Results 21 to 30 of about 36,597 (305)

A Composite Fabry-Perot Interferometric Sensor with the Dual-Cavity Structure for Simultaneous Measurement of High Temperature and Strain

open access: yesSensors, 2021
In this paper, an optical fiber composite Fabry-Perot interferometric (CFPI) sensor capable of simultaneous measurement of high temperature and strain is presented.
Ping Xia   +4 more
doaj   +1 more source

Photonic crystal as a refractometric sensor operated in reflection mode

open access: yesSuperlattices and Microstructures, 2017
Abstract In this work, one dimensional ternary photonic crystal is investigated as refractometric sensor. Using Chebyshev polynomials of the second kind, the transmission of an incident wave from a ternary photonic crystal is studied in details. The variation of the transmissivity with the angle of incidence and wavelength of incident light for ...
Taya, Sofyan A.   +2 more
openaire   +2 more sources

Models, reflective mechanisms and family-based systems to support dynamic configuration [PDF]

open access: yes, 2006
Middleware platforms must satisfy an increasingly broad and variable set of requirements arising from the needs of both applications and underlying systems deployed in dynamically changing environments such as environment monitoring and disaster ...
P. Grace   +5 more
core   +1 more source

Compact Harmonic Vernier Sensor Based on an In-Fiber FPI with Three Reflector System for Simultaneous Gas Pressure and Temperature Measurement

open access: yesSensors, 2023
In this work, we proposed a sensitivity-enhanced temperature sensor, a compact harmonic Vernier sensor based on an in-fiber Fabry–Perot Interferometer (FPI), with three reflective interfaces for the measurement of gas temperature and pressure.
Jinxiao Dan   +7 more
doaj   +1 more source

Dynamic reconfiguration in sensor middleware [PDF]

open access: yes, 2006
Middleware solutions for sensor networks have so far mainly focused on communication abstractions, ad-hoc message routing protocols, and power conservation techniques.
Danny Hughes   +9 more
core   +1 more source

Cascaded-Cavity Fabry-Perot Interferometric Gas Pressure Sensor based on Vernier Effect

open access: yesSensors, 2018
An extrinsic Fabry-Perot interferometer (EFPI) composed of double fiber FP cavities in a glass capillary tube to generate Vernier effect has been fabricated and employed for gas pressure sensing. A lead-in single-mode fiber (LSMF) and a reflective single-
Peng Chen   +4 more
doaj   +1 more source

Miniaturized fiber optic ultrasound sensor with multiplexing for photoacoustic imaging

open access: yesPhotoacoustics, 2022
A miniaturized ultrasound sensor based on optical fiber is designed and realized for multichannel parallel ultrasound detection and photoacoustic imaging.
Liuyang Yang   +5 more
doaj   +1 more source

Enabling commodity environmental sensor networks using multi-attribute combinatorial marketplaces [PDF]

open access: yes, 2013
Large scale distributed e-infrastructures are emerging as commodity resource platforms. The next generation of commodity e-infrastructures will encapsulate the physical or tangible world by integrating ubiquitous sensors.
Toohey, D.   +8 more
core   +1 more source

A Transflective Nano-Wire Grid Polarizer Based Fiber-Optic Sensor

open access: yesSensors, 2011
A transflective nano-wire grid polarizer is fabricated on a single mode fiber tip by focused ion beam machining. In contrast to conventional absorptive in-line polarizers, the wire grids reflect TE-mode, while transmitting TM-mode light so that no light ...
Yan-Qing Lu   +5 more
doaj   +1 more source

On Sliding Mode Observers for Systems with Unknown Inputs [PDF]

open access: yes, 2007
International audienceThis paper considers the problem of designing an observer for a linear system subject to unknown inputs. This problem has been extensively studied in the literature with respect to both linear and nonlinear (sliding mode) observers.
Floquet, Thierry   +8 more
core   +1 more source

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