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Enhancing resonant tunnelling of a wide beam through vertical slow-light photonic-crystal waveguides (SPCWs) with an assistant horizontal SPCW
KTH, School of Information and Communication Technology (ICT), Centres, Zhejiang-KTH Joint Research Center of Photonics, JORCEP.
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering. KTH, School of Information and Communication Technology (ICT), Centres, Zhejiang-KTH Joint Research Center of Photonics, JORCEP.ORCID iD: 0000-0002-3401-1125
2008 (English)In: Optics Express, ISSN 1094-4087, E-ISSN 1094-4087, Vol. 16, no 24, 19550-19556 p.Article in journal (Refereed) Published
Abstract [en]

Enhancement of resonant tunnelling of a wide beam through vertical subwavelength slow-light photonic-crystal waveguides (SPCWs) is considered. An assistant horizontal SPCW with a thin side wall, whose guided modes have small propagation constants, is used as an input coupler for the vertical SPCW, and the two SPCWs form a compact composite structure to enhance drastically the resonant tunnelling. An incident wide beam can excite strongly the guided modes of the horizontal SPCW, and then resonantly tunnels through the vertical SPCW efficiently. To further improve the resonant tunnelling of a wide beam, a periodic array of vertical SPCWs (with a horizontal SPCW as an input coupler) is also investigated. With this periodic structure, a wide beam can be transmitted nearly completely. When a wide beam tunnels through the vertical SPCWs efficiently, the excited fields inside the SPCWs are very strong.

Place, publisher, year, edition, pages
2008. Vol. 16, no 24, 19550-19556 p.
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-33417DOI: 10.1364/OE.16.019550ISI: 000261561900015Scopus ID: 2-s2.0-56749165132OAI: oai:DiVA.org:kth-33417DiVA: diva2:415110
Funder
Swedish Research Council, 2006-4048
Note
QC 20110505Available from: 2011-05-05 Created: 2011-05-05 Last updated: 2017-12-11Bibliographically approved

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He, Sailing

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