Results 61 to 70 of about 20,217 (260)

Sensors for Harsh Environment: Radiation Resistant FBG Sensor System [PDF]

Journal of Lightwave Technology, 2017
This paper presents radiation resistant characteristics of fibre Bragg grating (FBG) sensors written in a photosensitive fiber and connected to a silica core radiation resistant optical fibre, aiming to develop a sensor system suitable for both sensing and data transmission in harsh environment.
Pal, A., Dhar, A., Ghosh, A., Sen, R., Hooda, B., Rastogi, V., Ams, M., Fabian, M., Sun, T., Grattan, K. T. V.   +9 more
openaire   +2 more sources

High-speed interferometric FBG interrogator with dynamic and absolute wavelength measurement capability [PDF]

, 2013
A passive, interferometric wavelength demodulation technique has been extended to measure the absolute wavelengths of a multiplexed array of fiber Bragg grating sensors. The scheme retains its original strain resolution of 10 nε/√{Hz}. A proof-of-concept
Johnston, Michael, Niewczas, Pawel, Orr, Philip, Perry, Marcus   +3 more
core   +1 more source

A Bragg Wavelength-Insensitive Fiber Bragg Grating Ultrasound Sensing System that Uses a Broadband Light and No Optical Filter

Sensors, 2011
An optical filter is incorporated in a conventional ultrasound detection system that uses a fiber Bragg grating (FBG) and broadband light source, to demodulate the FBG sensor signal.
Hiroshi Tsuda
doaj   +1 more source

Concept level evaluation of the optical voltage and current sensors and an arrayed waveguide grating for aero-electrical system applications [PDF]

, 2007
In this paper we present, for the first time, the hybrid fiber-optic voltage and current sensors interrogated using an arrayed waveguide grating (AWG) device.
Fusiek, G., McDonald, J.R., Niewczas, P.
core   +1 more source

Development and application of optical fibre strain and pressure sensors for in-flight measurements [PDF]

, 2016
Fibre optic based sensors are becoming increasingly viable as replacements for traditional flight test sensors. Here we present laboratory, wind tunnel and flight test results of fibre Bragg gratings (FBG) used to measure surface strain and an ...
Correia, Ricardo N., Garry, Kevin, Gautrey, James E., Holt, Jenny C., James, Stephen W., Lawson, Nicholas J., Partridge, Matthew, Staines, Stephen E., Tatam, Ralph P.   +8 more
core   +1 more source

An Optimized PZT-FBG Voltage/Temperature Sensor

Micromachines
The piezoelectric grating voltage sensor has garnered significant attention in the realm of intelligent sensing, attributed to its compact size, cost-effectiveness, robust electromagnetic interference (EMI) immunity, and high network integration capabilities.
Shangpeng Sun, Feiyue Ma, Yanxiao He, Bo Niu, Cheng Wang, Longcheng Dai, Zhongyang Zhao   +6 more
openaire   +3 more sources

Liquid-level Sensor Using Embedded Fiber Bragg Grating in CFRP Diaphragm [PDF]

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
This article presents the development of a liquid-level sensor using fiber optic Bragg gratings (FBG). The sensor comprises a carbon-fiber-reinforced polymers (CFRP) diaphragm packaging an embedded FBG to measure strain.
Ademir Carlos Nicolini Junior, Jessé de Pelegrin, Gustavo Gomes Kuhn, Cicero Martelli, Jean Carlos Cardozo da Silva, Uilian José Dreyer, Kleiton Morais Sousa   +6 more
doaj   +1 more source

Applications of FBG sensors on telecom satellites [PDF]

International Conference on Space Optics — ICSO 2010, 2017
Monitoring needs of spacecraft are rapidly increasing due to new and more challenging missions, along with demands to reduce launching costs by minimizing the manufacture, assembly, integration and test time and employing new low weight materials balanced by the need for maximizing system lifetime while maintaining good reliability.
Abad Valtierra, Silvia, Moita Araújo, Francisco Manuel, Ferreira, Luis Alberto, Pedersen, Flemming H., Esteban, M. A., McKenzie, Iain, Karafolas, Nikos   +6 more
openaire   +2 more sources

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

, 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., Chen, Y., Fabian, M., Grattan, K. T. V., Rente, B., Sun, T., Vorreiter, L.   +6 more
core   +1 more source

Cost effective FBG based optical sensor

2007 19th International Conference on Applied Electromagnetics and Communications, 2007
Fiber Bragg Grating (FBG) based sensors constitute majority of optical sensors for measuring physical values such as strain, temperature, or both. While properties of FBG alone are well known, interrogation techniques have not been standardized. Most sensors use expensive equipment, such as optical spectral analysers, for measuring Bragg wavelength ...
Šipuš, Zvonimir, Bosiljevac, Marko, Komljenović, Tin   +2 more
openaire   +5 more sources