【摘 要】
：
Resonance cavity is a basic element in optics,which has wide applications in optical devices.Coupled cavities(CCs) designed in metal-insulator-metal (MIM) bus waveguide are investigated through the finite difference time domain method and coupled-mode the
【机 构】
：
School of Physics,Guizhou University,Guiyang 550025,China
论文部分内容阅读
Resonance cavity is a basic element in optics,which has wide applications in optical devices.Coupled cavities(CCs) designed in metal-insulator-metal (MIM) bus waveguide are investigated through the finite difference time domain method and coupled-mode theory.In the CCs,the resonant modes of the surface plasmon polaritons (SPPs) split with the thickness decreasing of the middle baffle.Through the coupled-mode theory analysis,it is found that the phase differences introduced in opposite and positive couplings between two cavities lead to mode splitting.The resonant wavelength of positive coupling mode can be tuned in a large range (about 644 nm) through adjusting the coupling strength,which is quite different from the classical adjustment of the optical path in a single cavity.Based on the resonances of the CCs in the MIM waveguide,more compact devices can be designed to manipulate SPPs propagation.A device is designed to realize flexible multiple-wavelength SPPs routing.The coupling in CC structures can be applied to the design of easy-integrated laser cavities,filters,multiple-wavelength management devices in SPPs circuits,nanosensors,etc.
其他文献
We report on an idler-resonant femtosecond optical parametrical oscillator (OPO) based on BiB3O6 (BiBO) crystal,synchronously pumped by a frequency-doubled,mode-locked Yb:KGW laser at 515 nm.The idler wavelengths of OPO can be tuned from 1100 nm to 1540 n
This work investigates the active control of a fully developed turbulent boundary layer by a submerged synthetic jet actuator.The impacts of the control are explored by measuring the streamwise velocities using particle image velocimetry,and reduction of
With the increasing maturity of automatic driving technology,the homogeneous traffic flow will gradually evolve into the heterogeneous traffic flow,which consists of human-driving and autonomous vehicles.To better study the charac-teristics of the heterog
A phase-field-based lattice Boltzmann model is proposed for the interface capturing of multi-phase flows based on the conservative Allen-Cahn equation (ACE).By adopting the improved form of a relaxation matrix and an equilibrium distri-bution function,the
Evolution of the charged grains in a two-dimensional dusty plasma under a spatially harmonic extemal force,in particular,their long-time behaviors after the force has been withdrawn,is studied by using molecular dynamics simulation.Under an extemal force
We report that using asymmetric lattice periods can enhance the quality factor of plasmonic surface lattice resonances(SLRs) in two-dimensional array of metal-insulator-metal nanopillars in asymmetric dielectric environment.Simulation results show that by
The magnetic merging process related to pairwise magnetic islands coalescence is investigated by two-dimensional particle-in-cell simulations with a guide field.Owing to the force of attraction between parallel currents within the initial magnetic islands
The optical response of metal nanoparticles can be modified through near-field or far-field interaction,yet the lattice plasmon modes (LPMs) considered can only be excited from the latter.Here instead,we present a theoretical evaluation for LPM excitation
Thermally induced apoptosis for tumors depends mainly on the intrinsic characteristics of biological tissues as well as treatment temperature profile during magnetic hyperthermia.Further,treatment temperature distribution inside tumor depends on the injec
In fast Z-pinches,rise time of drive current plays an important role in development of magneto-Rayleigh-Taylor(MRT) instabilities.It is essential for applications of Z-pinch dynamic hohlraum (ZPDH),which could be used for driving inertial confinement fusi