Performance analysis of Bloch surface wave-based sensor using transition metal dichalcogenides

Goyal, A.; Saini, Jasmine

doi:10.1007/s13204-020-01538-0

Cited by 38 publications

(22 citation statements)

References 37 publications

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“…The optical properties and surface wave responses of the nano-photonic devices can be dynamically tuned by considering an external stimulus. This requires the integration of functional materials such as electro-optical (EO) materials [3][4][5], thermo-optical (TO) materials and phase change (PCM) materials [6][7][8][9] with conventional surface wave-based devices [10][11][12][13][14]. Additionally, the integrated material should possess a correspondingly large coefficient of variations.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of DAST Material-Assisted Photonic-Crystal-Based Electrical Tunable Optical Filter

2022

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In this paper, a 4-N,N-dimethylamino-4′-N′-methyl-stilbazolium tosylate (DAST) material assisted one-dimensional photonic-crystal-based (1D-PhC) tunable optical filter is presented. The design comprises a bilayer 1D-PhC structure having DAST as an electro-optic material. The device parameters are configured to filter out the 632.8 nm wavelength from the reflection spectrum. The analysis shows that by illuminating the device with poly-chromatic light at an incident angle of 45.07∘, the filtered wavelength exhibits transmission maxima having FWHM of less than 1nm. The analytical results also demonstrate the post fabrication 60 nm electrical tuning of the filtered wavelength by using only ±5 V applied potential. The structure also exhibits a very stable filter response up to 40% variations in optical thickness. Thus, the proposed design possesses the advantage in terms of low voltage wavelength tuning, stable response, easy fabrication and integration capability in integrated circuits.

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Section: Introductionmentioning

confidence: 99%

Performance Analysis of DAST Material-Assisted Photonic-Crystal-Based Electrical Tunable Optical Filter

2022

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“…It is clear that at every increase in concentration, the defect mode wavelength is red shifted, whereas the FWHM is almost constant to a value of 0.6 nm. The performance parameters of the proposed design, i.e., sensitivity (S), FWHM, and Figure- analysed and shown in Equation 9 [36][37][38],…”

Section: Bio-chemical (Hb) Sensing Analysismentioning

confidence: 99%

Design Analysis of One-Dimensional Photonic Crystal Based Structure for Hemoglobin Concentration Measurement

Goyal¹

2020

PIER M

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In this manuscript, a porous one-dimensional Photonic Crystal (1D-PhC) based sensor is designed for biochemical sensing application (i.e., hemoglobin concentration). The alternate layers of silicon are considered for design optimization, where the porosity is introduced to obtain the desired index contrast value. The sensing capability of the proposed design is enhanced by modifying the dispersion property of the structure. For this, a defect middle layer is deliberately introduced. The number of layers, defect layer optical thickness, and porosity values are optimized to confine a defect mode of desired wavelength. Finally, the detailed analysis of proposed structure is carried out. This provides the average sensitivity of around 323 nm/RIU (0.05 nm/(g/L) along with considerably higher Figure-of-merit (FOM) of 517 RIU −1 .

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“…This is accomplished by using a 1D-Photonic Crystal (1D-PhC) structure having a top defect layer of either dielectric or 2D materials, as shown in fig. 1 [6][7][8]. By optimizing the top defect layer optical properties and 1D-PhC refractive index contrast, a plasmonic-like mode called Optical Tamm mode (OTM) or Bloch Surface Wave (BSW) at the interface of 1D-PhC, and dielectric can be excited [9].…”

Section: Introductionmentioning

confidence: 99%

Theoretical Analysis of Dielectric Assisted Tamm Mode Excitation

Goyal

Pradhan

Massoud

2022

2022 IEEE 22nd International Conference on Nanotechnology (NANO)

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In this paper, a dielectric material assisted excitation mechanism is proposed to confine Tamm Modes at the dielectric-air interface. The performance analysis of proposed structure is performed using transfer matrix method (TMM). The design comprises a bilayer one-dimensional photonic crystal structure having a top defect layer. The defect layer thickness, and incident angles are optimized to confirm the Tamm mode confinement at an operating wavelength of 632.8nm. The proposed structure shows a strong Tamm mode localization for a defect layer thickness of 210nm. Whereas an evanescent Tamm mode is also excited for a lower defect layer thickness of around 170nm.

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Performance analysis of Bloch surface wave-based sensor using transition metal dichalcogenides

Cited by 38 publications

References 37 publications

Performance Analysis of DAST Material-Assisted Photonic-Crystal-Based Electrical Tunable Optical Filter

Performance Analysis of DAST Material-Assisted Photonic-Crystal-Based Electrical Tunable Optical Filter

Design Analysis of One-Dimensional Photonic Crystal Based Structure for Hemoglobin Concentration Measurement

Theoretical Analysis of Dielectric Assisted Tamm Mode Excitation

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