Results 71 to 80 of about 11,441 (205)
IEEE Photonics Journal, 2015 An incoherent Brillouin optical time-domain reflectometry with random state correlated Brillouin spectrum is proposed and experimentally demonstrated for the first time, which is based on a newly developed broadband random light source (chaotic laser ...
Zhe Ma +6 more
doaj +1 more source
Rigorous FEM-Simulation of EUV-Masks: Influence of Shape and Material Parameters [PDF]
, 2006 We present rigorous simulations of EUV masks with technological imperfections like side-wall angles and corner roundings. We perform an optimization of two different geometrical parameters in order to fit the numerical results to results obtained from ...
Burger, S. +6 more
core +3 more sources
Fatigue &Fracture of Engineering Materials &Structures, Volume 49, Issue 3, Page 963-978, March 2026.ABSTRACT Adhesively bonded structures often consist of parts with different or varying thicknesses, which can influence their mechanical behavior and performance. Distributed backface strain monitoring using optical fiber sensors offers a promising solution for the real‐time structural monitoring of adhesive joints.
Alessandra Panerai +3 more
wiley +1 more source
Performance of Brillouin Optical Time Domain Reflectometry with a Reference Brillouin Ring Laser
Chemical Engineering Transactions, 2015 A Brillouin optical time domain reflectometry (BOTDR) with the reference Brillouin laser for distributed measurement over long range fiber is experimentally demonstrated. A passive configuration using Mach- Zehnder interferometer is used to eliminate the
R.G. Wang, F. Zhou, L. Zhao
doaj +1 more source
Advanced Functional Materials, Volume 36, Issue 10, 2 February 2026.Two‐dimensional electronic states are the foundation of modern semiconductor technology. Here, we report molecular‐beam epitaxy growth of fractional double perovskite, EuTa2O6. Reciprocal space mapping and transmission electron microscopy confirm a layered ordering of A‐site cations.
Tobias Schwaigert +15 more
wiley +1 more source
Handheld forward-imaging needle endoscope for ophthalmic optical coherence tomography inspection [PDF]
, 2008 We report the narrowest to-date (21 gauge, 820-µm-diam) handheld forward-imaging optical coherence tomography (OCT) needle endoscope and demonstrate its feasibility for ophthalmic OCT inspection.
Han, Shuo +4 more
core +1 more source
Optical fiber ring resonator characterization by optical time-domain reflectometry
Optics Letters, 1997 A novel method for characterization of optical fiber resonators by an optical time-domain reflectometry (OTDR) technique is reported. This easy-to-use technique yields accurate results for cavity lengths ranging from a few meters to several kilometers.
A, Küng +3 more
openaire +2 more sources
Advanced Sensor Research, Volume 5, Issue 2, February 2026.Polymer optical fibers enable flexible distributed sensing but suffer from reflection noise. This study shows that angled physical contact connectors suppress Fresnel reflections, allowing polarization scrambling in Brillouin optical correlation‐domain reflectometry.
Shimbu Shirai +5 more
wiley +1 more source
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
Distributed Strain Measurement Using Power-Based Brillouin Sensor with Three Folded Dynamic Range
Proceedings, 2019 We clarify that, unlike time-domain techniques, slope-assisted Brillouin optical correlation-domain reflectometry has a trade-off relation between the strain dynamic range and the spatial resolution.
Heeyoung Lee +3 more
doaj +1 more source