Journal ArticleDOI
A Refractive Index Nanosensor Based on Fano Resonance in the Plasmonic Waveguide System
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TLDR
In this paper, a novel and compact refractive index sensor based on Fano resonance in the plasmonic waveguide system, which comprises with a stub and groove resonator coupled with a metal-insulator-metal waveguide, is proposed and investigated by the finite-element method.Abstract:
A novel and compact refractive index sensor based on Fano resonance in the plasmonic waveguide system, which comprises with a stub and groove resonator coupled with a metal–insulator–metal waveguide, is proposed and investigated by the finite-element method. Due to the interaction of the narrow discrete resonance and a broad spectrum caused by the stub resonator and the groove, respectively, the transmission spectrum exhibits a sharp asymmetrical profile. Simulation results show that the Fano resonance can be easily tuned by changing the parameters of the structure. These characteristics offer flexibility to design the devices. This nanosensor yields a sensitivity of $\sim 1260$ nm/RIU and a figure of merit of $\sim 2.3\,\times \, 10^{\mathrm {\mathbf {4}}}$ . This letter is significant for design and application of the sensitive nanoscale refractive index sensor.read more
Citations
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Design of a plasmonic sensor based on a square array of nanorods and two slot cavities with a high figure of merit for glucose concentration monitoring.
TL;DR: Results show that, by placing different water samples in a square resonator and two cavities, resonance wavelengths can be changed and demonstrate different dependence on the glucose concentration of water samples, which can help researchers to discover applications in the plasmonic sensor domain.
Journal ArticleDOI
Fano resonances in a plasmonic waveguide system composed of stub coupled with a square cavity resonator
TL;DR: In this paper, a coupled plasmonic waveguide resonator system which can produce sharp and asymmetric Fano resonances was proposed and analyzed, and the potential of the proposed Fano system as an integrated slow-light device and refractive index sensor was investigated.
Journal ArticleDOI
Tunable triple Fano resonances based on multimode interference in coupled plasmonic resonator system
TL;DR: An asymmetric plasmonic structure composed of two MIM (metal-insulator-metal) waveguides and two rectangular cavities is reported, which can support triple Fano resonances originating from three different mechanisms.
Journal ArticleDOI
Fano resonance sensing characteristics of MIM waveguide coupled Square Convex Ring Resonator with metallic baffle
TL;DR: In this paper, a metal-insulator-metal (MIM) waveguide coupled a square convex ring Resonator (SCRR) with single metallic baffle structure is proposed based on the transmission characteristics of the surface plasmonic polaritons in sub-wavelength structures.
Journal ArticleDOI
Study on the Fano resonance of coupling M-type cavity based on surface plasmon polaritons
TL;DR: In this paper, the metal-insulator-metal (MIM) waveguide structure consisting of an M-type cavity and a baffle is proposed, which possesses a distinctly sharp asymmetric Fano resonance line.
References
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Journal ArticleDOI
The Fano resonance in plasmonic nanostructures and metamaterials
Boris Luk'yanchuk,Nikolay I. Zheludev,Stefan A. Maier,Naomi J. Halas,Peter Nordlander,Harald Giessen,Chong Tow Chong,Chong Tow Chong +7 more
TL;DR: The steep dispersion of the Fano resonance profile promises applications in sensors, lasing, switching, and nonlinear and slow-light devices.
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Localized Surface Plasmon Resonance Sensors
Kathryn M. Mayer,Jason H. Hafner +1 more
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Fano resonances in nanoscale structures
TL;DR: In this paper, the authors introduce the concept of Fano resonances, which can be reduced to the interaction of a discrete (localized) state with a continuum of propagation modes, and explain their geometrical and/or dynamical origin.
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Infrared Perfect Absorber and Its Application As Plasmonic Sensor
TL;DR: A perfect plasmonic absorber is experimentally demonstrated at lambda = 1.6 microm, its polarization-independent absorbance is 99% at normal incidence and remains very high over a wide angular range of incidence around +/-80 degrees.
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Plasmonic analogue of electromagnetically induced transparency at the Drude damping limit.
Na Liu,Lutz Langguth,Thomas Weiss,Jürgen Kästel,Michael Fleischhauer,Tilman Pfau,Harald Giessen +6 more
TL;DR: A nanoplasmonic analogue of EIT is experimentally demonstrated using a stacked optical metamaterial to achieve a very narrow transparency window with high modulation depth owing to nearly complete suppression of radiative losses.