Fano resonance sensing characteristics of MIM waveguide coupled Square Convex Ring Resonator with metallic baffle

Chen, Ying; Xu, Yangmei; Cao, Jinggang

doi:10.1016/j.rinp.2019.102420

Cited by 57 publications

(26 citation statements)

References 18 publications

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“…The default values are the best structure parameters and the properties is better than most of those that are listed in Table 1. [31] 1262 [27] 1180 [32] 1295 [28] 1350 [33] 1120 [29] 1075 [34] 1949 [30] 1200 [35] 2080…”

Section: Resultsmentioning

confidence: 99%

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Study on the Nanosensor Based on a MIM Waveguide with a Stub Coupled with a Horizontal B-Type Cavity

et al. 2021

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Due to their compact size and high sensitivity, plasmonic sensors have become a hot topic in the sensing field. A nanosensor structure, comprising the metal–insulator–metal (MIM) waveguide with a stub and a horizontal B-Type cavity, is designed as a refractive index sensor. The spectral characteristics of proposed structure are analyzed via the finite element method (FEM). The results show that there is a sharp Fano resonance profile, which is excited by a coupling between the MIM waveguide and the horizontal B-Type cavity. The normalized HZ field is affected by the difference value between the outer radii R1 and R2 of the semi-circle of the horizontal B-Type cavity greatly. The influence of every element of the whole system on sensing properties is discussed in depth. The sensitivity of the proposed structure can obtain 1548 nm/RIU (refractive index unit) with a figure of merit of 59. The proposed structure has potential in nanophotonic sensing applications.

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Section: Resultsmentioning

confidence: 99%

“…Qi [32]. Chen et al presented an MIM waveguide coupled a resonator with a single metallic baffle with a sensitivity of 1120 nm/RIU [33]. Recently, some high-sensitivity refractive index sensors have been proposed.…”

Section: Introductionmentioning

confidence: 99%

Study on the Nanosensor Based on a MIM Waveguide with a Stub Coupled with a Horizontal B-Type Cavity

et al. 2021

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“…Multiple resonance modes can broadly adopt in multi-channel biosensors, enhancing multiband second-harmonic generation, multiband slow-light devices, and multi-wavelength surface-enhanced spectroscopy 40 . In the past few years, different MIM-cavity patterns of the plasmonic sensors such as rectangular cavities 41 , 42 , nanodisk cavities 43 – 45 , metallic double-baffle 25 , crossed ring-shaped metasurface 46 , gear-shaped nanocavity 28 , T-shaped resonators 47 – 49 , tooth-shaped cavities 50 , semi-ring cavity 24 , 51 and racetrack ring resonator 52 , have been proposed. Specifically, certain designs used the nanoscale coupled gap resonators 53 – 56 to design the plasmonic refractive index sensors based on the gap plasmon resonance (GPR) effect, which can significantly enhance the resonator's SPPs mode.…”

Section: Introductionmentioning

confidence: 99%

Significantly enhanced coupling effect and gap plasmon resonance in a MIM-cavity based sensing structure

Chau

Ming

Chao

et al. 2021

Sci Rep

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Herein, we design a high sensitivity with a multi-mode plasmonic sensor based on the square ring-shaped resonators containing silver nanorods together with a metal–insulator-metal bus waveguide. The finite element method can analyze the structure's transmittance properties and electromagnetic field distributions in detail. Results show that the coupling effect between the bus waveguide and the side-coupled resonator can enhance by generating gap plasmon resonance among the silver nanorods, increasing the cavity plasmon mode in the resonator. The suggested structure obtained a relatively high sensitivity and acceptable figure of merit and quality factor of about 2473 nm/RIU (refractive index unit), 34.18 1/RIU, and 56.35, respectively. Thus, the plasmonic sensor is ideal for lab-on-chip in gas and biochemical analysis and can significantly enhance the sensitivity by 177% compared to the regular one. Furthermore, the designed structure can apply in nanophotonic devices, and the range of the detected refractive index is suitable for gases and fluids (e.g., gas, isopropanol, optical oil, and glucose solution).

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“…Side-coupled or direct-coupled cavities with different aspects suffer an important role in producing a better light-matter interaction in the MIM-cavity waveguide system [38,39]. In the past few years, different MIM-cavity patterns of the plasmonic sensors such as rectangular cavities [40,41], nanodisk cavities [42][43][44], metallic double-baffle [25], crossed ring-shaped metasurface [45], gear-shaped nanocavity [28], T-shaped resonators [46][47][48], tooth-shaped cavities [49], semi-ring cavity [24,50] and racetrack ring resonator [51], have been proposed. Specifically, certain designs used the nanoscale coupled gap resonators [52][53][54][55] to design the plasmonic refractive index sensors based on the gap plasmon resonance effect, which can significantly enhance the resonator's SPPs mode.…”

Section: Introductionmentioning

confidence: 99%

Significantly Enhanced Coupling Effect and Gap Plasmon Resonance in a MIM-cavity based Sensing Structure

Chau

Ming

Chao

et al. 2021

Preprint

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Herein, we design a high sensitivity with a multi-mode plasmonic sensor based on the square ring-shaped resonators containing silver nanorods together with a metal-insulator-metal bus waveguide. The finite element method is used to analyze the transmittance properties and electromagnetic field distributions of the structure in detail. Results show that the coupling effect between the bus waveguide and the side-coupled resonator can enhance by generating gap plasmon resonance among the silver nanorods, increasing the cavity plasmon mode in the resonator. The suggested structure obtained relatively high sensitivity and acceptable figure of merit and quality factor of about 2473 nm/RIU (refractive index unit), 34.18 1/RIU and 56.35, respectively. The achieved plasmonic sensor is ideal for lab-on-chip in gas and biochemical analysis and can significantly enhance the sensitivity by 177% compared to the regular one. The designed structure can apply in nanophotonic devices, and the range of the detected refractive index is suitable for gases and fluids (e.g., gas, isopropanol, optical oil and glucose solution).

show abstract

Fano resonance sensing characteristics of MIM waveguide coupled Square Convex Ring Resonator with metallic baffle

Cited by 57 publications

References 18 publications

Study on the Nanosensor Based on a MIM Waveguide with a Stub Coupled with a Horizontal B-Type Cavity

Study on the Nanosensor Based on a MIM Waveguide with a Stub Coupled with a Horizontal B-Type Cavity

Significantly enhanced coupling effect and gap plasmon resonance in a MIM-cavity based sensing structure

Significantly Enhanced Coupling Effect and Gap Plasmon Resonance in a MIM-cavity based Sensing Structure

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