Document Detail

Wavelength-selective directional coupling with dielectric-loaded plasmonic waveguides.
MedLine Citation:
PMID:  19183641     Owner:  NLM     Status:  PubMed-not-MEDLINE    
We consider wavelength-selective splitting of radiation using directional couplers (DCs) formed by dielectric-loaded surface-plasmon-polariton waveguides (DLSPPWs). The DCs were fabricated by depositing sub-wavelength-sized polymer ridges on a gold film using large-scale UV photolithography and characterized at telecommunications wavelengths with near-field microscopy. We demonstrate a DLSPPW-based 45-microm-long DC comprising 3 microm offset S bends and 25-microm-long parallel waveguides that changes from the "through" state at 1500 nm to 3 dB splitting at 1600 nm, and show that a 50.5-microm-long DC should enable complete separation of the radiation channels at 1400 and 1620 nm. The DC performance is found to be in good agreement with full vectorial three-dimensional finite-element simulations.
Zhuo Chen; Tobias Holmgaard; Sergey I Bozhevolnyi; Alexey V Krasavin; Anatoly V Zayats; Laurent Markey; Alain Dereux
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Optics letters     Volume:  34     ISSN:  0146-9592     ISO Abbreviation:  Opt Lett     Publication Date:  2009 Feb 
Date Detail:
Created Date:  2009-02-02     Completed Date:  2009-04-16     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7708433     Medline TA:  Opt Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  310-2     Citation Subset:  -    
Department of Physics and Nanotechnology, Aalberg University, Aalborg Øst, Denmark.
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