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Fully integrated and broadband Si-rich silicon nitride wavelength converter based on Bragg scattering intermodal four-wave mixing

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Photonics Research 2024年第3期12卷 I0001-I0010页

作者： VALERIO VITALI THALÍA DOMÍNGUEZ BUCIO HAO LIU JOSÉMANUEL LUQUE GONZÁLEZ FRANCISCO JURADO-ROMERO ALEJANDRO ORTEGA-MOÑUX GLENN CHURCHILL JAMES C.GATES JAMES HILLIER NIKOLAOS KALFAGIANNIS DANIELE MELATI JENS H.SCHMID ILARIA CRISTIANI pavel cheben J.GONZALO WANGÜEMERT-PÉREZ ÑIGO MOLINA-FERNÁNDEZ FREDERIC GARDES COSIMO LACAVA PERIKLIS PETROPOULOS Optoelectronics Research Centre University of SouthamptonSouthampton SO171BJUK 2ElectricalComputer and Biomedical Engineering DepartmentUniversity of PaviaPavia 27100Italy 3Telecommunication Research Institute(TELMA)Universidad de MálagaCEI Andalucı´a TECHE.T.S.I.Telecomunicación29010 MálagaSpain 4School of Science and TechnologyNottingham Trent UniversityNottingham NG118NSUK 5Department of Electrical EngineeringEindhoven University of TechnologyEindhoven 5600 MBThe Netherlands 6Department of Materials Science and EngineeringUniversity of IoanninaIoannina 45110Greece 7Centre de Nanosciences et de NanotechnologiesUniversitéParis-SaclayCNRS91120 PalaiseauFrance 8Advanced Electronics and Photonics Research CenterNational Research Council CanadaOttawaOntario K1A 0R6Canada

Intermodal four-wave mixing(FWM)processes have recently attracted significant interest for all-optical signal processing applications thanks to the possibility to control the propagation properties of waves exciting distinct spatial modes of the same *** allows,in principle,to place signals in different spectral regions and satisfy the phase matching condition over considerably larger bandwidths compared to intramodal ***,the demonstrations reported so far have shown a limited bandwidth and suffered from the lack of on-chip components designed for broadband manipulation of different *** demonstrate here a silicon-rich silicon nitride wavelength converter based on Bragg scattering intermodal FWM,which integrates mode conversion,multiplexing and de-multiplexing functionalities *** system enables wavelength conversion between pump waves and a signal located in different telecommunication bands(separated by 60 nm)with a 3 dB bandwidth exceeding 70 nm,which represents,to our knowledge,the widest bandwidth ever achieved in an intermodal FWM-based system.

关键词： scattering pump modal

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Next-generation siliconphotonics:introduction

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Photonics Research 2022年第10期10卷 I0001-I0003页

作者： DAOXIN DAI DI LIANG pavel cheben State Key Laboratory for Modern Optical Instrumentation College of Optical Science and EngineeringInternational Research Center for Advanced PhotonicsZhejiang UniversityZijingang CampusHangzhou 310058China Hewlett Packard Labs Hewlett Packard EnterprisePalo AltoCalifornia 94304USA National Research Council of Canada OttawaOntario K1A 0R6Canada

In the past decade,silicon photonics has been making tremendous progress in terms of device functionality and performances as well as circuit integration for many practical applications ranging from communication,sensing,and information *** special issue,including four review articles and nine research articles,aims to provide a comprehensive overview of this exciting *** offer a collective summary of recent progresses,in-depth discussions of the state-of-the-art,and insights into forthcoming developments that are well poised to drive silicon photonics technology into its next generation.

关键词： collective discussions photonics

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Polarization-independent multimode interference coupler with anisotropy-engineered bricked metamaterial

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Photonics Research 2022年第4期10卷 I0001-I0009页

作者： Carlos Perez-Armenta Alejandro Ortega-Monux Jose Manuel Luque-Gonzalez Robert Halir Pedro J.Reyes-Iglesias Jens Schmid pavel cheben Inigo Molina-Fernandez J.Gonzalo Wanguemert-Perez Telecommunication Research Institute(TELMA) Universidad de MalagaCEI Andalucia TECHE.T.S.I.Telecomunicacion29010 MalagaSpain Bionand Center for Nanomedicine and Biotechnology Parque Tecnologico de AndaluciaMalaga 29590Spain National Research Council Canada OttawaOntario K1A 0R6Canada

Many applications, including optical multiplexing, switching, and detection, call for low-cost and broadband photonic devices with polarization-independent operation. While the silicon-on-insulator platform is well positioned to fulfill most of these requirements, its strong birefringence hinders the development of polarizationagnostic devices. Here we leverage the recently proposed bricked metamaterial topology to design, for the first time, to our knowledge, a polarization-independent 2 × 2 multimode interference coupler using standard 220 nm silicon thickness. Our device can be fabricated with a single etch step and is optimized for the O-band,covering a wavelength range of 160 nm with excess loss, polarization-dependent loss, and imbalance below 1 dB and phase errors of less than 5°, as demonstrated with full three-dimensional finite-difference time-domain simulations.

关键词： polarization multimode multiplexing

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Ultra-broadband nanophotonic phase shifter based on subwavelength metamaterial waveguides

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Photonics Research 2020年第3期8卷 359-367页

作者： DAVID GONZáLEZ-ANDRADE JOSéMANUEL LUQUE-GONZáLEZ J.GONZALO WANGüEMERT-PéREZ ALEJANDRO ORTEGA-MONUX pavel cheben íNIGO MOLINA-FERNáNDEZ AITOR V.VELASCO Instituto deóptica Daza de Valdés Consejo Superior de Investigaciones Cientificas(CSIC)Madrid 28006Spain Departamento de Ingenieria de Comunicaciones ETSI TelecomunicaciónUniversidad de MálagaMálaga 29071Spain National Research Council Canada Ottawa K1A 0R6Canada Bionand Center for Nanomedicine and Biotechnology Parque Tecnológico de AndaluciaMálaga 29590Spain

Optical phase shifters are extensively used in integrated optics not only for telecom and datacom applications but also for sensors and quantum *** various active solutions have been demonstrated,progress in passive phase shifters is still *** we present a new type of ultra-broadband 90°phase shifter,which exploits the anisotropy and dispersion engineering in subwavelength metamaterial *** Floquet–Bloch calculations predict a phase-shift error below 1.7°over an unprecedented operation range from 1.35 to 1.75μm,i.e.,400 nm bandwidth covering the E,S,C,L,and U telecommunication *** flat spectral response of our phase shifter is maintained even in the presence of fabrication errors up to 20 nm,showing greater robustness than conventional *** device was experimentally demonstrated using standard220 nm thick SOI wafers,showing a fourfold reduction in the phase variation compared to conventional phase shifters within the 145 nm wavelength range of our measurement *** proposed subwavelength engineered phase shifter paves the way for novel photonic integrated circuits with an ultra-broadband performance.

关键词： waveguides phase maintained

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