the incident wave for one resonant frequency.…”

Section: Discussionmentioning

confidence: 99%

Asymmetric Transmission In Photonic Structures With Phase-Change Components

Antonellis¹

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Hypersensitive Transport in Photonic Crystals with Accidental Spatial Degeneracies

Cited by 10 publications

References 26 publications

Light-induced optical switching in an asymmetric metal-dielectric microcavity with phase-change material

Light-induced optical switching in an asymmetric metal-dielectric microcavity with phase-change material

A reflective mm-wave photonic limiter

Asymmetric Transmission In Photonic Structures With Phase-Change Components

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