Results 91 to 100 of about 15,020 (231)

In situ method for power re-equalization of wavelength pulses inside of OCDMA codes [PDF]

, 2011
A simple in-situ method to equalize power among individual wavelengths pulses representing two-dimensional wavelength-hopping time-spreading OCDMA code originally generated by a fibre Bragg grating-based OCDMA encoder is presented.
Glesk, Ivan, Gupta, Gyaneshwar, Idris, Siti Khadijah, Osadola, Tolulope Babajide, Sasaki, Kensuke   +4 more
core   +1 more source

Radiation tolerant fiber Bragg gratings: review of FBG sensing

Journal of Optics
Abstract Fiber Bragg Gratings (FBGs) have emerged as versatile optical sensors capable of precisely monitoring environmental parameters such as temperature and strain, making them invaluable in harsh radiation environments like space, nuclear facilities, marine systems, and high-energy physics applications. This review critically examines the
Tamana Baba, Norazlina Saidin, Nurul Fadzlin Hasbullah, Ishaq Ahmad   +3 more
openaire   +1 more source

Evaluation of prestress losses in concrete beams using destructive and non‐destructive methods

Structural Concrete, EarlyView.
Abstract Over the past few decades, prestressing techniques have become essential in the construction of key structures, infrastructure, and bridges. The serviceability and safety of prestressed concrete (PC) elements are closely tied to the effectiveness of the prestressing process.
A. N. Consiglio, G. Muciaccia, G. Rosati
wiley   +1 more source

Two-axis bend measurement with Bragg gratings in multicore optical fiber [PDF]

, 2003
We describe what is to our knowledge the first use of fiber Bragg gratings written into three separate cores of a multicore fiber for two-axis curvature measurement.
Araujo, Blanchard, Djordjevich, G. M. H. Flockhart, Gander, Gander, I. Bennion, J. D. C. Jones, J. S. Barton, Jones, L. Zhang, Liu, Patrick, Rao, Rosinski, W. N. MacPherson, Xu   +16 more
core   +2 more sources

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

Applications of polymer optical fibre grating sensors to condition monitoring of textiles [PDF]

, 2009
Fibre Bragg gratings (FBGs) in polymer optical fibres (POFs) have been used to measure the strain in a woven textile. FBGs in both POFs and silica optical fibres were attached to a woven textile specimen, and their performance characterised.
Chambers, A. R., Dulleu-Barton, J. M., Eastop, D. D., Lennard, F. J., Peng, G. D., Webb, D. J., Ye, C. C., Zhang, C., 叶陈春   +8 more
core   +3 more sources

Strain and temperature sensors using multimode optical fiber Bragg gratings and correlation signal processing [PDF]

, 2002
Multimode fiber optic Bragg grating sensors for strain and temperature measurements using correlation signal processing methods have been developed. Two multimode Bragg grating sensors were fabricated in 62/125 m graded-index silica multimode fiber ...
Jackson, PR, Jones, BE, Lim, J, Yang, QP
core   +1 more source

High‐Rate Cross‐Channel Entanglement Swapping Between Independent On‐Chip Sources

Advanced Science, Volume 13, Issue 9, 13 February 2026.
To interconnect individual chip‐based quantum sources, high‐performance entanglement swapping is indispensable. Here, using low‐loss silicon chips with waveguide structure and frequency‐offset pumps, this work demonstrates high‐rate cross‐channel entanglement swapping.
Haoyang Wang, Huihong Yuan, Qiang Zeng, Lai Zhou, Haiqiang Ma, Zhiliang Yuan   +5 more
wiley   +1 more source

Application of FBG Sensing Technology to Internal Deformation Monitoring of Landslide

Advances in Civil Engineering, 2020
Limited by geological survey methods, processes, and cost, it has long been a difficult thing to accurately detect the position of landslide slip surface and monitor the landslide internal deformation.
Haiyou Peng, Bolin Chen, Ping Dong, Si chen, Yunping Liao, Qi Guo   +5 more
doaj   +1 more source

GNOSIS: the first instrument to use fibre Bragg gratings for OH suppression

, 2013
GNOSIS is a prototype astrophotonic instrument that utilizes OH suppression fibres consisting of fibre Bragg gratings and photonic lanterns to suppress the 103 brightest atmospheric emission doublets between 1.47-1.7 microns.
Bland-Hawthorn, Joss, Bryant, Julia, Case, Scott, Colless, Matthew, Couch, Warick, Ellis, Simon C., Freeman, Kenneth, Gers, Luke, Glazebrook, Karl, Haynes, Roger, Horton, Anthony J., Lawrence, Jon S., Lee, Steve, Leon-Saval, Sergio G., Loehmannsroeben, Hans-Gerd, Miziarski, Stan, O'Byrne, John, Roth, Martin M., Schmidt, Brian, Shortridge, Keith, Tinney, Christopher G., Trinh, Christopher Q., Zheng, Jessica   +22 more
core   +1 more source