Temperature-controlled waveguide properties of the linearly graded-index film in the photorefractive crystal

Савотченко, С. Е.

doi:10.1007/s00340-022-07950-4

Cited by 4 publications

(1 citation statement)

References 62 publications

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“…Refractive index modulation is another widely explored method to study the band-gap features of the PhC structures. Recently in 2023, Savotchenko considered parabolic and linear refractive index profile-based structures to study the new type of surface wave propagation and described its wave-guiding properties 27 , 28 . The refractive index modulation-assisted 1D-PhC designs are widely explored to study the bandgap properties.…”

Section: Introductionmentioning

confidence: 99%

Exponentially index modulated nanophotonic resonator for high-performance sensing applications

Dash

Saini

Goyal

et al. 2023

Sci Rep

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In this manuscript, a novel photonic crystal resonator (PhCR) structure having an exponentially graded refractive index profile is proposed to regulate and alter the dispersion characteristics for the first time. The structure comprises silicon material, where porosity is deliberately introduced to modulate the refractive index profile locally. The structural parameters are optimized to have a resonant wavelength of 1550 nm. Further, the impact of various parameters like incidence angle, defect layer thickness, and analyte infiltration on device performance is evaluated. Finally, the sensing capability of the proposed structure is compared with the conventional step index-based devices. The proposed structure exhibits an average sensitivity of 54.16 nm/RIU and 500.12 nm/RIU for step index and exponentially graded index structures. This exhibits the generation of a lower energy resonating mode having 825% higher sensitivity than conventional resonator structures. Moreover, the graded index structures show a 45% higher field confinement than the conventional PhCR structure.

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Section: Introductionmentioning

confidence: 99%

Exponentially index modulated nanophotonic resonator for high-performance sensing applications

Dash

Saini

Goyal

et al. 2023

Sci Rep

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Surface waves propagating along an interface between media with an exponential spatial profile of the dielectric function and an abruptly appearance of a self-focusing nonlinear response in a near-surface layer at the strong light intensity

Савотченко

2023

Opt Quant Electron

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Transverse electric waves in three-layered waveguide structure with a parabolic spatial profile of the dielectric constant, optical linear and nonlinear layers

Savotchenko

2024

Optik

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Temperature-controlled waveguide properties of the linearly graded-index film in the photorefractive crystal

Cited by 4 publications

References 62 publications

Exponentially index modulated nanophotonic resonator for high-performance sensing applications

Exponentially index modulated nanophotonic resonator for high-performance sensing applications

Surface waves propagating along an interface between media with an exponential spatial profile of the dielectric function and an abruptly appearance of a self-focusing nonlinear response in a near-surface layer at the strong light intensity

Transverse electric waves in three-layered waveguide structure with a parabolic spatial profile of the dielectric constant, optical linear and nonlinear layers

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