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Sub-μm2 power splitters by using silicon hybrid plasmonic waveguides
KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, Zhejiang-KTH Joint Research Center of Photonics, JORCEP. Centre for Optical and Electromagnetic Research, State Key Laboratory for Modern Optical Instrumentation, Zhejiang University, Zijingang Campus, China.
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2011 (Engelska)Ingår i: Optics Express, ISSN 1094-4087, E-ISSN 1094-4087, Vol. 19, nr 2, s. 838-847Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Nano-scale power splitters based on Si hybrid plasmonic waveguides are designed by utilizing the multimode interference (MMI) effect as well as Y-branch structure. A three-dimensional finite-difference time-domain method is used for simulating the light propagation and optimizing the structural parameters. The designed 1×2 50:50 MMI power splitter has a nano-scale size of only 650 nm×530 nm. The designed Y-branch power splitter is also very small, i.e., about 900 nm×600 nm. The fabrication tolerance is also analyzed and it is shown that the tolerance of the waveguide width is much larger than±50 nm. The power splitter has a very broad band of over 500 nm. In order to achieve a variable power splitting ratio, a 2×2 two-mode interference coupler and an asymmetric Y-branch are used and the corresponding power splitting ratio can be tuned in the range of 97.1%:2.9%-1.7%:98.3% and 84%:16%-16%:84%, respectively. Finally a 1×4 power splitter with a device footprint of 1.9 μm×2.6 μm is also presented using cascaded Y-branches.

Ort, förlag, år, upplaga, sidor
Optical Society of America, 2011. Vol. 19, nr 2, s. 838-847
Nyckelord [en]
Broad bands, Fabrication tolerances, Multi-mode interference, Nano scale, Plasmonic waveguides, Power splitters, Power splitting ratio, Structural parameter, Two-mode interference, Variable power, Waveguide widths, Y-branch, Finite difference time domain method, Integrated optics, Nanostructured materials, Optical beam splitters, Plasmons, Waveguides, article, computer aided design, computer simulation, equipment, equipment design, instrumentation, light, radiation scattering, refractometry, surface plasmon resonance, theoretical model, Computer-Aided Design, Equipment Failure Analysis, Models, Theoretical, Scattering, Radiation
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Annan materialteknik
Identifikatorer
URN: urn:nbn:se:kth:diva-151439DOI: 10.1364/OE.19.000838ISI: 000286314600044Scopus ID: 2-s2.0-78751488539OAI: oai:DiVA.org:kth-151439DiVA, id: diva2:748748
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QC 20140922

Tillgänglig från: 2014-09-22 Skapad: 2014-09-22 Senast uppdaterad: 2017-12-05Bibliografiskt granskad

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Wosinski, Lech

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Shi, YaochengWang, ZhechaoHe, SailingHolmström, PetterWosinski, LechThylén, LarsDai, Daoxin
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Zhejiang-KTH Joint Research Center of Photonics, JORCEPFotonik (Stängd 20120101)
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Optics Express
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