III-nitride-based waveguides for ultrafast all-optical signal processing at 1.55 μm
Authors
Monteagudo Lerma, LauraIdentifiers
Permanent link (URI): http://hdl.handle.net/10017/28177DOI: 10.1002/pssa.201532810
ISSN: 1862-6300
Publisher
Wiley
Date
2016-05-01Funders
Ministerio de Economía y Competitividad
Comunidad de Madrid
Universidad de Alcalá
European Commission
Bibliographic citation
Physica Status Solidi (A) Applications and Materials Science, 213 (5), pp. 1269-1275.
Keywords
All-optical signal processing
III-nitrides
Nonlinear optics
Optical waveguides
Project
info:eu-repo/grantAgreement/MINECO//TEC2012-37958-C02-01/ES/TECNOLOGIAS DE SEGURIDAD CIVIL BASADAS EN FIBRA OPTICA/
info:eu-repo/grantAgreement/MINECO//TEC2012-37958-C02-02/ES/TECNOLOGIAS DE FIBRA OPTICA PARA LA SEGURIDAD CIVIL/
info:eu-repo/grantAgreement/EC/FP7/331745/EU/Solar cells based on InGaN nanostructures on silicon/Solarin
info:eu-repo/grantAgreement/EC/FP7/278428/EU/GaN Quantum Devices for T-Ray Sources/TeraGaN
info:eu-repo/grantAgreement/CAM//S2009%2FMIT2790/ES/Sensores e INstrumentación en tecnologías FOTÓNicas/SINFOTON
info:eu-repo/grantAgreement/CAM//S2009%2FESP1781/ES//FACTOTEM2
info:eu-repo/grantAgreement/UAH//CCG2013%2FEXP-052
Document type
info:eu-repo/semantics/article
Version
info:eu-repo/semantics/acceptedVersion
Publisher's version
http://dx.doi.org/10.1002/pssa.201532810Access rights
info:eu-repo/semantics/openAccess
Abstract
We present an overview of the recently developed III-nitride-based optical waveguides for application in ultrafast signal processing at telecom wavelengths. We focus on different active and passive optical devices for further implementation within all-optical integrated circuits. Optical waveguides based on GaN/AlN quantum dots have been demonstrated to act as saturable absorbers requiring ∼3 pJ of input pulse energy to reach +3 dB transmittance contrast for TM-polarized light. On the contrary, sputtered-InN-based devices show -3 dB transmittance contrast associated to two-photon absorption for input pulse energies of ∼1 pJ, making them suitable to act as highly-efficient reverse saturable absorbers. Finally, the passive optical nature of waveguides based on sputtered AlN at 1.55 μm makes them suitable for further connections between different III-nitride-based active devices. Similar to the development of electronic integrated circuits, photonic integrated circuits are being widely investigated to implement active and passive optical functions in different material platforms. III-nitrides on sapphire substrates emerge as efficient all-optical solutions within the photonic integrated circuit presenting high nonlinear behavior and ultrafast response. These heterostructures make possible the full exploitation of the optical fiber bandwidth which is highly required in today's globalized world. © 2015 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.
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