Design of a Refractive Index Plasmonic Sensor Based on a Ring Resonator Coupled to a MIM Waveguide Containing Tapered Defects

Rahmatiyar, Mahdiye; Afsahi, Majid; Danaie, Mohammad

doi:10.1007/s11468-020-01238-z

Cited by 95 publications

(39 citation statements)

References 70 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%

“…In refractive index sensing field, Chen et al designed a surface plasmon waveguide structure, and the sensitivity is up to 1180 nm/RIU [27]. 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].…”

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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“…SPPs wave rises above the light diffraction limit and can confine the light within nanoscale; consequently, they have wide-ranging applications of SPPs wave in photonic integration circuits [8][9][10][11][12]. Optical devises depending on SPP waveguides, e.g., filters [13,14], modulators [15,16], absorbers [17,18], demultiplexer [19], amplifiers [20,21], switches [22,23], and sensors [24][25][26][27][28] have been investigated and designed. Among them, metal-insulator-metal (MIM) waveguides with long propagation distance, low loss, strong light confinement, inexpensive production, and ease of manufacture and integration have received considerable interest and attention [26,[29][30][31].…”

Section: Introductionmentioning

confidence: 99%

“…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. As reported in [54], a silver nanorod array embedded into a square resonator was proposed and can apply for blood group identification.…”

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).

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“…Surface plasmon polaritons (SPPs) are electromagnetic (EM) wave coupled to the collective oscillations of free electrons on the metal surface and propagate between the metal-dielectric interface [1][2][3][4][5][6][7][8]. Plasmonic metal-insulator-metal (MIM) waveguide, one of the SPPs waveguide schemes, has received fascinated attentions because of its attractive features, such as bonding strongly localized surface plasmon resonance (SPR), overcoming diffraction limit in conventional optics, low propagation loss, simple manufacturing steps, and compatible integration optics circuits (IOCs) [5,[9][10][11][12][13][14][15]. Therefore, a variety of functional plasmonic components utilizing MIM waveguides have been designed experimentally and demonstrated theoretically, such as sensors [16], all-optical switches [17], splitters [18], modulators [19], demultiplexers [20], filters [21], interferometers [22], etc.…”

Section: Introductionmentioning

confidence: 99%

Multiple-Mode Bowtie Cavities for Refractive Index and Glucose Sensors Working in Visible and Near-Infrared Wavelength Range

Chau

2021

Preprint

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A multiple-mode metal-insulator-metal plasmonic sensor with four coupled bowtie resonators containing two pair of silver baffles is numerically investigated using the finite element method and verified by the temporal coupled-mode theory. The proposed structure can function as the plasmonic refractive index and glucose sensors working in visible and near-infrared wavelength range. Simulation results show that introducing the silver baffles in bowtie cavities can modify the plasmon resonance modes and give a tunable way to enhance the sensitivity and figure of merit. The highest sensitivity (S) can reach S=1500.00, 1400.00, and 1100.00 nm/RIU and the high figure of merit (FOM) of 50.00, 46.67, and 36.67 RIU-1 from mode 1 to mode 3. The sensitivity obtained from three modes with operating wavelengths in visible and near-infrared simultaneously exceeds 1100.00 nm/RIU along with remarkably high FOM, which are not attainable from other reported literature. The proposed structure can realize multi-mode and shows impressive practical prospects that can be applied for integrated optics circuits (IOCs) and other nanophotonics devices.

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Design of a Refractive Index Plasmonic Sensor Based on a Ring Resonator Coupled to a MIM Waveguide Containing Tapered Defects

Cited by 95 publications

References 70 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

Multiple-Mode Bowtie Cavities for Refractive Index and Glucose Sensors Working in Visible and Near-Infrared Wavelength Range

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