Open AccessCompact Z-add-drop wavelength filters for long-range surface plasmon polaritons
Author(s) -
Alexandra Boltasseva,
Sergey I. Bozhevolnyi,
Thomas Søndergaard,
Thomas Nikolajsen,
Kristján Leósson
Publication year - 2005
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.13.004237
Subject(s) - surface plasmon polariton , optics , materials science , surface plasmon , wavelength , grating , diffraction grating , plasmon , drop (telecommunication) , polariton , extraordinary optical transmission , localized surface plasmon , optoelectronics , physics , telecommunications , computer science
We design, fabricate and investigate compact Z-add-drop (ZAD) filters for long-range surface plasmon polaritons (LR-SPPs) at telecom wavelengths. The ZAD filter for LR-SPPs consists of two ridge gratings formed by periodic gold thickness modulation at the intersections of three zigzag-crossed gold stripes embedded in polymer. We investigate influence of the grating length and crossing angle on the filter characteristics and demonstrate a 10 masculine- ZAD filter based on 80-microm-long gratings that exhibit a 15-dB dip (centered at ~ 1.55 microm) in transmission of the direct arm along with the corresponding ~ 13-nm-wide transmission peak in the drop arm.