Results 31 to 40 of about 89,955 (290)
A Highly Magnetic Field Sensitive Photonic Crystal Fiber Based on Surface Plasmon Resonance
Sensors, 2020 A novel magnetic field sensor comprising a photonic crystal fiber (PCF) is designed and investigated based on surface plasmon resonance (SPR). We use finite element analysis in order to analyze the sensing characteristics of the magnetic field sensor ...
Huimin Huang +6 more
doaj +1 more source
Optimisation of distributed feedback laser biosensors [PDF]
, 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
Microring resonator refractive index sensor with integrated spectrometer [PDF]
, 2015 We present a SOI ring based sensor read-out system. The novelty of the architecture lies in the capability to sense the shifts of multiple peaks simultaneously with an integrated AWG ...
Bogaerts, Wim +2 more
core +2 more sources
Dual-wavelength Highly-sensitive refractive index sensor
Optics Express, 2017 We report and demonstrate a highly-sensitive refractive index (RI) sensor based on a linear-cavity dual-wavelength erbium-doped fiber laser (DWEDFL). The optical spectrum of the laser varies as the external environmental RI changes from 1.3 to 1.335.
Shun, Wang +4 more
openaire +2 more sources
Ultrasensitive tapered optical fiber refractive index glucose sensor
Scientific Reports, 2023 AbstractRefractive index (RI) sensors are of great interest for label-free optical biosensing. A tapered optical fiber (TOF) RI sensor with micron-sized waist diameters can dramatically enhance sensor sensitivity by reducing the mode volume over a long distance.
Erem Ujah, Meimei Lai, Gymama Slaughter
openaire +3 more sources
Numerical investigation into a surface plasmon resonance sensor based on optical fiber microring
Photonic Sensors, 2017 A reflective surface plasmon resonance (SPR) sensor based on optical fiber microring is proposed. In such a sensor, plasmons on the outer surface of the metallized channels containing analyte can be excited by a fundamental mode of a thin-core fiber (TCF)
Chunliu Zhao +3 more
doaj +1 more source
Bent Fiber Sensor for Preservative Detection in Milk
Sensors, 2016 A fiber optic sensor sensitive to refractive index changes of the outer region of the fiber cladding is presented. The sensor uses bent plastic optical fibers in different bending lengths to increase sensitivity.
Omer Galip Saracoglu, Sekip Esat Hayber
doaj +1 more source
Use of polyethylene glycol coatings for optical fibre humidity sensing [PDF]
, 2008 Humidity induced change in the refractive index and thickness of the polyethylene glycol (PEG) coatings are in situ investigated for a range from 10 to 95%, using an optical waveguide spectroscopic technique.
B. D. Gupta +31 more
core +2 more sources
Universal scaling of plasmonic refractive index sensors
Optics Express, 2013 We establish experimental and numerical evidence that the refractive index sensitivities of various subwavelength plasmonic sensors obey a simple universal scaling relation that the sensitivities linearly increase with λm/neff (where λm is the resonant wavelengths and neff is the effective refractive index of the environment) and exhibit a slope equal ...
Yen-Kai, Chang +3 more
openaire +2 more sources
, 2012 We present a metamaterial-based terahertz (THz) sensor for thickness measurements of subwavelength-thin materials and refractometry of liquids and liquid mixtures.
Beigang, René +5 more
core +1 more source