Results 21 to 30 of about 57,015 (288)

Self-Imaging Effect in Liquid-Filled Hollow-Core Capillary Waveguide for Sensing Applications

open access: yesSensors, 2019
A high sensitivity fiber-optic sensor based on self-imaging effect in a hollow-core capillary waveguide (HCCW) is presented for sensing applications. The sensor is composed of a section of HCCW fusion spliced between single mode fibers (SMFs).
Yijian Huang   +4 more
doaj   +1 more source

High-Sensitivity Detection of IgG Operating near the Dispersion Turning Point in Tapered Two-Mode Fibers

open access: yesMicromachines, 2020
The conventional methods for monitoring IgG levels suffer from some apparent problems such as long assay time, multistep processing, and high overall cost.
Bing Sun, Yiping Wang
doaj   +1 more source

Multi-Sensor System For Level Measurements With Optical Fibres [PDF]

open access: yes, 2002
A system for measuring liquid level in multiple tanks using optical fibre technology has been developed. The oil field service industry can benefit from this intrinsically safe technology.
Garcinuño, J.   +3 more
core   +2 more sources

In-sewer field-evaluation of an optical fibre-based condition monitoring system [PDF]

open access: yes, 2020
A Fiber Bragg Grating (FBG) based monitoring system for continuous humidity and temperature measurement has been designed and evaluated experimentally in a sewer environment with high corrosion rates, humidity and the presence of gaseous hydrogen sulfide.
Bustamante, H.   +6 more
core   +1 more source

Recent Advances in Biomedical Photonic Sensors: A Focus on Optical-Fibre-Based Sensing

open access: yesSensors, 2021
In this invited review, we provide an overview of the recent advances in biomedical photonic sensors within the last five years. This review is focused on works using optical-fibre technology, employing diverse optical fibres, sensing techniques, and ...
Mario Ochoa   +4 more
doaj   +1 more source

Design of a new method for detection of occupancy in the smart home using an FBG sensor [PDF]

open access: yes, 2020
This article introduces a new way of using a fibre Bragg grating (FBG) sensor for detecting the presence and number of occupants in the monitored space in a smart home (SH).
Fajkus, Marcel   +3 more
core   +1 more source

An Optical Fibre Depth (Pressure) Sensor for Remote Operated Vehicles in Underwater Applications

open access: yesSensors, 2017
A miniature sensor for accurate measurement of pressure (depth) with temperature compensation in the ocean environment is described. The sensor is based on an optical fibre Extrinsic Fabry-Perot interferometer (EFPI) combined with a Fibre Bragg Grating ...
Dinesh Babu Duraibabu   +8 more
doaj   +1 more source

Evaluation of the optical switching characteristics of erbium-doped fibres for the development of a fibre Bragg grating sensor interrogator [PDF]

open access: yes, 2014
A polling topology that employs optical switching based on the properties of erbium-doped fibres (EDFs) is used to interrogate an array of FBGs. The properties of the EDF are investigated in its pumped and un-pumped states and the EDFs’ switching ...
Bhattacharyya, Debabrata   +7 more
core   +1 more source

Secure and Efficient Key Coordination Algorithm for Line Topology Network Maintenance for Use in Maritime Wireless Sensor Networks

open access: yesSensors, 2016
There has been a significant increase in the proliferation and implementation of Wireless Sensor Networks (WSNs) in different disciplines, including the monitoring of maritime environments, healthcare systems, and industrial sectors.
Walid Elgenaidi   +4 more
doaj   +1 more source

Fiber Taper-Based Mach–Zehnder Interferometer for Ethanol Concentration Measurement

open access: yesMicromachines, 2019
We present a new type of fiber Mach−Zehnder interferometer based on a fiber taper and a pair of inner air bubbles for highly sensitive ethanol concentration measurement.
Changrui Liao   +3 more
doaj   +1 more source

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