Results 51 to 60 of about 123 (115)

THEORETICAL ANALYSIS OF SINGLE-FIBER TRANSMISSION OVER WDM-PON SYSTEMS

, 2018
In this paper, a rigorous theoretical analysis on optical beat interferometric (OBI) noises caused by the Rayleigh backscattering (RB) and Fresnel reflection (FR) effects on the performance of a single-fiber single-wavelength WDM-PON (wavelength division
Puspa Devi Pukhrambam, Joni Welman Simatupang   +1 more
core   +1 more source

Garnet Reference Materials for In Situ Lu‐Hf Geochronology

Geostandards and Geoanalytical Research, Volume 48, Issue 4, Page 887-908, December 2024.
Key Points First well‐characterised garnet reference materials for in situ Lu‐Hf geochronology via LA‐ICP‐MS/MS. The GWA reference materials yield robust and precise Lu‐Hf isochron ages. The ICP‐MS/MS sensitivity in gas‐mode increases substantially after flushing the reaction cell with NH3/He at a high flow rate (> 2 h prior to commencing analysis). In
Bruno V. Ribeiro, Christopher L. Kirkland, Matthijs Smit, Kira Musiyachenko, Fawna J. Korhonen, Noreen J. Evans, Kai Rankenburg, Bradley J. McDonald, Stijn Glorie, Sarah E. Gilbert, Karsten Goemann, Ivan Belousov, Jeffrey Oalmann, Chris Clark, Sean Makin   +14 more
wiley   +1 more source

Petrography, Crystallography, and Geochronology of Baddeleyite With Two Morphologies in a Chang'e‐5 Lunar Basalt

Journal of Geophysical Research: Planets, Volume 129, Issue 11, November 2024.
Abstract Baddeleyite (ZrO2) is widespread in lunar basalts and frequently used for U‐Pb geochronology of magmatic and impact events. The formation of baddeleyite involves two primary mechanisms: (a) crystallization from late‐stage magma, and (b) decomposition of zircon under high‐temperature (high‐T) conditions.
Liying Huang, Yuchen Xu, Lang Qin, Yang Liu, Lixin Gu, Heng‐Ci Tian, Jialong Hao, Feng Zhang, Wei Du, Jing Yang, Hejiu Hui, Wei Yang, Yangting Lin, Yongliao Zou   +13 more
wiley   +1 more source

Bias‐Eliminating Techniques in the Computation of Power Spectra for Characterizing Gravity Waves: Interleaved Methods and Error Analyses

Earth and Space Science, Volume 11, Issue 10, October 2024.
Abstract Observational data inherently contain noise which manifests as uncertainties in the measured parameters and creates positive biases or noise floors in second‐order products like variances, fluxes, and spectra. Historical methods estimate and subsequently subtract noise floors, but struggle with accuracy.
Jackson Jandreau, Xinzhao Chu
wiley   +1 more source

Monitoring Water Level of a Surficial Aquifer Using Distributed Acoustic Sensing and Ballistic Surface Waves

Water Resources Research, Volume 60, Issue 8, August 2024.
Abstract Groundwater resources play an increasingly crucial role in providing the water required to sustain the environment. However, our understanding of the state of surficial aquifers and their spatiotemporal dynamics remains poor. In this study, we demonstrate how Rayleigh wave velocity variation can be used as a direct indicator of changes in the ...
Valeriia Sobolevskaia, Jonathan Ajo‐Franklin, Feng Cheng, Shan Dou, Nathaniel J. Lindsey, Anna Wagner   +5 more
wiley   +1 more source

Remote Sensing of Seawater Temperature and Salinity Profiles by the Brillouin Lidar Based on a Fizeau Interferometer and Multichannel Photomultiplier Tube. [PDF]

Sensors (Basel), 2022
Wang Y, Xu Y, Chen P, Liang K.
europepmc   +1 more source

Ultrafast Laser Processing of Optical Fibers for Sensing Applications. [PDF]

Sensors (Basel), 2021
Mihailov SJ, Hnatovsky C, Abdukerim N, Walker RB, Lu P, Xu Y, Bao X, Ding H, De Silva M, Coulas D, Grobnic D.   +10 more
europepmc   +1 more source

Low-Cost Turbidity Sensor to Determine Eutrophication in Water Bodies. [PDF]

Sensors (Basel), 2023
Rocher J, Jimenez JM, Tomas J, Lloret J.
europepmc   +1 more source

An all-optical gain-controlled amplifier for bidirectional transmission

, 2006
A novel all-optical gain-controlled (AOGQ bidirectional amplifier is proposed and demonstrated in a compact structure. The AOGC function using fiber Bragg grating (FBG) pairs controls both directional signals independently, and combinations of optical ...
Won, YH, Choi, BH, Kim, CB, Hong, KJ
core  

A two-way 224-Gbit/s PAM4-based fibre-FSO converged system. [PDF]

Sci Rep, 2022
Lu HH, Li CY, Tsai WS, Chang PS, Lin YY, Chen YT, Liu CX, Ko T.   +7 more
europepmc   +1 more source