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Article Dans Une Revue OSA CONTINUUM Année : 2020

Excitation of Symmetry Protected Modes in a Lithium Niobate Membrane Photonic Crystal for Sensing Applications

Résumé

Our theoretical study reveals the opportunity to develop an electric field sensor based on the exploitation of the symmetry protected mode (SPM) that we excite within an electro-optical material, namely lithium niobate (LN). The SPM consists of a dark Fano-like resonance that results from the combination of a discrete Bloch mode of a photonic crystal (PhC) with a continuum mode of a membrane, both of them made in LN. The dark character is linked to the structure geometry having a high degree of symmetry. The SPM excitation is then made possible thanks to an illumination under small oblique incidence, which breaks the symmetry of the configuration. This results in several ultra-sensitive and tunable Fano-like resonances with high quality factors up to 10
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Dates et versions

hal-03020561 , version 1 (23-11-2020)

Identifiants

  • HAL Id : hal-03020561 , version 1

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Ayman Hoblos, Miguel Angel Suarez, Nadège Courjal, Maria-Pilar Bernal-Artajona, Fadi Baida. Excitation of Symmetry Protected Modes in a Lithium Niobate Membrane Photonic Crystal for Sensing Applications. OSA CONTINUUM, 2020, 3 (11), pp.3008-3018. ⟨hal-03020561⟩
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