Complete spectral gap in coupled dielectric waveguides embedded into metal

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Liu W., Sukhorukov A. A., Miroshnichenko A. E., Poulton C. G., BOZKURT M., Neshev D. N., ...Daha Fazla

APPLIED PHYSICS LETTERS, cilt.97, sa.2, 2010 (SCI-Expanded, Scopus)

• Yayın Türü: Makale / Tam Makale
• Cilt numarası: 97 Sayı: 2
• Basım Tarihi: 2010
• Doi Numarası: 10.1063/1.3458694
• Dergi Adı: APPLIED PHYSICS LETTERS
• Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
• Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
• Ankara Üniversitesi Adresli: Evet

Özet

We study a plasmonic coupler involving backward (TM01) and forward (HE11) modes of dielectric waveguides embedded into an infinite metallic background. The simultaneously achievable contradirectional energy flows and codirectional phase velocities in different channels lead to a spectral gap, despite the absence of periodic structures along the waveguide. We demonstrate that a complete spectral gap can be achieved in a symmetric structure composed of four coupled waveguides. (C) 2010 American Institute of Physics. [doi:10.1063/1.3458694]