Results 21 to 30 of about 90,044 (345)

Refractive index sensor based on the leaky radiation of a microfiber [PDF]

open access: yesOptics Express, 2014
9 pages, 9 ...
Shining Zhu   +4 more
openaire   +4 more sources

Liquid-core low-refractive-index-contrast Bragg fiber sensor [PDF]

open access: yes, 2011
We propose and experimentally demonstrate a low-refractive-index-contrast hollow-core Bragg fiber sensor for liquid analyte refractive index detection. The sensor operates using a resonant sensing principle- when the refractive index of a liquid analyte ...
Hang Qu   +2 more
core   +1 more source

Some Advanced Fiber-Optical Amplitude Modulated Reflection Displacement and Refractive Index Sensors

open access: yesNonlinear Analysis, 2007
Some advanced fiber-optic amplitude modulated reflection displacement sensors and refractive index sensors have been developed. An improved three-fiber displacement sensor has been investigated as a refractive index sensor by computer simulations in a ...
V. Kleiza, J. Verkelis
doaj   +1 more source

Exploiting Brillouin Sensors for Refractive Index Measurements [PDF]

open access: yesProceedings of the 5th International Symposium on Sensor Science (I3S 2017), 2017
In this paper, we investigate the capability of a Brillouin Optical Time-Domain Analysis [...]
Aldo Minardo   +3 more
openaire   +3 more sources

Optimisation of distributed feedback laser biosensors [PDF]

open access: yes, 2007
A new integrated optical sensor chip is proposed, based on a modified distributed- feedback (DFB) semiconductor laser. The semiconductor layers of different refractive indices that comprise a laser form the basis of a waveguide sensor, where changes in ...
Coote, J, Reddy, Subrayal M, Sweeney, SJ
core   +1 more source

Figure of Merit Enhancement of a Surface Plasmon Resonance Sensor Using a Low-Refractive-Index Porous Silica Film

open access: yesSensors, 2017
In this paper; the surface plasmon resonance (SPR) sensor with a porous silica film was studied. The effect of the thickness and porosity of the porous silica film on the performance of the sensor was analyzed.
Qing-Qing Meng   +5 more
doaj   +1 more source

Fano Resonance Based on Metal-Insulator-Metal Waveguide-Coupled Double Rectangular Cavities for Plasmonic Nanosensors

open access: yesSensors, 2016
A refractive index sensor based on metal-insulator-metal (MIM) waveguides coupled double rectangular cavities is proposed and investigated numerically using the finite element method (FEM).
Zhidong Zhang   +4 more
doaj   +1 more source

The realization of an integrated Mach-Zehnder waveguide immunosensor in silicon technology [PDF]

open access: yes, 1997
We describe the realization of a symmetric integrated channel waveguide Mach-Zehnder sensor which uses the evanescent field to detect small refractive-index changes (¿nmin ¿ 1 × 10¿4) near the guiding-layer surface.
Brugman, A.M.   +5 more
core   +2 more sources

High Sensitivity Refractive Index Sensor Based on Dual-Core Photonic Crystal Fiber with Hexagonal Lattice

open access: yesSensors, 2016
A refractive index sensor based on dual-core photonic crystal fiber (PCF) with hexagonal lattice is proposed. The effects of geometrical parameters of the PCF on performances of the sensor are investigated by using the finite element method (FEM).
Haiyang Wang   +4 more
doaj   +1 more source

Plasmonic circular resonators for refractive index sensors and filters [PDF]

open access: yesNanoscale Research Letters, 2015
Abstract A plasmonic refractive index sensor based on a circular resonator is proposed. With all three dimensions below 1 μm, the sensor has a compact and simple structure granting it ease-of-fabrication and ease-of-use. It is capable of sensing trace amounts of liquid or gas samples.
Xiaomin Ren, Wei Wei, Xia Zhang
openaire   +3 more sources

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