In‐Plane Photonic Crystal Devices using Fano Resonances

Bekele, Dagmawi Alemayehu; Yu, Yi; Yvind, Kresten; Mørk, Jesper

doi:10.1002/lpor.201900054

Cited by 51 publications

(20 citation statements)

References 97 publications

(245 reference statements)

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“…Recently, the Fano laser has been also experimentally demonstrated to possess ultra-narrow linewidth [101]. Furthermore, we note that the Fano mirror lends itself to various optical signal processing applications, which are thoroughly reviewed in [102].…”

Section: Fano Lasermentioning

confidence: 92%

“…The most general implementation of the Fano mirror on the PhC platform may include a blocking air hole in the waveguide below the nanocavity (a so-called PTE, partially transmitting element) [104]. This PTE renders the mirror spectrum asymmetric with respect to the nanocavity resonance frequency, which can be useful in various applications [100,102]. By displacing the PTE from the mirror plane, the parity of the resonance can also be controlled, thereby blue or red-shifting the reflection maximum as compared to the minimum.…”

Section: Fano Mirrormentioning

confidence: 99%

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Modal Properties of Photonic Crystal Cavities and Applications to Lasers

et al. 2021

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Photonic crystal cavities enable strong light–matter interactions, with numerous applications, such as ultra-small and energy-efficient semiconductor lasers, enhanced nonlinearities and single-photon sources. This paper reviews the properties of the modes of photonic crystal cavities, with a special focus on line-defect cavities. In particular, it is shown how the fundamental resonant mode in line-defect cavities gradually turns from Fabry–Perot-like to distributed-feedback-like with increasing cavity size. This peculiar behavior is directly traced back to the properties of the guided Bloch modes. Photonic crystal cavities based on Fano interference are also covered. This type of cavity is realized through coupling of a line-defect waveguide with an adjacent nanocavity, with applications to Fano lasers and optical switches. Finally, emerging cavities for extreme dielectric confinement are covered. These cavities promise extremely strong light–matter interactions by realizing deep sub-wavelength mode size while keeping a high quality factor.

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Section: Fano Lasermentioning

confidence: 92%

Section: Fano Mirrormentioning

confidence: 99%

Modal Properties of Photonic Crystal Cavities and Applications to Lasers

et al. 2021

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“…The narrow bandwidth and enhanced near-field endow plasmonic Fano resonance wide applications in areas of plasmonic sensors, nanolasers, metamaterials, optoelectronic devices, etc. [10,26,[104][105][106][107]…”

Section: Plasmonic Fano Resonancementioning

confidence: 99%

Metallic Plasmonic Array Structures: Principles, Fabrications, Properties, and Applications

et al. 2021

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can efficiently couple light into nanostructures and confine light below diffraction limit. [8,9] With these properties, plasmonics have found important applications in various fields such as plasmonic sensing, [10][11][12][13] plasmon-enhanced spectroscopies, [14][15][16] plasmonic nanolasing, [17][18][19] and perfect light absorption. [20,21] The optical performances of plasmonic nanostructures are highly dependent on the resonance modes that they support. Generally, there are two fundamental surface plasmonic modes: localized surface plasmon resonance (LSPR) and propagating surface plasmon polaritons (SPP). [22,23] LSPR can be observed on metal nanoparticles. [22,24,25] However, the strong radiative damping of metal nanoparticles results in broad resonant spectra, severely limiting the applications of metal nanoparticles in fields such as plasmonic sensing and nanolasing. [26,27] SPP is usually generated at the interface between metal and dielectric with the assistance of a high refractive index prism or by constructing a grating structure. [23,28,29] The near-field decay length of SPP mode is 40-50 times larger than that of LSPR mode. [23] Therefore, SPP structures usually provide higher bulk sensitivity when used for plasmonic sensing. [23] However, it is difficult to achieve a flexible tuning of SPP mode only by above configurations. In addition, single resonance mode also greatly limits the applications of the devices.According to the plasmon hybridization theory, coupling of different resonance modes can endow plasmonic nanostructures with richer optical properties and thereby improve their performance and broaden their application fields. [30][31][32] Metallic plasmonic arrays have been demonstrated to be a powerful platform for the simultaneous excitation of the above two basic types of plasmonic modes. [33,34] In addition, they can also support many other types of resonance modes such as Fabry-Pérot (F-P) cavity mode, surface lattice resonance (SLR), and plasmonic Fano resonance due to the flexibility in structure design. [32,[35][36][37][38] These modes together give the nanostructured plasmonic arrays with attractive performance unattainable by using individual LSPR or SPP mode. Benefited from the abundant optical properties, nanostructured metallic plasmonic arrays can be utilized in a fashion of "device-by-design." For example, for plasmonic sensing, a plasmonic array with a narrow spectrum can be fabricated for an excellent sensing performance; [23,26] while for surface-enhanced Raman spectroscopy (SERS) detection, a plasmonic array with a relatively broad spectrum is needed to achieve local field enhancement and radiative enhancement simultaneously. [39,40] Therefore, the investigation The vast development of nanofabrication has spurred recent progress for the manipulation of light down to a region much smaller than the wavelength. Metallic plasmonic array structures are demonstrated to be the most powerful platform to realize controllable light-matter interactions and have found wide application...

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“…with a local hole impurity in a photonic crystal waveguide (similar to that depicted in Fig. 1(a)), can be used to exploit linear and nonlinear scattering effects more efficiently, with potential applications for switching, sensing, and pulse shaping [24][25][26]. This improvement is due to Fano interference, which is characterized by a highly asymmetric transmission lineshape originating from combining a discrete mode system with a continuum of modes [27][28][29].…”

Section: ( ( IImentioning

confidence: 99%

Few-photon transport in Fano-resonance waveguide geometries

et al. 2020

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We present a theoretical study of Fano interference effects in few-photon transport. Under appropriate conditions, a local defect in an optical waveguide induces a highly asymmetric transmission lineshape, characteristic of Fano interference. For a two-level emitter placed adjacent to such a defect, here modeled as a partially transmitting element, we find an analytical expression for the full time evolution of single-photon wavepackets and the emitter excitation probability. We show how the partially transmitting element affects the emitter lifetime and shifts the spectral position of the effective system resonances. Using input-output formalism, we determine the single and two-photon S-matrices for both a two-level emitter and a cavity-emitter system coupled to a waveguide with a partially transmitting element. We show how the Fano interference effect can be exploited for the implementation of a Hong-Ou-Mandel switch in analogy with a tunable linear or nonlinear beam splitter.

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In‐Plane Photonic Crystal Devices using Fano Resonances

Cited by 51 publications

References 97 publications

Modal Properties of Photonic Crystal Cavities and Applications to Lasers

Modal Properties of Photonic Crystal Cavities and Applications to Lasers

Metallic Plasmonic Array Structures: Principles, Fabrications, Properties, and Applications

Few-photon transport in Fano-resonance waveguide geometries

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