Results 131 to 140 of about 9,072 (243)

Properties of complexly periodic inhomogeneous systems in radio and optical guiding structures

Физика волновых процессов и радиотехнические системы, 2015
We have considered a questions associated with the analysis of the spectral characteristics of fiber Bragg gratings and periodic radio frequency in coaxial cable systems with uniform periodic structure containing a discrete phase shift.
O.G. Morozov, A.R. Nasybullin
doaj  

A Dual‐Frequency Sensitivity Model for Optical Fibre Ultrasonic Sensors in Power Transformer Partial Discharge Detection

High Voltage, EarlyView.
ABSTRACT The detection of partial discharges (PD) on the power transformer tank demands higher sensitivity in ultrasonic detection. To target the detection frequency band for sensor optimisation and enhance sensitivity, this paper presents a dual‐frequency sensitivity model for optical fibre ultrasonic sensors.
Sihan Wang, Jihang Sun, Jialin Wang, Bin Wei, Guoming Ma   +4 more
wiley   +1 more source

Liquid crystal based tunable WDM planar Bragg grating devices based on precision sawn groove substrates [PDF]

, 2009
Current optical telecommunication systems employ dense Wavelength Division Multiplexing (WDM) techniques to increase the data carrying capacity of fiber networks.
Adikan, F.R.M., Gates, J.C., P. G. R. Smith, Smith, P. G. R., F. R. M. Adikan, B. D. Snow, H. E. Major, D. O. Kundys, J. C. Gates, Snow, B. D., Dyadyusha, A., C. B. E. Gawith, Kundys, D.O., A. Dyadyusha, Gates, J. C., Kaczmarek, M., Gawith, C.B.E., M. Kaczmarek, Major, H.E., Kundys, D. O., Smith, P.G.R., Adikan, F. R. M., Snow, B.D., Major, H. E., Gawith, C. B. E.   +24 more
core   +1 more source

The Fiery Eyes of a Maenad: Origin Determination of Faceted Garnet Eye Inlays in a Roman Bronze Bust From Southern Tyrol

Archaeometry, EarlyView.
ABSTRACT In 1837, the Tyrolean State Museum Ferdinandeum in Innsbruck, Austria, purchased a Roman bronze statue of a maenad from the 2nd century ce with red garnets as facetted eye inlays found near Brixen, Southern Tyrol. These garnets were investigated using optical microscopy, a portable hand‐held and a stationary micro‐X‐ray fluorescence device, as
H. Albert Gilg, Simon Wagner, Anton Höck, Peter Tropper   +3 more
wiley   +1 more source

Fibre Bragg gratings for dispersion compensation in optical communications [PDF]

, 1997
The main activities and recent developments towards the implementation of meter-long, high-performance fibre grating dispersion compensators in the Optoelectronics Research Centre, Southampton University are reviewed.
Laming, R.I., Ibsen, M., Ennser, K., Cole, M.J., Durkin, M., Zervas, M.N.   +5 more
core  

High‐Performance Near‐Infrared Organic Light‐Emitting Diodes Based on Grating‐Structured Hole Transport Layer

Small Structures, Volume 7, Issue 8, August 2026.
High‐performance near‐infrared (NIR) organic light‐emitting diodes (OLEDs) were achieved by incorporating a one‐dimensional Bragg grating into a thermally cross‐linkable hole‐transporting layer via microtransfer molding. The optimized devices exhibit an emission peak at 880 nm, a maximum external quantum efficiency of 1.55%, and a peak radiant exitance
Yuhang Xu, Wanyuan Deng, Zhiyuan Cong, Weiping Wang, Chao Gao, Hongbin Wu   +5 more
wiley   +1 more source

Recent Advances in Fiber Bragg Grating Sensing

Sensors
In the vast realm of optical fiber sensing, where precision and innovation converge, Fiber Bragg Gratings (FBGs) stand as luminaries, casting their influence across myriad applications [...]
Antreas Theodosiou
doaj   +1 more source

Optical Phased Arrays on Photonic Integrated Circuit Platforms: Challenges, Opportunities, and Future Applications

Nanophotonics, Volume 15, Issue 14, 27 July 2026.
Integrated optical phased arrays are emerging as scalable engines for solid‐state beam steering and programmable wavefront control. This Review maps the field from beam‐steering principles and core building blocks to material platforms, system‐level bottlenecks, and application frontiers, highlighting how heterogeneous integration, aperiodic ...
Jingwei Li, Yuyuan Han, Aoxiang Chen, Pengpeng Li, Xinglin Zhu, Guanbao Zhao, Luohan Peng, Huaibin Zheng   +7 more
wiley   +1 more source

Embedding Fiber Segment Interferometry for Localization of Defects in Composite Structures

Polymer Composites, Volume 47, Issue 14, Page 12874-12886, 20 July 2026.
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, Christoph Hemeling, Thomas Kissinger, Florian Puch   +3 more
wiley   +1 more source

Equalisation of spectral non-uniformities in broad-band chirped fibre gratings [PDF]

, 1997
The authors present a novel application of apodisation to equalise the spectral non-uniformities caused by cladding-mode losses in broad-band chirped fibre Bragg ...
Laming, R.I., Ibsen, M., Gusmeroli, V., Durkin, M.   +3 more
core