Detection of solvents using a distributed fibre optic sensor [PDF]
, 2003 A fibre optic sensor that is capable of distributed detection of liquid solvents is presented. Sensor interrogation using optical time domain reflectometry (OTDR) provides the capability of locating solvent spills to a precision of ±2 m over a total ...
A. MacLean +8 more
core +1 more source
A Photon-Counting Optical Time-Domain Reflectometry Based Optical Fiber Temperature Sensor System
IEEE Photonics Journal, 2022 A photon-counting optical time-domain reflectometry (PC-OTDR) based optical fiber temperature sensor system is proposed and demonstrated experimentally in this work. In the system, a high speed photon-counting module is developed for fast measurement and
Shijie Deng +8 more
doaj +1 more source
Inspection of defect-induced mode coupling in hollow-core photonic bandgap fibers using time-of-flight [PDF]
, 2015 We analyze defect-induced mode coupling in a hollow-core photonic bandgap fiber using time-of-flight, and show its utility in complementing optical time-domain ...
Alam, S.U. +11 more
core +1 more source
IET Science, Measurement & Technology, 2021 This paper presents a long‐range distributed fibre‐optic temperature sensor with high sensing accuracy to monitor temperature using Brillouin scattering mechanism.
Himansu Shekhar Pradhan
doaj +1 more source
Measurement of antennas and microwave components using time-domain reflectometry of a voltage impulse [PDF]
, 2011 Band-pass microwave systems such as ultra-wideband antennas are traditionally characterized in the frequency-domain through a vector network analyzer in an anechoic chamber.
McCabe, Steven Owen, Scott, Jonathan B.
core +2 more sources
Towards single-photon Brillouin optical time domain reflectometry
Optics Express, 2023 We investigate a novel distributed Brillouin optical time domain reflectometer (BOTDR) using standard telecommunication fibers based on single-photon avalanche diodes (SPADs) in gated mode, ν −BOTDR, with a range of 120 km and 10 m spatial resolution.
Maxime Romanet +5 more
openaire +2 more sources
Application of fiber optic sensors for vibration and ignition monitoring of a belt conveyor system [PDF]
, 2019 The belt conveyor serves as the main coal transport equipment in a coal mine and its safe operation is the lifeline of safety in coal mine production.
Grattan, K. T. V. +7 more
core +1 more source
Rapid characterization of the ultraviolet induced fiber Bragg grating complex coupling coefficient as a function of irradiance and exposure time [PDF]
, 2007 We report the application of optical frequency domain reflectometry and a discrete-layer-peeling inverse scattering algorithm to the spatial characterization of the UV induced complex coupling coefficient during fiber Bragg grating growth.
Cranch, Geoffrey A. +2 more
core +1 more source
The Role of Probe Attenuation in the Time-Domain Reflectometry Characterization of Dielectrics [PDF]
, 2010 The influence of the measurement setup on the estimation of dielectric permittivity spectra from time-domain reflectometry (TDR) responses is investigated.
Ferraris, S. +2 more
core +1 more source
Chirped-pulse phase-sensitive optical time-domain reflectometry [PDF]
Asia Communications and Photonics Conference 2016, 2016 We review our recent work on chirped-pulse phase-sensitive optical time-domain reflectometry along optical fibers and its application in the measurement of true nanostrain variations in the kHz frequency range over lengths up to 20 km.
Miguel Gonzalez Herraez +6 more
openaire +3 more sources