A waveguide-typed plasmonic mode converter

Park, Hae-Ryeong; Park, Jong; Kim, Min-Su; Lee, Myung-Hyun

doi:10.1364/oe.20.018636

Cited by 10 publications

(5 citation statements)

References 29 publications

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“…On the other hand, if a plasmonic circuit would be placed in a varying dielectric environment, a strongly confined SPP mode may be a better choice because it would be less sensitive to the change of the surrounding mediums. Thus a mode converter for the two fundamental modes in the doublenanowire system will be useful for its diverse applications in plasmonic circuits and lightmatter interactions [44,45]. For example, if a mode 1 SPP wave is to propagate to a detector, the mode 1 SPP wave could be first injected into the double-nanowire system, converted to mode 2 and then transported to a longer distance, and finally converted back to mode 1 as we wish.…”

Section: Mode Conversionmentioning

confidence: 99%

Dispersion relation, propagation length and mode conversion of surface plasmon polaritons in silver double-nanowire systems

Sun¹,

Chen²,

Zheng³

et al. 2013

Opt. Express

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We study the surface plasmon modes in a silver double-nanowire system by employing the eigenmode analysis approach based on the finite element method. Calculated dispersion relations, surface charge distributions, field patterns and propagation lengths of ten lowest energy plasmon modes in the system are presented. These ten modes are categorized into three groups because they are found to originate from the monopole-monopole, dipole-dipole and quadrupole-quadrupole hybridizations between the two wires, respectively. Interestingly, in addition to the well studied gap mode (mode 1), the other mode from group 1 which is a symmetrically coupled charge mode (mode 2) is found to have a larger group velocity and a longer propagation length than mode 1, suggesting mode 2 to be another potential signal transporter for plasmonic circuits. Scenarios to efficiently excite (inject) group 1 modes in the two-wire system and also to convert mode 2 (mode 1) to mode 1 (mode 2) are demonstrated by numerical simulations.

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Section: Mode Conversionmentioning

confidence: 99%

Dispersion relation, propagation length and mode conversion of surface plasmon polaritons in silver double-nanowire systems

Sun¹,

Chen²,

Zheng³

et al. 2013

Opt. Express

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show abstract

“…Microscaled photonic signals can excite a micro-scaled plasmonic signal directly, with high efficiency; however, they cannot excite a nano-scaled surface plasmonic signal. A mode size converter from a micro-scaled plasmonic signal to a nano-scaled plasmonic signal has been demonstrated [15], [16]. Using this converter is the best way to provide compatibility with optical signals, which excite microscaled plasmonic signals.…”

Section: Introductionmentioning

confidence: 99%

Copying a Plasmonic Signal From an Optical Signal

et al. 2020

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We propose a plasmonic signal copier (PSC) composed of a gapped surface plasmon polariton waveguide (SPPW) and an optical waveguide laid across the gap. The interaction between an SPP and an optical signal around the gap edge is demonstrated experimentally and numerically with polarizations of the incident optical wave. A plasmonic signal is invertedly copied from a TE-polarized optical signal incident to the optical waveguide. The symmetrically distributed charges induced from the TE-polarized optical waves on the metal gap edges of input/output SPPWs were determined to be an essential trigger of the copied plasmonic signal. The characteristics of the PSC enable creation of a plasmonic-based circuit system that is compatible with an optical-based circuit system.

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“…The quantum properties of a photon-pair, including entanglement, can be preserved even in the conversion of photons into SPPs (photon-SPP), and vice versa (SPP-photon) [16,17]. A high bit-rate and the WDM data transmission over plasmonic waveguides were well demonstrated with low bit error rates [18,19] and there have been many efforts to develop waveguide-based plasmonic devices, for example the demultiplexer [20], a mode converter [12,[21][22][23], a coupler [24,25], and a logic gate [26], as building blocks for nanoplasmonic integrated circuits (NPICs).…”

Section: Introductionmentioning

confidence: 99%

Suppressed Transmission of Long-Range Surface Plasmon Polariton by TE-Induced Edge Plasmon

Kim

Lee

2021

Micromachines

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Work on controlling the propagation of surface plasmon polaritons (SPPs) through the use of external stimuli has attracted much attention due to the potential use of SPPs in nanoplasmonic integrated circuits. We report that the excitation of edge plasmon by TE-polarized light passing across gapped-SPP waveguides (G-SPPWs) leads to the suppressed transmission of long-range SPPs (LRSPPs) propagating along G-SPPWs. The induced current density by highly confined edge plasmon is numerically investigated to characterize the extended radiation length of decoupled LRSPPs by the TE-induced edge plasmon. The suppressed transmission of LRSPPs is confirmed using the measured extinction ratio of the plasmonic signals which are generated from the modulated optical signals, when compared to the extended radiation length calculated for a wide range of the input power. It is also shown that LRSPP transmission is sensitive to the excited power of edge plasmon in the gap through the permittivity change near the gap. Such a control of SPPs through the use of light could be boosted by the hybridized edge plasmon mode and a huge field enhancement using nanogap, gratings or metasurfaces, and could provide opportunities for ultrafast nano-plasmonic signal generation that is compatible with pervasive optical communication systems.

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A waveguide-typed plasmonic mode converter

Cited by 10 publications

References 29 publications

Dispersion relation, propagation length and mode conversion of surface plasmon polaritons in silver double-nanowire systems

Dispersion relation, propagation length and mode conversion of surface plasmon polaritons in silver double-nanowire systems

Copying a Plasmonic Signal From an Optical Signal

Suppressed Transmission of Long-Range Surface Plasmon Polariton by TE-Induced Edge Plasmon

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