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Results in Optics
Scopus
ISSN 2666-9501 · Elsevier · 1,102 articles in the index
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Journal Article
Development of a high-performance 16-to-4 electro-optical encoder using photonic crystal resonant cavities
This paper presents a novel 16-input, 4-output electro-optical encoder utilizing tunable resonant cavities. Light transmission through a silicon waveguide is modulated by a nearby photonic crystal cavity comprising 20 air holes. These air holes form a resonant cavity, filtering out unwanted…
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Journal Article
Low cost dry ice blaster for in situ cleaning of sensitive optics
This paper presents a specialized dry ice blaster (DIB) designed for in situ cleaning of sensitive optical components. The DIB can be fabricated with fused deposition modeling (FDM) 3D printers. Results are presented for cleaning performed on highly contaminated laser cutter optics, unprotected…
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Journal Article
StructuredLight-GNN: A graph neural network for end-to-end structured light 3D point cloud processing
To address the core challenges of complex noise, insufficient feature utilization, and poor task collaboration in structured light 3D scanning, this paper presents a graph neural network, named StructuredLight-GNN. By integrating confidence-aware mechanisms, attention mechanisms, and multi-scale…
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Journal Article
Effect of poly(3-hexylthiophene) morphology formation on third-order nonlinear optical under green continuous wave excitation
Optically tunable devices can be realized through structural modifications of semiconducting polymers, which also moderate their inherent performance limitations. In this study, the susceptibility of poly(3-hexylthiophene) (P3HT) to degradation and morphological collapse is mitigated by…
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Journal Article
Highly sensitive and high Q-factor photonic crystals serially coupled hexagonal resonator for pressure sensing
The work explores an SOI-based pressure sensor that operates up to a maximum pressure of 12 MPa and is modeled and analyzed using the finite element method and the finite difference time domain Method. The structure consists of a serially coupled double hexagonal ring between the two straight…
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Journal Article
Gouy phase for higher-order Gaussian modes
The Iwasawa decomposition of a ray transfer matrix and its unitary metaplectic counterpart is effectively used to solve for the evolution of a Hermite–Gaussian mode through a rotationally symmetric first-order optical system. Gouy phase as picked by an arbitrary Hermite–Gaussian mode with arbitrary…
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Journal Article
Efficient synthesis of Gd-doped ZnWO₄@GO composite and investigation of luminescence properties
This work investigates the structural, multi-excitation luminescence, and alpha-induced scintillation properties of a Gd-doped zinc tungstate/graphene oxide (ZnWO₄/GO: Gd) ternary nanocomposite. Pristine ZnWO₄, GO, and the ZnWO₄/GO: Gd composite were synthesized via a facile co-precipitation route…
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Journal Article
Morphological and deposition temperature dependence of the nonlinear optical responses in nanostructures MoS2 thin films synthesized by the metal organic chemical vapor deposition
The morphological and nonlinear optical properties of Molybdenum disulfide MoS 2 thin films, deposited by metal organic chemical vapor deposition at different temperatures, were studied. The morphology of the films, were determined by scanning electron microscopy and the structure was investigated…
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Journal Article
Broadband spectral metrology for robust diffraction-based overlay estimation under process-induced asymmetry
Diffraction-based overlay (DBO) metrology infers registration error from diffraction responses, but process-induced geometry can generate confounding optical signatures. This work investigates FDTD-guided broadband spectral metrology using the raw TE/TM ± 1 st-order diffraction efficiencies at 61…
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Journal Article
Physics-informed modeling of photonic lantern collection gain and diversity in free-space optical reception
Photonic lanterns interface distorted free-space optical fields with coherent single-mode receivers by converting a multimode field into multiple single-mode branches that can be coherently combined. Recent measurements report a pronounced near-field collection gain for photonic-lantern-assisted…
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Journal Article
Comprehensive analysis of 6G optical NOMA waveforms using neural network-based detection for high-order QAM modulation
This paper presents a comprehensive investigation of sixth-generation (6G) optical non-orthogonal multiple access (NOMA) waveform performance using high-order quadrature amplitude modulation (QAM) schemes ranging from 64-QAM to 512-QAM, with emphasis on detection reliability and spectral efficiency…
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Journal Article
LiNoPulse: ultrafast nonlinear pulse propagation in thin-film lithium niobate waveguides
This study focuses on a numerical analysis of ultrafast nonlinear optical pulses in thin-film lithium niobate (TFLN) waveguides. It investigates the interaction of group-velocity dispersion (GVD), Kerr nonlinear self-phase modulation (SPM), confinement of optical pulses and propagation loss on the…
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Journal Article
Integrated photonic platforms based on femtosecond laser-inscribed S-bend and Y-branch waveguides in Nd
This work reports the fabrication and characterization of active double-line waveguide structures produced by femtosecond laser irradiation in Nd 3+ -doped GeO₂–PbO glass embedded with silver nanoparticles. Straight, S-bend, and Y-branch configurations were investigated aiming at photonic…
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Journal Article
Photocatalytic desulfurization of real fuel by the synthesis of CdO/g-C
Photocatalytic oxidative desulfurization has emerged as a promising alternative to conventional hydrodesulfurization for producing ultra-low-sulfur fuels under mild operating conditions. In this study, a visible-light-responsive CdO/g-C₃N₄ heterojunction nanocomposite was successfully synthesized…
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Journal Article
Coherent optical control of single-photon scattering phase in cryogenic rare-earth ion–doped yttrium orthosilicate nanocavities for quantum memory synchronization
This research presents the development and performance analysis of a cryogenic rare-earth-ion–doped yttrium orthosilicate (YSO) nanocavity system for phase-sensitive quantum memory synchronization and coherent optical communication applications. The nanocavity structure was fabricated using focused…
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Journal Article
Tunable broadband terahertz absorber based on a Canada-flag-inspired graphene metasurface
A compact and electrically tunable broadband terahertz (THz) absorber based on a Canada-flag-inspired graphene metasurface is proposed and numerically investigated. The absorber consists of a patterned graphene layer separated from a gold back-reflector by a low-index dielectric spacer. Its…
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Journal Article
Quantitative study of silicon waveguides for the generation of quantum correlated photon pairs bridging mid-infrared and telecom bands
Sources of quantum correlated photons pairs bridging the 3 μm–4 μm Mid-infrared (MIR) band and Telecom/Near-Infrared/Visible band are of high importance for quantum technologies. Spontaneous Parametric Down Conversion is generally used for realizing such sources, but requires costly implementation…
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Journal Article
Inflection point detection and reconstruction on freeform surfaces using the root-bracketing model, ray-traced fringe simulation, and Zernike polynomials
Freeform optical surfaces often contain curvature-transition regions (inflection points) that are critical for optical performance and manufacturing, yet their identification becomes challenging when only discretely sampled data and limited-aperture measurements are available. This work presents a…
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Journal Article
Design and analysis of multimode step-index multicore silica photonic crystal fibers for communication and sensing applications
The increasing demand for bandwidth in optical fiber communication has accelerated the adoption of space-division multiplexing (SDM), while compact platforms capable of simultaneous multisolute sensing are also highly desirable. In this work, a novel nine-core multimode step-index silica multicore…
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