Results 31 to 40 of about 1,583 (160)
Newest Methods and Approaches to Enhance the Performance of Optical Frequency-Domain Reflectometers
SensorsIn this review, we summarize the latest advances in the design of optical frequency-domain reflectometers (OFDRs), digital signal processing, and sensors based on special optical fibers.
Ivan A. Lobach +9 more
doaj +1 more source
Applied Sciences, 2021 This work is devoted to the study of the pyroelectric effect on the properties of optical waveguides formed in a lithium niobate crystal by proton exchange.
Roman Ponomarev +4 more
doaj +1 more source
Bandwidth-division in digitally enhanced optical frequency domain reflectometry
Optics Express, 2013 We demonstrate for the first time the use of digital range-gating in OFDR to allow for orders of magnitude reduction in the required sampling rates. This allows for sensing over long lengths of fiber with fast sweeps of the optical source frequency, without requiring impractical sampling rates.
Riesen, N., Lam, T.T.-Y., Chow, J.H.
openaire +3 more sources
Status and analysis of multi-factor intelligent perception of hidden disaster in mines based on DOFS
Meitan kexue jishuCoal is the “ballast stone” for China’s energy security, but hidden disaster-causing factors and the “three highs and one low” problems in deep underground environments pose threats to the safe, efficient and green mining of coal mines.
Weipeng SHI +3 more
doaj +1 more source
A Novel Method for Characterization of Distributed Bragg Reflectors in Photonic Integrated Circuits
IEEE Photonics Journal, 2018 We present a novel and accurate method for characterizing the reflection spectra of distributed Bragg reflectors using optical frequency domain reflectometry.
Dan Zhao +3 more
doaj +1 more source
Macromolecular Rapid Communications, EarlyView.This study presents a microscope‐based photothermal platform that integrates structured laser light projection with machine‐learning‐optimized illumination. By employing neural‐network models to predict and generate thermal profiles, the platform achieves precise thermal processing of block copolymer films.
Filip Franciszek Powala +3 more
wiley +1 more source
Doppler optical frequency domain reflectometry for remote fiber sensing: erratum
Optics Express, 2021 This erratum corrects a typographical error in Eq. (10) of our paper [ Opt. Express 29 , 14615 ( 2021 ) 10.1364/OE.421842
Max Koeppel +7 more
openaire +2 more sources
Embedding Fiber Segment Interferometry for Localization of Defects in Composite Structures
Polymer Composites, EarlyView.Graphical representation of composite structures with embedded fiber optic sensors for structural health monitoring, enabling strain measurement and damage localization under mechanical loading. ABSTRACT In the area of structural health monitoring (SHM), embedding strain sensors into smart composites is a key strategy for detecting failures arising ...
Shiva Mohammadkarimi +3 more
wiley +1 more source
Nonthermal plasma approaches for combating implant‐associated infections: A compendious review
VIEW, EarlyView.Implant‐associated infections pose serious clinical challenges. Non‐thermal plasma (NTP) modifications overcome this bottleneck in distinct ways relative to traditional sterilization methods. Gas‐phase plasmas generate highly energetic species, UV radiation and reactive oxygen/nitrogen species (RONS), which alter the implant surface properties.
A. M. Trimukhe +8 more
wiley +1 more source
63 km BOFDA for Temperature and Strain Monitoring
Sensors, 2018 We demonstrate (and are the first to do so) 63 km Brillouin Optical Frequency-Domain Analysis (BOFDA) for temperature and strain monitoring using a 100 km fiber loop.
Thomas Kapa +2 more
doaj +1 more source