Results 51 to 60 of about 31,642 (200)

Characteristics of fiber-optic radiation sensor for passive scattering proton beams

Journal of Instrumentation, 2017
The aims of this study were to investigate the characteristics of a fiber-optic radiation sensor (FORS) that detects the fluorescence light produced by proton beam and to verify its effectiveness in proton therapy quality assurance (QA). Various characteristics of the FORS were investigated, such as the linearity of its relationships to the sensitive ...
J. Son, M. Kim, J. Jeong, Y. Lim, S.B. Lee, D. Shin, M. Yoon   +6 more
openaire   +1 more source

Mid-infrared refractometer based on side-polished indium fluoride fiber for monitoring relative humidity

Applied Physics Express
This work developed a fiber-optic refractometer taking advantage of the anomalous dispersion by water as an approach to monitoring relative humidity.
Kenji Goya, Shuya Noda, Gakuto Ishida, Koki Tachibana, Hiyori Uehara, Shigeki Tokita   +5 more
doaj   +1 more source

A Non-Invasive Multichannel Hybrid Fiber-Optic Sensor System for Vital Sign Monitoring

Sensors, 2017
In this article, we briefly describe the design, construction, and functional verification of a hybrid multichannel fiber-optic sensor system for basic vital sign monitoring.
Marcel Fajkus, Jan Nedoma, Radek Martinek, Vladimir Vasinek, Homer Nazeran, Petr Siska   +5 more
doaj   +1 more source

Sapphire Fiber-optic Temperature Sensor Based on Black-body Radiation Law

Procedia Engineering, 2015
AbstractThe sapphire fiber-optic temperature sensor based on Black-Body radiation law, is a new technique of high-temperature measurement in extreme environment, which combines techniques of radiometric thermometry and optical-based temperature measurement. In this paper, a system is established and tested.
Wei, Wang, Xiaotian, Shi, Ying, Wang
openaire   +1 more source

Efficient fiber Bragg grating and fiber Fabry-Pe'rot sensor multiplexing scheme using a broadband pulsed mode-locked laser [PDF]

, 2005
A pulsed broadband mode-locked laser (MLL) combined with interferometric interrogation is shown to yield an efficient means of multiplexing a large number of fiber Bragg grating (FBG) or fiber Fabry-Perot (FFP) strain sensors with high performance ...
Cranch, G A, Flockhart, G M H, Kirkendall, C K   +2 more
core   +1 more source

A Novel Low-Power-Consumption All-Fiber-Optic Anemometer with Simple System Design

Sensors, 2017
A compact and low-power consuming fiber-optic anemometer based on single-walled carbon nanotubes (SWCNTs) coated tilted fiber Bragg grating (TFBG) is presented. TFBG as a near infrared in-fiber sensing element is able to excite a number of cladding modes
Yang Zhang, Fang Wang, Zhihui Duan, Zexu Liu, Zigeng Liu, Zhenlin Wu, Yiying Gu, Changsen Sun, Wei Peng   +8 more
doaj   +1 more source

Fibre laser hydrophones for cosmic ray particle detection

, 2013
The detection of ultra high energetic cosmic neutrinos provides a unique means to search for extragalactic sources that accelerate particles to extreme energies.
Buis, E. J., Doppenberg, E. J. J., Nieuwland, R. A., Toet, P. M.   +3 more
core   +1 more source

Fluorescent optical fibre chemosensor for the detection of mercury [PDF]

, 2016
This work aims to develop a stable, compact and portable fibre optic sensing system which is capable of real time detection of the mercury ion (II), Hg2+.
Grattan, K. T. V., Nguyen, T.H., Sun, T., Wren, S.   +3 more
core   +1 more source

Polarization properties of interferometrically interrogated fiber Bragg grating and tandem-interferometer strain sensors [PDF]

, 2006
Lead sensitivity in low-coherence interferometric fiber-optic sensors is a well-known problem. It can lead to a severe degradation in the sensor resolution and accuracy through its effect on the fringe visibility and interferometric phase.
Cranch, G A, Flockhart, G M H, Kirkendall, C K   +2 more
core   +1 more source

Approaches to the creation of optical temperature sensors based on Bragg structures for biomedical research

Технічна інженерія
The proposed structural implementation of an optoelectronic device for determining tissue microcirculation and body temperature allows miniaturizing a fiber sensor, providing monitoring, diagnostics and screening of the state of tissue microcirculation ...
Waldemar Wójcik, Tatiana Martyniuk, Tatiana Nikitchuk, Bakhyt Yeraliyeva, Dmytro Shtofel, Yang Longyin   +5 more
doaj   +1 more source