Results 1 to 10 of about 22,619 (253)
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
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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
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Optical Waveguide Refractive Index Sensor for Biochemical Sensing
Applied Sciences, 2023 This study describes the basic principles of optical waveguide refractive index sensing and the various design structures of refractive index sensors. These waveguides generate different optical resonances, which cause changes in the sensing refractive ...
Cheng Peng +7 more
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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
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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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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
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Sensors, 2016 We report the optimization of the length of a D-shaped plastic optical fiber (POF) sensor for refractive index (RI) sensing from a numerical and experimental point of view. The sensing principle is based on total internal reflection (TIR). POFs with 1 mm
Filipa Sequeira +6 more
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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
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Mode Characteristics and Sensing Performance of Fiber Gratings
Journal of Harbin University of Science and Technology, 2022 Fiber gratings are special optical fibers with a periodic refractive index distribution when the refractive index of the fiber core is modulated. Both the angle and period of the gratings have an influence on the sensing properties of the fiber gratings.
ZHANG Jun-xi +3 more
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Random Raman Fiber Laser as a Liquid Refractive Index Sensor
Photonic Sensors, 2023 In this paper, a new concept of forward-pumped random Raman fiber laser (RRFL)-based liquid refractive index sensing is proposed for the first time.
Bing Han, Yuxi Ma, Han Wu, Yong Zhao
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