2007
DOI: 10.1021/nl070682p
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Plasmonic Crystal Demultiplexer and Multiports

Abstract: We report the realization of two-dimensional optical wavelength demultiplexers and multiports for surface plasmons polaritons (SPPs) based on plasmonic crystals, i.e., photonic crystals for SPPs. These SPP elements are built up of lithographically fabricated gold nanostructures on gold thin films. We show by direct imaging of laterally confined SPP beams in the visible spectral range by leakage radiation microscopy that SPPs of different wavelengths are efficiently rerouted into different directions. In additi… Show more

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Cited by 116 publications
(75 citation statements)
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“…in-plane momentum) space [6]. It has been successfully applied to the study of several plasmonic devices such as planar lenses and wave-guides, nano-holes and slits, interferometers and photonic crystals [7][8][9][10][11][12][13][14][15][16], where it is complementary to near-field scanning optical methods [1,17,18] and scanning tunneling electron microscopy (STM) [19,20]. Due to its high sensitivity LRM constitutes an ideal approach for optical metrology in the Fourier space of phenomena such as spin-Hall effect, SPP mode steering, and negative refraction [21,22].…”
Section: Introductionmentioning
confidence: 99%
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“…in-plane momentum) space [6]. It has been successfully applied to the study of several plasmonic devices such as planar lenses and wave-guides, nano-holes and slits, interferometers and photonic crystals [7][8][9][10][11][12][13][14][15][16], where it is complementary to near-field scanning optical methods [1,17,18] and scanning tunneling electron microscopy (STM) [19,20]. Due to its high sensitivity LRM constitutes an ideal approach for optical metrology in the Fourier space of phenomena such as spin-Hall effect, SPP mode steering, and negative refraction [21,22].…”
Section: Introductionmentioning
confidence: 99%
“…A gen- * Electronic address: aurelien.drezet@neel.cnrs.fr eral approach taken in refs. [7,18,20,25] is to consider the electromagnetic field generated by a point-like dipole located in the vicinity of a metal film using the Green dyadic formalism [2] and the transfer matrix method. However, a good understanding of LRM requires to take rigorously into account the properties of high numerical aperture objectives needed for imaging the SPP fields.…”
Section: Introductionmentioning
confidence: 99%
“…Some SPP dispersing elements have been demonstrated, such as the overlapping bull's eye structure, 17 metal-insulator-metal resonator 18 and SPP crystal structures for splitting SPPs of different wavelengths into different directions. 19,20 However, a practical plasmonic demultiplexer needs to disperse multiple-channel data streams at different wavelengths spatially and focus them into various SPP wavelength components. In this work, we propose a plasmonic demultiplexer that can implement light-SPP coupling, effective dispersion, and multiple-channel SPP guiding.…”
mentioning
confidence: 99%
“…As key factors in these plasmonic nanostructures, coupled resonators will be principal elements due to their simplicity, symmetry, and ease of fabrication. Wavelength demultiplexers (WDMs), which can filter specific wavelengths in different channels, will play very important role in the all-optical systems [36]. Based on MIM coupled resonators, some WDM structures were proposed [37][38][39][40][41][42][43].…”
Section: Wavelength Filtering and Demultiplexing In Mim Plasmonic Wavmentioning
confidence: 99%