Tunable filter and optical buffer based on dual plasmonic ring resonators

Li, Boxun; Li, Hongjian; Zeng, Lili; Zhan, Shiping; Cao, Guangtao; He, Zhihui; Yang, Hui

doi:10.1080/09500340.2014.967322

Cited by 10 publications

(6 citation statements)

References 33 publications

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“…A number of devices based on SPPs have been numerically simulated and experimentally demonstrated, such as bandpass filter, sensors, optical buffers, and amplifiers [8]- [11]. Among these devices, metal-dielectric-metal (MDM) waveguides are the most promising for realization of nanoscale devices, owing to their deep-subwavelength confinement of light and relatively easy fabrication [12]- [17].…”

Section: Introductionmentioning

confidence: 99%

High-Sensitivity Sensing Based on Plasmon-Induced Transparency

Zeng

et al. 2015

IEEE Photonics J.

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High-sensitivity sensing based on plasmon-induced transparency (PIT) in a rectangular resonator has been investigated in detail. Multimode theory is introduced to explain the redshift and blueshift of the transmission spectrum by adjusting a structural parameter (w or h). In sensing applications, the sensitivity of the proposed structure is about 800 nm/RIU, and its figure of merit (FOM) is as high as 17280. In addition, the influences of structural parameters on FOM are researched in detail. The results indicate that structural parameters play important roles in optimizing the sensing performance, and the length ðhÞ is more sensitive than the width ðw Þ for FOM. The plasmonic configuration has the advantages of easy fabrication and compactness, which may find important applications in highly integrated optics devices, optical communication, and sensitive nanometerscale refractive index sensors.

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Section: Introductionmentioning

confidence: 99%

High-Sensitivity Sensing Based on Plasmon-Induced Transparency

Zeng

et al. 2015

IEEE Photonics J.

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“…An actively tunable plasmonic device with band-pass function has been investigated using graphene metamaterials [20]. In addition, the transmission for filters is pretty sensitive to the phase shift between the resonators and the waveguide feedback mechanism [21][22][23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Plasmonic tunable filter based on trapezoid resonator waveguide

Song

Wang

et al. 2015

Journal of Modern Optics

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2015): Plasmonic tunable filter based on trapezoid resonator waveguide, Journal of Modern Optics,The metal-insulator-metal waveguide structures coupled with a trapezoid cavity are proposed in theory. A variety of transmission features have been found from the simulation results, which is caused by the interference of the plasmonic modes in the trapezoid resonator. The transmission spectra can be effectively modulated by optimizing the geometrical parameters of our configurations such as the height, the upper and bottom edge lengths. Also, the coupling distance possesses great importance on the transmission characteristic. It is found that when the coupling distance is chosen to be around 20 nm, the filter works efficiently. When the trapezoid resonator is attached to the waveguide bus, the bandwidth becomes large. Besides, an effective band-stop filter can be achieved when the bottom edge length is large enough. The finite element method is carried out to verify our designs. We hope our work may open some new avenues for a high-performance plasmonic filter.

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“…Surface plasmon resonance (SPR) phenomena are widely used in the design of optical devices, such as optical switches [9], plasmonic filters [10][11][12][13], multiplexers, demultiplexers [8,14] and different kinds of sensors [15][16][17][18][19] with hexagonal cavity [20] or slit cavity [21] structures, or waveguide and ring resonator [22][23][24] structures.…”

Section: Introductionmentioning

confidence: 99%

A highly sensitive and compact plasmonic ring nano-biosensor for monitoring glucose concentration

2019

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In this study, a new plasmonic biosensor is proposed, which is highly sensitive with a compact structure, based on numerical methods for glucose concentration monitoring in different samples. The biosensor is based on a metal-insulator-metal waveguide and a ring resonator, and the calculated results are analyzed. The glucose biosensor operation is based on the refractive index of the glucose solution in the structure. In this study, to improve the sensitivity of the biosensor, the effect of the inner radius size parameter on spectral sensing has been fully analyzed. This biosensor in resonance wavelengths has a linear relationship with the refractive index of the glucose solution. In this structure, the maximum linear sensitivity is in glucose concentration. In addition, compared to other similar sensors, this biosensor has a label-free detection basis and has a very simple and ultra-compact structure: its size is . Considering the special features of this sensor, it could be used as optical on-chip biosensors for glucose concentration monitoring.

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Tunable filter and optical buffer based on dual plasmonic ring resonators

Cited by 10 publications

References 33 publications

High-Sensitivity Sensing Based on Plasmon-Induced Transparency

High-Sensitivity Sensing Based on Plasmon-Induced Transparency

Plasmonic tunable filter based on trapezoid resonator waveguide

A highly sensitive and compact plasmonic ring nano-biosensor for monitoring glucose concentration

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