Guided-mode resonance strain sensors are planar binary gratings that have fixed resonance positions and quality factors decided by material properties and grating parameters. If one is restricted by material choices, the quality factor can only be improved by adjusting the grating parameters. We report a new method to improve quality factor by applying a slotting design rule to a grating design. We investigate this design rule by first providing a theoretical analysis on how it works and then applying it to a previously studied 2D solid-disc guided-mode resonance grating strain sensor design to create a new slotted-disc guided-mode resonance grating design. We then use finite element analysis to obtain reflection spectrum results that show the new design produces resonances with at least a 6-fold increase in quality factor over the original design and more axially-symmetric sensitivities. Lastly, we discuss the applicability of the slotting design rule to binary gratings in general as a means of improving grating performance while retaining both material and resonance position choices.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6929076 | PMC |
| http://dx.doi.org/10.3390/s19235223 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Coexistence of the Radial-Guided Mode and WGM in Azimuthal-Grating-Integrated Microring Lasers.
ACS Photonics
December 2024
Graduate School and Faculty of Information Science and Electrical Engineering, Kyushu University, 744 Motooka Nishi-ku, Fukuoka, 819-0395, Japan.
Whispering-gallery mode (WGM) resonators, renowned for their high Q-factors and narrow line widths, are widely utilized in integrated photonics. Integrating diffraction gratings onto WGM cavities has gained significant attention because these gratings function as azimuthal refractive index modulators, enabling single-mode WGM emissions and supporting beams with orbital angular momentum (OAM). The introduction of curved grating structures facilitates guided mode resonances by coupling high-order diffracted waves with leaking modes from the waveguide.
View Article and Find Full Text PDFHigh-Sensitivity, High-Resolution Miniaturized Spectrometers for Ultraviolet to Near-Infrared Using Guided-Mode Resonance Filters.
Molecules
November 2024
School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
Miniaturized spectrometers have significantly advanced real-time analytical capabilities in fields such as environmental monitoring, healthcare diagnostics, and industrial quality control by enabling precise on-site spectral analysis. However, achieving high sensitivity and spectral resolution within compact devices remains a significant challenge, particularly when detecting low-concentration analytes or subtle spectral variations critical for chemical and molecular analysis. This study introduces an innovative approach employing guided-mode resonance filters (GMRFs) to address these limitations.
View Article and Find Full Text PDFHybrid plasmonic metamaterials: towards enhanced ultra broadband and wide-angle solar absorption for energy harvesting.
Phys Chem Chem Phys
January 2025
Department of Electrical Engineering, Faculty of Engineering, University of Zabol, 9861335856 Zabol, Iran.
In this paper, we have investigated a hybrid metamaterial seven-layer solar absorber. The absorber has remarkable characteristics, including ultra-broadband perfect absorption capability, near-perfect absorption at wide angles, and insensitivity to polarization. The structure exhibits an average absorption of 98.
View Article and Find Full Text PDFHighly Regular Laser-Induced Periodic Surface Structures on Titanium Thin Films for Photonics and Fiber Optics.
ACS Appl Mater Interfaces
December 2024
Institute of Automation and Electrometry of the SB RAS, 1 Acad. Koptyug Ave., 630090 Novosibirsk, Russia.
Modern photonic devices demand low-cost, scalable methods for creating periodic patterns over diverse surfaces including nonplanar and tipped ones, the examples of which can be readily found in fiber optics. Laser-induced periodic surface structures (LIPSS) offer an attractive route for fabricating such patterns in a single-step straightforward procedure, where the temporal and spatial locality of the self-interference effects ensure robustness against variations of the laser processing parameters. In this work, we show the LIPSS-assisted oxidation of thin titanium films by near-IR femtosecond laser pulses as a promising technology for the production of regular gratings consisting of rutile ridges.
View Article and Find Full Text PDFDirectionally tunable co- and counterpropagating photon pairs from a nonlinear metasurface.
Nanophotonics
August 2024
ARC Centre of Excellence for Transformative Meta-Optical Systems (TMOS), Department of Electronic Materials Engineering, Research School of Physics, The Australian National University, Canberra, ACT 2600, Australia.
Article Synopsis
- * This study showcases the first-ever precise control of the emission angle for photon pairs generated in a nonlinear metasurface, achieving high-quality coincidence ratios in the emitted light.
- * A silicon dioxide grating on a nonlinear lithium niobate layer was used to facilitate this control, and the findings suggest potential for further improvements through modulation techniques, enhancing the capabilities of photon-pair sources.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!