A low-loss metal-insulator-metal plasmonic bragg reflector

Hossieni, Amir; Massoud, Yehia

doi:10.1364/oe.14.011318

Cited by 211 publications

(133 citation statements)

References 13 publications

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“…It was shown that a plasmonic Bragg reflector can be formed by the metal-insulator-metal waveguide with periodic changes of the insulator material (index-modulated reflectors) or/and insulator thickness (thickness-modulated reflectors) [46][47][48][49]. Waves propagation in the structures with various shapes (step-profile, s-shaped, sawtooth-profile, triangular-shaped and so on) is described in terms of effective indices of the guided modes.…”

Section: Bragg Gratingmentioning

confidence: 99%

Plasmonic modulator optimized by patterning of active layer and tuning permittivity

Babicheva

Lavrinenko

2012

Optics Communications

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Abstract.We study an ultra-compact plasmonic modulator that can be applied in photonic integrated circuits. The modulator is a metal-insulator-metal waveguide with an additional ultra-thin layer of indium tin oxide (ITO). Bias is applied to the multilayer core by means of metal plates that serve as electrodes. External field changes carrier density in the ultra-thin ITO layer, which influences the permittivity. The metal-insulator-metal system possesses a plasmon resonance, and it is strongly affected by changes in the permittivity of the active layer. To improve performance of the structure we propose several optimizations. We examine influence of the ITO permittivity on the modulator's performance and point out appropriate values. We analyze eigenmodes of the waveguide structure and specify the range for its efficient operation. We show that substituting the continuous active layer by a one-dimension periodic stripes increases transmittance through the device and keeps the modulator's performance at the same level. The dependence on the pattern size and filling factor of the active material is analyzed and optimum parameters are found. Patterned ITO layers allow us to design a Bragg grating inside the waveguide. The grating can be turned on and off, thus modulating reflection from the structure. The considered structure with electrical control possesses a high performance and can efficiently work as a plasmonic component in nanophotonic architectures.

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Section: Bragg Gratingmentioning

confidence: 99%

Plasmonic modulator optimized by patterning of active layer and tuning permittivity

Babicheva

Lavrinenko

2012

Optics Communications

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“…10 The bandgap width could be widened by inserting the high index material into narrower slits with wider ones unfilled. 11,12 By introducing an defect in the periodicity, plasmonic nanocavity can be formed and can be used in filters, low-threshold lasers and light-emitting diodes. 11,12 Based on the transfer-matrix method, finite planar MIM plasmonic waveguides have been systematically investigated, where bound and leaky surface plasmon modes coexist.…”

Section: Introductionmentioning

confidence: 99%

“…11,12 By introducing an defect in the periodicity, plasmonic nanocavity can be formed and can be used in filters, low-threshold lasers and light-emitting diodes. 11,12 Based on the transfer-matrix method, finite planar MIM plasmonic waveguides have been systematically investigated, where bound and leaky surface plasmon modes coexist. 13 To solve the technical problems of MIM plasmonic Bragg reflectors (PBRs) with step profiles, sawtooth profiles are proposed and numerical study reveals that they have lower insertion loss, narrower bandgap, and reduced rippling in the transmission spectrum when compared with the step PBRs.…”

Section: Introductionmentioning

confidence: 99%

Strong coupling effects between a meta-atom and MIM nanocavity

Chen

Liu

et al. 2012

AIP Advances

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In this paper, we investigate the strong coupling effects between a meta-atom and a metal-insulator-metal (MIM) nanocavity. By changing the meta-atom sizes, we achieve the meta-atomic electric dipole, quadrupole or multipole interaction with the plasmonic nanocavity, in which characteristic anticrossing behaviors demonstrate the occurrence of the strong coupling. The various interactions present obviously different splitting values and behaviors of dependence on the meta-atomic position. The largest Rabi-type splittings, about 360.0 meV and 306.1 meV, have been obtained for electric dipole and quadrupole interaction, respectively. We attribute the large splitting to the highly-confined cavity mode and the large transition dipole of the meta-atom. Also the Rabi-type oscillation in time domain is given

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“…4 This kind of Bragg plasmonic structure is the analogy of the fiber Bragg gratings (FBGs) in classical optics. And the effective index of a MIM section can be modified by changing the insulator 5,6 or the width of the insulator layer. [7][8][9] Besides, a structure of quasiperiodic metal hetero-waveguide is proposed for achieving a double-band plasmon Bragg reflector.…”

Section: Introductionmentioning

confidence: 99%

Actively controlled plasmonic Bragg reflector based on a graphene parallel-plate waveguide

2015

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We investigate theoretically and numerically a graphene parallel-plate waveguide structure with two alternate chemical potentials (which can be realized by alternately applying two biased voltages to graphene). A plasmonic Bragg reflector can be formed in infrared range because of the alternate effective refractive indexes of SPPs propagating along graphene sheets. By introducing a defect into the Bragg reflector, and then the defect resonance mode can be formed. Thanks to the tunable permittivity of graphene by bias voltages, the central wavelength and bandwidth of SPPs stop band, and the wavelength of the defect mode can be tuned.

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A low-loss metal-insulator-metal plasmonic bragg reflector

Cited by 211 publications

References 13 publications

Plasmonic modulator optimized by patterning of active layer and tuning permittivity

Plasmonic modulator optimized by patterning of active layer and tuning permittivity

Strong coupling effects between a meta-atom and MIM nanocavity

Actively controlled plasmonic Bragg reflector based on a graphene parallel-plate waveguide

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