Permittivity-asymmetric qBIC metasurfaces for refractive index sensing [PDF]
NanophotonicsBound states in the continuum (BICs) provide exceptional light confinement due to their inherent decoupling from radiative channels. Small symmetry breaking transforms BIC into quasi-BIC (qBIC) that couples to free-space radiation enabling ultra-high ...
Yang Xingye +3 more
doaj +6 more sources
Distributed Refractive Index Sensing Based on Etched Ge-Doped SMF in Optical Frequency Domain Reflectometry [PDF]
Sensors, 2023 A distributed optical fiber refractive index sensor based on etched Ge-doped SMF in optical frequency domain reflection (OFDR) was proposed and demonstrated. The etched Ge-doped SMF was obtained by only using wet-etching, i.e., hydrofluoric acid solution.
Cailing Fu +7 more
doaj +2 more sources
All-LCP Terahertz Metasensor with Dual Quasi-BIC Resonances for Dual-Range Refractive Index Sensing [PDF]
BiosensorsTerahertz (THz) metasurface biosensors still encounter difficulties in simultaneously achieving high spectral resolution and stable readout across different refractive-index regimes.
Yan Zhang +7 more
doaj +2 more sources
Integrated Microfibre Device for Refractive Index and Temperature Sensing [PDF]
Sensors, 2012 A microfibre device integrating a microfibre knot resonator in a Sagnac loop reflector is proposed for refractive index and temperature sensing. The reflective configuration of this optical structure offers the advantages of simple fabrication and ease ...
Sulaiman W. Harun +5 more
doaj +3 more sources
Nanophotonics, 2023 Metasurface provides a novel way to modulate light energy at specific wavelengths, namely resonances, where there is a sharp drop in the transmission spectrum.
Chen Wenjie +3 more
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Refractive-Index Sensing with Ultrathin Plasmonic Nanotubes [PDF]
Plasmonics, 2012 We study the refractive-index sensing properties of plasmonic nanotubes with a dielectric core and ultra-thin metal shell. The few-nm thin metal shell is described by both the usual Drude model and the nonlocal hydrodynamic model to investigate the effects of nonlocality.
Giuseppe Toscano +2 more
exaly +4 more sources
Plasmonic anapole metamaterial for refractive index sensing [PDF]
PhotoniX, 2022 Electromagnetic anapole mode is a nonradiative state of light originating from the deconstructive interference of radiation of the oscillating electric and toroidal dipole moments.
Jin Yao +6 more
doaj +4 more sources
Whispering-Gallery Mode Micro-Ring Resonator Integrated with a Single-Core Fiber Tip for Refractive Index Sensing [PDF]
Sensors, 2023 A micro-ring resonator structure was fabricated via the two-photon polymerization technique directly on a single-mode fiber tip and tested for refractive index sensing application. The micro-ring structure was used to excite whispering-gallery modes, and
Monika Halendy, Sławomir Ertman
doaj +2 more sources
Refractive index sensing with optical bound states in the continuum
Optics Express, 2020 We consider refractive index sensing with optical bounds states in the continuum (BICs) in dielectric gratings. Applying a perturbative approach we derived the differential sensitivity and the figure of merit of a sensor operating in the spectral vicinity of a BIC. Optimisation design approach for engineering an effective sensor is proposed.
Valeriy Gerasimov +2 more
exaly +4 more sources
High sensitivity refractive index sensing using zone plate metasurfaces with a conical phase profile [PDF]
Scientific Reports, 2022 In this paper, we showed how a bulky Axicon lens can be transformed to a compact binary zone plate with conical phase profile. We built three zone plates made of three different materials and designed each zone plate to be used in high sensitivity ...
Manar Abdel-Galil +3 more
doaj +2 more sources