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Slow light bimodal interferometry in onedimensional photonic crystal waveguides

Light(Science & Applications) 2021年第2期10卷 154-165页

作者： Luis Torrijos-Morán amadeu griol Jaime García-Rupérez Nanophotonics Technology Center Universitat Politècnica de Valencia46022 ValenciaSpain

Strongly influenced by the advances in the semiconductor industry,the miniaturization and integration of optical circuits into smaller devices has stimulated considerable research efforts in recent *** other structures,integrated interferometers play a prominent role in the development of photonic devices for on-chip applications ranging from optical communication networks to point-of-care analysis ***,it has been a longstanding challenge to design extremely short interferometer schemes,as long interaction lengths are typically required for a complete modulation *** approaches,including novel materials or sophisticated configurations,have been proposed to overcome some of these size limitations but at the expense of increasing fabrication complexity and ***,we demonstrate for the first time slow light bimodal interferometric behaviour in an integrated single-channel one-dimensional photonic *** proposed structure supports two electromagnetic modes of the same polarization that exhibit a large group velocity ***,an over 20-fold reduction in the higher-order-mode group velocity is experimentally shown on a straightforward all-dielectric bimodal structure,leading to a remarkable optical path reduction compared to other conventional ***,we experimentally demonstrate the significant performance improvement provided by the proposed bimodal photonic crystal interferometer in the creation of an ultra-compact optical modulator and a highly sensitive photonic sensor.

关键词： interferometer polarization modulator

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On-chip wireless silicon photonics: from reconfigurable interconnects to lab-on-chip devices

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Light(Science & Applications) 2017年第1期6卷 517-527页

作者： Carlos García-Meca Sergio Lechago Antoine Brimont amadeu griol Sara Mas Luis Sánchez Laurent Bellieres Nuria S Losilla Javier Martí Nanophotonics Technology Center Universitat Politècnica de València46022 ValenciaSpain

Photonic integrated circuits are developing as key enabling components for high-performance computing and advanced networkon-chip,as well as other emerging technologies such as lab-on-chip sensors,with relevant applications in areas from medicine and biotechnology to *** demanding applications will require novel features,such as dynamically reconfigurable light pathways,obtained by properly harnessing on-chip optical *** this paper,we introduce a broadband,high directivity(4150),low loss and reconfigurable silicon photonics nanoantenna that fully enables on-chip radiation *** propose the use of these nanoantennas as versatile building blocks to develop wireless(unguided)silicon photonic devices,which considerably enhance the range of achievable integrated photonic *** examples of applications,we demonstrate 160 Gbit s−1 data transmission over mm-scale wireless interconnects,a compact low-crosstalk 12-port crossing and electrically reconfigurable pathways via optical beam ***,the realization of a flow micro-cytometer for particle characterization demonstrates the smart system integration potential of our approach as lab-on-chip devices.

关键词： integrated optics lab-on-a-chip devices nanoantenna sensing silicon photonics

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Radiationless anapole states in on-chip photonics

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Light(Science & Applications) 2021年第11期10卷 2161-2172页

作者： Evelyn Diaz-Escobar Thomas Bauer Elena Pinilla-Cienfuegos Angela I.Barreda amadeu griol L.Kuipers Alejandro Martinez Nanophotonics Technology Center Universitat Politecnica de ValènciaCamino de Vera s/n46022ValenciaSpain Department of Quantum Nanoscience Kavli Institute of NanoscienceDelft University of Technology2600 GADelftThe Netherlands Institute of Applied Physics Abbe Center of PhotonicsFriedrich Schiller University JenaAlbert-Einstein-Straße 1507745JenaGermany

High-index nanoparticles are known to support radiationless states called anapoles,where dipolar and toroidal moments interfere to inhibit scattering to the far *** order to exploit the striking properties arising from these interference conditions in photonic integrated circuits,the particles must be driven in-plane via integrated ***,we address the excitation of electric anapole states in silicon disks when excited on-chip at telecom *** contrast to normal illumination,we find that the anapole condition-identified by a strong reduction of the scattering-does not overlap with the near-field energy maximum,an observation attributed to retardation *** experimentally verify the two distinct spectral regions in individual disks illuminated in-plane from closely placed waveguide terminations via far-field and near-field *** finding has important consequences concerning the use of anapole states and interference effects of other Mie-type resonances in high-index nanoparticles for building complex photonic integrated circuitry.

关键词： scattering waveguide states

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