Results 91 to 100 of about 18,423 (164)

Lossy mode resonances supported by TiO2 -coated optical fibers

open access: yesProcedia Engineering, 2010
AbstractAn optical fiber refractometer based on lossy mode resonance (LMR) supported by a TiO2 coating has been designed and fabricated for the first time. The Layer by Layer (LbL) method, used to deposit the film, makes possible to tune the sensitivity and the operation wavelength of the device. The LMR absorption peak, located in the infra-red region,
Hernaez, M.   +4 more
openaire   +1 more source

Tunable electro-optic wavelength filter based on lossy-guided mode resonances

open access: yesOptics Express, 2013
In this work an optical fiber tunable filter based on lossy guided-mode resonances (LGMR) is proposed. It consists of a multilayer structure deposited onto the surface of a plastic cladding removed multimode fiber. The first layer is used to generate the LGMR and to work as the first electrode as well; the second one to tune the filter and the outer ...
Corres Sanz, Jesús María   +3 more
openaire   +4 more sources

Nonlinearly Tunable Fano Resonance in One-Dimensional Light Tunneling Heterostructure

open access: yesPhotonics
In this paper, we theoretically investigate nonlinearly tunable Fano resonance by employing a light tunneling heterostructure with one-dimensional defective photonic crystals and a lossy metallic film. We find that the phenomenon of Fano resonance can be
Wenzhe He   +5 more
doaj   +1 more source

Short-wavelength transmission-loss suppression in fibre Bragg gratings

open access: yes, 1997
Fibre Bragg Gratings (FBGs) are known to suffer from short-wavelength, transmission losses due to resonant coupling into backward-propagating cladding modes. Figure 1 shows a typical transmission spectrum of a 10cm standard FBG.
Ibsen, M., Laming, R.I., Zervas, M.N.
core  

Generation of leaky mode resonance and lossy mode resonance with the same optical platform

open access: yesOptics Express
Leaky mode resonance (LeMR) and lossy mode resonance (LoMR) refer to two different surface waves but are easily confused. Herein, we comprehensively investigated the excitation mechanism and sensing performance of both LeMR and LoMR with the same prism-film-surrounding platform based on the rigorous transfer matrix method.
Zhihong Li   +5 more
openaire   +1 more source

Machine Learning Enhanced Lossy Mode Resonance Fiber Optic Sensors With Spectral Feature Engineering for Ethanol Adulteration Detection

open access: yesIEEE Access
This study presents the numerical potential of Lossy Mode Resonance (LMR)-based fiber-optic sensors for detecting methanol adulteration of ethanol. Three materials, antimony trioxide ( $Sb_{2}O_{3}$ ), titanium dioxide ( $TiO_{2}$ ), and indium tin oxide
R. Sreekanth, S. Abraham Sampson
doaj   +1 more source

Inverting the thermal radiative contrast of vanadium dioxide by metasurfaces based on localized gap-plasmons

open access: yesAPL Photonics, 2018
Vanadium dioxide (VO2) is a promising phase-change material (PCM) in controlling radiative heat transfer because of the large permittivity contrast between the phases and the moderate metal-insulator transition temperature of 340 K.
Kota Ito   +4 more
doaj   +1 more source

Electropolymerized Dopamine Film-Modified Optical Fiber LMR Biosensor for Immunoassay

open access: yesPhotonic Sensors
In producing high-performance optical biosensors, the selected coupling agent and its fixation mode play an essential role as one of the decisive conditions for antibody incubation.
Xiaoshuang Dai   +8 more
doaj   +1 more source

Analytical, Numerical, and Experimental Investigation of an Eccentric Double-Ring Microwave Resonator for Electromagnetic Shielding Applications

open access: yesApplied Sciences
This study presents an in-depth investigation of an eccentric double-ring microwave resonator comprising two asymmetrically coupled conductive loops connected at a single point.
Slavko Rupčić   +2 more
doaj   +1 more source

Non-scattering Metasurface-bound Cavities for Field Localization, Enhancement, and Suppression

open access: yes, 2019
We propose and analyse metasurface-bound invisible (non-scattering) partially open cavities where the inside field distribution can be engineered.
Asadchy, V. S.   +7 more
core  

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