Plasmonic variable optical attenuator based on liquid-crystal tunable stripe waveguides

Zografopoulos, Dimitrios C. and Beccherelli, Romeo (2012) Plasmonic variable optical attenuator based on liquid-crystal tunable stripe waveguides. Plasmonics. pp. 1-6. ISSN 1557-1963

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A long-range surface plasmon polariton variable optical attenuator based on available nematic liquid crystals and polymers is proposed and theoretically investigated. It is demonstrated that the electro-optic control of the nematic molecular orientation is capable of tuning the level of index asymmetry of an Au stripe waveguide and the key properties of the fundamental long-range plasmonic mode, such as modal profile and propagation losses. By proper structural design and material selection, plasmonic in-line intensity modulators are designed, which exhibit very low power consumption, extinction ratios in excess of 30 dB, and insertion losses as low as 1 dB for a device length in the millimeter range. Such active plasmonic elements are envisaged to be used in interchip photonics bus interconnects.

Item Type: Article
Uncontrolled Keywords: Surface plasmons; guided wave; plasmonics; integrated optic devices; liquid-crystalphotonics; optical interconnects
Subjects: 600 Tecnologia - Scienze applicate > 620 Ingegneria e attivita' affini > 621 Fisica applicata; Ingegneria meccanica > 621.3 Ingegneria elettrotecnica; Illuminazione; Superconduttivita'; Ingegneria magnetica; Ottica applicata; Tecnologia parafotica; Elettronica; Ingegneria delle comunicazioni; Elaboratori
Depositing User: Chiara D'Arpa
Date Deposited: 12 Mar 2013 16:23
Last Modified: 22 Mar 2013 11:40

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