Silicon Nanowire Optical Rectangular Waveguide Biosensor for DNA Hybridization

Singh, Ritu Raj; Priye, Vishnu

doi:10.1109/lpt.2018.2835152

Cited by 12 publications

(4 citation statements)

References 15 publications

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“…Consequently, the remaining bunch of silicon nanowires works as a waveguide, which seems to be similar with silicon bulk rectangular waveguide only in context of mode envelope pattern. These silicon nanowires are in vertical rod-shaped sub-wavelength structure, and the resultant waveguide is known as 'silicon nanowire optical rectangular waveguide' (SNORW) [26][27][28][29]. In SNORW, nanowire rods having high refractive index are vertically aligned on the surface of substrate material in an arrayed pattern.…”

Section: Snorw Structurementioning

confidence: 99%

“…Spacing between nanowires is found to be one of the crucial parameters for shadowing effect. Optical field intensity and confinement factor are found to be quite high inside nano-slots of SNORW as compared to slot optical waveguide [26][27][28][29][30]. Thus, dispersion engineering is required to utilize SNORW as sub-wavelength structure in linear and nonlinear optical devices.…”

Section: Introductionmentioning

confidence: 99%

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Dispersion tailoring of silicon nanowire optical rectangular waveguide (SNORW)

Singh

2020

SN Appl. Sci.

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Dispersion analysis on silicon nanowire optical rectangular waveguide (SNORW) has been presented in this paper by guiding light inside low refractive index region. Dispersion engineering is an essential study to utilize any photonic integrated circuit-based waveguide in linear and nonlinear optical devices. This paper exhibits distinctive dispersion characteristics recognized in the wavelengths of S, C and L bands by tailoring physical parameters of SNORW. Modal investigation and numerical analysis have been carried out by finite element method (FEM), which shows that SNORW configuration enables the flat and low negative dispersion behavior. This paper also demonstrates the utilization of cladding materials and structural parameters of SNORW to tune the magnitude and behavior of dispersion for flat dispersion profile.

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Section: Snorw Structurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dispersion tailoring of silicon nanowire optical rectangular waveguide (SNORW)

Singh

2020

SN Appl. Sci.

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“…Silicon nanowire with its applications is explored in various fields of photonics, such as photovoltaic cells [25], lithium batteries [28], field effect transistors [29], and photo-detectors [30]. Apart from applications in photonics, silicon nanowires are also applicable in various chemical [31], gas [32], and biosensor devices [33], [34]. In addition, a closely packed bunch of silicon nanowires are preferred for guiding of optical waves, which is been studied in this research paper with theoretical justification.…”

Section: Introductionmentioning

confidence: 99%

“…As time moves on, the evolution of a very special type of waveguide based on the working property of slot waveguide evolved, which is silicon nanowire-based waveguide [7]- [9]. The waveguide formation using vertically aligned silicon wires makes it more susceptible with high surface to volume ratio of guiding mode pattern [10], [11]. This motivated to investigate wave solution of silicon nanowire-based structure, which is not appeared in any literature so far.…”

Section: Introductionmentioning

confidence: 99%

Analytical Prediction for Quasi-TE mode in Silicon Nanowire Optical Rectangular Waveguide

Singh

Priye

2021

Preprint

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Theoretical and numerical mode estimation performed on Silicon Nanowire Optical Rectangular Waveguide (SNORW) is presented for on-chip communication in photonic integrated circuits. The propagation behavior of electric and magnetic fields is investigated, where zeroth order mode is found dominating inside the nanoslot region of SNORW for the circularly symmetric quasi-TE mode to propagate. This SNORW structure supports hybrid mode, which derives its behavioral root from the rectangular waveguide and functional root from the slot waveguide. In periodic silicon nanowire-based waveguide, it is found that the envelope of mode field intensity closely matches with rectangular waveguide and the guiding properties closely matches with slot waveguide. The type of mode is analyzed by full vectorial Finite Element Method (FEM) and the analytical expression is derived using Effective Index Method (EIM). Analytical expressions are used to express Quasi-TE mode in term of material profile and waveguide physical parameters. The results obtained for SNORW in S, C and L wavelength bands are compared with the earlier reported work on slot waveguide, and the field intensity obtained with the theoretical equations is also compared with that of FEM results.

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Analytical prediction for quasi-TE mode in silicon nanowire optical rectangular waveguide

Singh

Priye

2022

J Comput Electron

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Silicon Nanowire Optical Rectangular Waveguide Biosensor for DNA Hybridization

Cited by 12 publications

References 15 publications

Dispersion tailoring of silicon nanowire optical rectangular waveguide (SNORW)

Dispersion tailoring of silicon nanowire optical rectangular waveguide (SNORW)

Analytical Prediction for Quasi-TE mode in Silicon Nanowire Optical Rectangular Waveguide

Analytical prediction for quasi-TE mode in silicon nanowire optical rectangular waveguide

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