Quasi-Distributed Fabry-Perot Optical Fibre Sensor for Temperature Measurements
Sign Up to like & getrecommendations! Published in 2018 at "IEEE Access"
DOI: 10.1109/access.2018.2877956
Abstract: This paper presents a simulation and an experimental quasi-distributed Fabry–Perot optical fibre sensor for temperature measurements implemented on a serial array using a combined frequency division multiplexing and wavelength division multiplexing arrangement. Quasi-distributed fibre sensors… read more here.
Keywords: distributed fabry; temperature; fibre; quasi distributed ... See more keywords
Quasi-Distributed Torque and Displacement Sensing on a Series Elastic Actuator’s Spring Using FBG Arrays Inscribed in CYTOP Fibers
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Sensors Journal"
DOI: 10.1109/jsen.2019.2898722
Abstract: We report the application of fiber Bragg grating (FBG) arrays in polymer optical fibers for the quasi-distributed displacement and torque sensing in a series elastic actuator’s spring. The arrays were inscribed in cyclic transparent optical… read more here.
Keywords: fbg arrays; elastic actuator; sensing series; spring ... See more keywords
Quasi-Distributed Directional Bending Sensor Based on Fiber Bragg Gratings Array in Triangle-Four Core Fiber
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Sensors Journal"
DOI: 10.1109/jsen.2019.2931916
Abstract: A quasi-distributed directional bending sensor based on fiber Bragg gratings (FBGs) array in triangle-four core fiber (TFCF) is proposed and experimentally demonstrated. The proposed sensor was composed of a single mode fiber (SMF) and a… read more here.
Keywords: directional bending; core; quasi distributed; sensor ... See more keywords
Heterogeneous-frequency-dual-pulse chain and weak FBG array for quasi-distributed acoustic sensing with improved response bandwidth.
Sign Up to like & getrecommendations! Published in 2021 at "Applied optics"
DOI: 10.1364/ao.432727
Abstract: By continuously injecting four groups of heterogeneous frequency dual pulses into the sensing fiber with weak fiber Bragg gratings (WFBGs), a quasi-distributed acoustic sensing method based on frequency-division multiplexing is proposed. Each group of pulses… read more here.
Keywords: frequency; frequency dual; heterogeneous frequency; quasi distributed ... See more keywords
Channel-multiplexing for quasi-distributed acoustic sensing with orthogonal codes.
Sign Up to like & getrecommendations! Published in 2021 at "Optics express"
DOI: 10.1364/oe.440269
Abstract: With the increasing demands for large-scale acoustic sensing in many important fields such as hydrophone, vehicle tracking and pipeline monitoring, optical fiber-based distributed acoustic sensing (DAS) has experienced a rapid development. In recent years, quasi-distributed… read more here.
Keywords: quasi distributed; distributed acoustic; orthogonal codes; channel multiplexing ... See more keywords
Ultrahigh scan-rate quasi-distributed acoustic sensing system using array match interrogation.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.449406
Abstract: Inspired by compressed sensing techniques, a method for significantly enhancing the maximum allowable scan rate in quasi-distributed acoustic sensing (Q-DAS) is described and studied. Matching the scan parameters to the interrogated array facilitates orders of… read more here.
Keywords: quasi distributed; scan rate; distributed acoustic; rate ... See more keywords
Real-time random grating sensor array for quasi-distributed sensing based on wavelength-to-time mapping and time-division multiplexing.
Sign Up to like & getrecommendations! Published in 2019 at "Optics letters"
DOI: 10.1364/ol.44.000379
Abstract: A real-time random grating sensor array for quasi-distributed sensing based on spectral-shaping and wavelength-to-time (SS-WTT) mapping and time-division multiplexing is proposed and experimentally demonstrated. The sensor array consists of multiple random gratings written in a… read more here.
Keywords: array; time; real time; random grating ... See more keywords
Quasi-distributed fiber-optic acoustic sensor based on a low coherence light source.
Sign Up to like & getrecommendations! Published in 2022 at "Optics letters"
DOI: 10.1364/ol.464020
Abstract: A quasi-distributed acoustic sensor using in-line weak reflectors and a low coherence light source is presented. The dynamic strain is retrieved from the phase change of the two interfering light beams reflected by the same… read more here.
Keywords: quasi distributed; light source; low coherence; acoustic sensor ... See more keywords