Results 71 to 80 of about 1,664 (168)

Saturation Effects in Narrowband Resonance Lidar Measurements, Part 2: Potassium Lidar Systems and Experimental Results

Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract Resonance lidars targeting the D1 ${D}_{1}$ resonance line of potassium at 770 nm have been employed over the past 5 decades to yield numerous insights into the dynamics of the middle and upper atmosphere. It has long been recognized that these measurements can be severely affected by nonlinear behavior in the scattering process, that is ...
C. Geach, B. Kaifler, Josef Höffner, G. Baumgarten   +3 more
wiley   +1 more source

Dead Zone Fault Detection Optimization Method for Few-Mode Fiber Links Based on Unexcited Coupled Higher-Order Modes

Photonics
The traditional single-mode fiber (SMF) optical time domain reflectometer (OTDR) may not be able to accurately detect and locate fault events in the dead zone of few-mode fiber (FMF) links.
Feng Liu, Tianle Gu, Zicheng Huang
doaj   +1 more source

Wavelength Reuse for Short-Reach Optical Access Network Utilizing MDM

IEEE Photonics Journal, 2017
Wavelength reuse has been proposed as an effective solution to realize colorless optical network units (ONUs) for next-generation passive optical network with simplified maintenance and reduced cost.
Yuanxiang Chen, Juhao Li, Jinglong Zhu, Paikun Zhu, Yu Tian, Huangfa Peng, Yongchi Xu, Jingbiao Chen, Yongqi He, Zhangyuan Chen   +9 more
doaj   +1 more source

Ductile Extrusion Triggered by Continental Collision in NE Brazil

Terra Nova, Volume 38, Issue 4, Page 266-277, August 2026.
ABSTRACT The Borborema Province in northeastern Brazil hosts one of the world's largest strike‐slip shear zone networks, active during the late Neoproterozoic assembly of West Gondwana. Whether these shear zones initiated during active continental collision or as a post‐orogenic response to far‐field stresses remains debated.
L. R. Tesser, C. E. Ganade, C. R. Cioffi, J. B. Forshaw, M. Hueck, E. Celis, M. A. S. Basei   +6 more
wiley   +1 more source

Rayleigh backscattering: a method to highly compress laser linewidth

Chinese Science Bulletin, 2014
Ultra-narrow linewidth laser with several hundred hertz at room temperature has attracted a great deal of attention in recent years and played a critical role in both optical sensing and communication fields. In this paper, a new method based on Rayleigh backscattering to highly compress the laser linewidth was proposed and demonstrated theoretically ...
Tao Zhu, Shihong Huang, Leilei Shi, Wei Huang, Min Liu, Kinseng Chiang   +5 more
openaire   +1 more source

Distributed Partial Discharge Locating and Detecting Scheme Based on Optical Fiber Rayleigh Backscattering Light Interference. [PDF]

Sensors (Basel), 2023
Zhou Z, Liu H, Zhang D, Han Y, Yang X, Zheng X, Qu J.   +6 more
europepmc   +1 more source

Advancing Measurement Capabilities in Lithium-Ion Batteries: Exploring the Potential of Fiber Optic Sensors for Thermal Monitoring of Battery Cells

Batteries
This work demonstrates the potential of fiber optic sensors for measuring thermal effects in lithium-ion batteries, using a fiber optic measurement method of Optical Frequency Domain Reflectometry (OFDR).
Florian Krause, Felix Schweizer, Alexandra Burger, Franziska Ludewig, Marcus Knips, Katharina Quade, Andreas Würsig, Dirk Uwe Sauer   +7 more
doaj   +1 more source

Parameter optimization for Rayleigh–Mie lidar under different dust conditions for the landing area of Martian Tianwen-1

Earth and Planetary Physics
Mars is the terrestrial planet in the solar system that is closest to the Earth. Studying the atmospheric parameters of Mars and studying the evolutionary history of the Martian environment on this basis is helpful for people to discover signs of ...
KeXin Ming, Chong Wang, XiangHui Xue, JianFei Wu, TingDi Chen   +4 more
doaj   +1 more source

Temperature lidar measurements from 1 to 105 km altitude using resonance, Rayleigh, and Rotational Raman scattering [PDF]

Atmospheric Chemistry and Physics, 2004
For the first time, three different temperature lidar methods are combined to obtain time-resolved complete temperature profiles with high altitude resolution over an altitude range from the planetary boundary layer up to the lower thermosphere (about 1 ...
M. Alpers, M. Alpers, R. Eixmann, C. Fricke-Begemann, M. Gerding, J. Höffner   +5 more
doaj  

Single-Frequency Ring Fiber Laser with Random Distributed Feedback Provided by Artificial Rayleigh Scattering

Photonics
Femtosecond (fs) laser inscription technology allows for the production of in-fiber disordered structures with an enhanced level of Rayleigh backscattering with relatively few induced losses. These properties enable the application of these structures as
Mikhail I. Skvortsov, Kseniya V. Proskurina, Evgeniy V. Golikov, Alexander V. Dostovalov, Alexey A. Wolf, Zhibzema E. Munkueva, Sofia R. Abdullina, Vadim S. Terentyev, Olga N. Egorova, Sergey L. Semjonov, Sergey A. Babin   +10 more
doaj   +1 more source