Results 31 to 40 of about 3,087,643 (281)

Report of High Temperature Measurements with a Fabry-Perot Extensometer [PDF]

open access: yesEPJ Web of Conferences, 2020
Fabry-Perot (FP) sensors like other Fiber Optic (FO) sensors may be of particular interest for in pile experiments in MTR with little room available thanks to their compact size.
Cheymol G.   +4 more
doaj   +1 more source

Fabrication and Characterization of a Fiber-optic Radiation Sensor for Detection of Tritium [PDF]

open access: yesKorean Journal of Optics and Photonics, 2009
: Ce, and CsI : Tl to select the most effective sensor tip. In addition, we have measured the scintillating lights using a photomultiplier tube as a function of distance between sensor tips to the source with the different activities of hydride tritium. The final results are compared with those which are obtained using a surface activity monitor.
Kyoung-Won Jang   +7 more
openaire   +1 more source

Development of a 2-Channel Embedded Infrared Fiber-Optic Temperature Sensor Using Silver Halide Optical Fibers

open access: yesSensors, 2011
A 2-channel embedded infrared fiber-optic temperature sensor was fabricated using two identical silver halide optical fibers for accurate thermometry without complicated calibration processes.
Bongsoo Lee   +7 more
doaj   +1 more source

STUDY OF THE EFFECT OF ENDFACES POLISHING ANGLE FOR ANISOTROPIC WAVEGUIDES ON STATE CONVERSION OF LIGHT POLARIZATION [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2016
The paper deals with optical scheme for research of polarization state transformation at the junction of anisotropic waveguides. It consists of a light source, polarization controller, multifunctional integrated optical scheme (MIOS), single-mode fiber ...
V. A. Shulepov   +2 more
doaj   +1 more source

Noninvasive Fetal Heart Rate Monitoring: Validation of Phonocardiography-Based Fiber-Optic Sensing and Adaptive Filtering Using the NLMS Algorithm

open access: yesAdvances in Electrical and Electronic Engineering, 2017
Here we present the evaluation results of our novel noninvasive phonocardiographic-based fiber-optic sensor for fetal Heart Rate (fHR) detection using adaptive filtering and the NLMS Algorithm.
Jan Nedoma   +8 more
doaj   +1 more source

CENTRAL WAVELENGTH ADJUSTMENT OF LIGHT EMITTING SOURCE IN INTERFEROMETRIC SENSORS BASED ON FIBER-OPTIC BRAGG GRATINGS [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2015
The paper is focused on the investigation of fiber-optic interferometric sensor based on the array of fiber Bragg gratings. Reflection spectra displacement mechanism of the fiber Bragg gratings under the external temperature effects and the static ...
A. S. Aleynik   +4 more
doaj   +1 more source

A fibre optic sensor for the measurement of surface roughness and displacement using artificial neural networks [PDF]

open access: yes, 1997
This paper presents a fiber optic sensor system, artificial neural networks (fast back-propagation) are employed for the data processing. The use of the neural networks makes it possible for the sensor to be used both for surface roughness and ...
Butler, C, Lu, Y, Zhang, K, Yang, QP
core   +1 more source

Review Of High Bandwidth Fiber Optics Radiation Sensors [PDF]

open access: yesSPIE Proceedings, 1986
Fiber optics are being effectively utilized in an increasing range of data and information transfer applications. A less mature, but equally challenging, application of fiber optics concerns their use for a host of sensor technologies. Fiber sensors have now been developed for measurement of many physical parameters.
openaire   +1 more source

Optical Gas Sensor Fabrication Based on Porphyrin-Anchored Electrostatic Self-Assembly onto Tapered Optical Fibers [PDF]

open access: yes, 2012
Tapered optical fibers with nano-assembled coatings of thicknesses of order tens of nanometres were used for the detection of ammonia gas. The film coating was composed of alternate layers of tetrakis-(4-sulfophenyl) porphine (TSPP) and poly(allylamine ...
Lee, Seung-Woo   +5 more
core   +1 more source

Ionizing Radiation Detectors Based on Ge-Doped Optical Fibers Inserted in Resonant Cavities

open access: yesSensors, 2015
The measurement of ionizing radiation (IR) is a crucial issue in different areas of interest, from environmental safety and industrial monitoring to aerospace and medicine.
Saverio Avino   +7 more
doaj   +1 more source

Home - About - Disclaimer - Privacy